acer-10q_20200630.htm

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☑ Yes ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☑

As of August 6, 2020, there were 11,912,731 shares of the issuer’s Common Stock outstanding.

	June 30,			December 31,
	2020			2019
Assets
Current assets:
Cash and cash equivalents	$	5,880,861		$	12,077,640
Prepaid expenses and other current assets		475,005			807,356
Total current assets		6,355,866			12,884,996
Property and equipment, net		158,555			193,974
Other assets:
Goodwill		7,647,267			7,647,267
In-process research and development		118,600			118,600
Other non-current assets		510,941			620,674
Total assets	$	14,791,229		$	21,465,511
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	434,466		$	561,090
Accrued expenses		2,082,981			1,944,431
Other current liabilities		530,054			263,392
Total current liabilities		3,047,501			2,768,913
Other non-current liabilities		525,357			326,282
Total liabilities		3,572,858			3,095,195
Commitments and Contingencies (Note 6)
Stockholders’ equity:
Preferred stock, $0.0001 par value; authorized 10,000,000 shares; none issued and outstanding		—			—
Common stock, $0.0001 par value; authorized 150,000,000 shares; 10,612,731 and 10,095,176 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively		1,062			1,010
Additional paid-in capital		98,187,329			94,619,818
Accumulated deficit		(86,970,020	)		(76,250,512	)
Total stockholders’ equity		11,218,371			18,370,316
Total liabilities and stockholders’ equity	$	14,791,229		$	21,465,511

The accompanying notes are an integral part of these unaudited condensed financial statements.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Operating expenses:
Research and development	$	2,816,749		$	4,246,244		$	5,601,688		$	8,192,464
General and administrative		2,953,137			6,919,476			5,139,653			11,150,174
Total operating expenses		5,769,886			11,165,720			10,741,341			19,342,638
Loss from operations		(5,769,886	)		(11,165,720	)		(10,741,341	)		(19,342,638	)
Other (expense) income, net:
Interest and other (expense) income, net		(2,317	)		143,884			21,801			329,027
Foreign currency transaction gain (loss)		1,402			(19,671	)		33			3,399
Total other (expense) income, net		(915	)		124,213			21,834			332,426
Net loss	$	(5,770,801	)	$	(11,041,507	)	$	(10,719,507	)	$	(19,010,212	)
Net loss per share - basic and diluted	$	(0.56	)	$	(1.09	)	$	(1.05	)	$	(1.88	)
Weighted average common shares outstanding - basic and diluted		10,365,767			10,090,883			10,231,437			10,089,133

The accompanying notes are an integral part of these unaudited condensed financial statements.

	Three and Six Months Ended June 30, 2020
	Common Stock				Additional Paid-in Capital		Accumulated Deficit			Total Stockholders’ Equity
	Shares		Amount
Balance, December 31, 2019		10,095,176	$	1,010	$	94,619,818	$	(76,250,512	)	$	18,370,316
Issuance of common stock in connection with restricted stock unit vesting		5,858		1		—		—			1
Stock-based compensation		—		—		667,338		—			667,338
Net loss		—		—		—		(4,948,707	)		(4,948,707	)
Balance March 31, 2020		10,101,034		1,011		95,287,156		(81,199,219	)		14,088,948
Issuance of common stock through at-the-market facility, net of issuance costs		363,549	$	36		1,941,059		—			1,941,095
Issuance of common stock for commitment fee		148,148	$	15		355,540		—			355,555
Stock-based compensation		—		—		603,574		—			603,574
Net loss		—		—		—		(5,770,801	)		(5,770,801	)
Balance June 30, 2020		10,612,731	$	1,062	$	98,187,329	$	(86,970,020	)	$	11,218,371

	Three and Six Months Ended June 30, 2019
	Common stock				Additional Paid-in Capital		Accumulated Deficit			Total Stockholders’ Equity
	Shares		Amount
Balance, December 31, 2018		10,087,363	$	1,009	$	91,914,692	$	(46,832,543	)	$	45,083,158
Stock-based compensation		—		—		671,927		—			671,927
Net loss		—		—		—		(7,968,705	)		(7,968,705	)
Balance, March 31, 2019		10,087,363		1,009		92,586,619		(54,801,248	)		37,786,380
Stock-based compensation		—		—		715,366		—			715,366
Issuance of stock in connection with stock option exercises		7,813		1		92,271		—			92,272
Net loss		—		—		—		(11,041,507	)		(11,041,507	)
Balance, June 30, 2019		10,095,176	$	1,010	$	93,394,256	$	(65,842,755	)	$	27,552,511

The accompanying notes are an integral part of these unaudited condensed financial statements.

	Six Months Ended June 30,
	2020			2019
Cash flows from operating activities:
Net loss	$	(10,719,507	)	$	(19,010,212	)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation		1,270,912			1,387,293
Depreciation		35,419			27,075
Fair value of shares issued for commitment fee		355,555
Loss on disposal of property and equipment		—			52,718
Non-cash interest expense		917			—
Changes in operating assets and liabilities
Prepaid expenses and other current assets		332,352			282,791
Accounts payable		(126,624	)		505,003
Accrued expenses		150,623			(1,374,449	)
Other non-current assets		—			(10,620	)
Net cash used in operating activities		(8,700,353	)		(18,140,401	)
Cash flows from investing activities:
Purchase of property and equipment		—			(134,960	)
Net cash used in investing activities		—			(134,960	)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs		1,941,095			—
Proceeds from Paycheck Protection Program loan		562,479			—
Proceeds from the exercise of stock options		—			92,272
Net cash provided by financing activities		2,503,574			92,272
Net decrease in cash and cash equivalents		(6,196,779	)		(18,183,089	)
Cash and cash equivalents, beginning of period		12,077,640			41,671,284
Cash and cash equivalents, end of period	$	5,880,861		$	23,488,195

The accompanying notes are an integral part of these unaudited condensed financial statements.

Acer Therapeutics Inc., a Delaware corporation (the “Company”), is a pharmaceutical company focused on the acquisition, development, and commercialization of therapies for serious rare and life-threatening diseases with significant unmet medical needs. The Company’s pipeline includes four clinical-stage candidates: emetine hydrochloride (“emetine”) for the treatment of patients with COVID-19; ACER-001 (a taste-masked, immediate release formulation of sodium phenylbutyrate) for the treatment of various inborn errors of metabolism, including urea cycle disorders (“UCD”) and Maple Syrup Urine Disease (“MSUD”); EDSIVO™ (celiprolol) for the treatment of vascular Ehlers-Danlos syndrome (“vEDS”) in patients with a confirmed type III collagen (COL3A1) mutation; and osanetant for the treatment of induced vasomotor symptoms (“iVMS”). The Company’s product candidates are believed to present a comparatively de-risked profile, having one or more of a favorable safety profile, clinical proof-of-concept data, mechanistic differentiation, and/or accelerated paths for development through specific programs and procedures established by the United States (“U.S.”) Food and Drug Administration (“FDA”).

Since its inception, the Company has devoted substantially all of its efforts to business planning, research and development, recruiting management and technical staff, acquiring operating assets, and raising capital. The Company has not generated any product revenue to date and may never generate any product revenue in the future.

The Company had an accumulated deficit of $87.0 million and cash and cash equivalents of $5.9 million as of June 30, 2020. Net cash used in operating activities was $8.7 million and $18.1 million for the six months ended June 30, 2020 and 2019, respectively.

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, an amended and restated sales agreement was entered into with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50 million depending upon market demand, in transactions deemed to be an at-the-market (“ATM”) offering. Any such sales would be effected pursuant to the Company’s registration statement on Form S-3 (File No. 333-228319), declared effective by the SEC on November 21, 2018. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. As of June 30, 2020, the Company had sold an aggregate of 363,549 shares of common stock at a gross sale price of $5.6177 per share, for gross proceeds of $2.0 million. Proceeds, net of $0.1 million of fees and offering costs, were $1.9 million. Subsequent to June 30, 2020, during multiple trading days through August 6, 2020, the Company sold an additional aggregate of 1,055,002 shares of common stock at an average gross sales price of $3.8007 per share, resulting in gross proceeds of $4.0 million. Proceeds, net of fees of $0.1 million, were $3.9 million.

On April 30, 2020, the Company entered into a purchase agreement and registration rights agreement pursuant to which Lincoln Park Capital Fund, LLC (“Lincoln Park”) has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock. Such sales of common stock by the Company, if any, will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement. The Company issued 148,148 shares of common stock to Lincoln Park as a commitment fee in connection with entering into the purchase agreement. The $0.4 million fair value of the commitment fee shares was recorded to General and administrative expense along with other costs incurred in connection with entering into the purchase agreement. As of June 30, 2020, the Company had not sold any shares of common stock to Lincoln Park.

On July 24, 2020, the Company entered into a securities purchase agreement for the sale and issuance of an aggregate of 244,998 shares of the Company’s common stock, for an aggregate purchase price of $0.9 million, in a private placement transaction (“Private Placement”) with certain directors, officers, and employees at a price per share of $3.50. The shares of common stock issued in the Private Placement constitute “restricted securities” under the federal securities laws and are subject to a minimum six-month holding period.

The Company’s existing cash and cash equivalents available at June 30, 2020 combined with the funds raised subsequent to June 30, 2020 via the ATM and Private Placement are expected to fund operations into the first quarter of 2021 and enable it to advance emetine toward Investigational New Drug Application (“IND”) submission, continue to advance ACER-001 toward New Drug Application (“NDA”) submission, submit a plan with respect to EDSIVO^TM and obtain FDA feedback on whether the Company’s proposed plan will provide sufficient confirmatory evidence, advance osanetant toward IND submission, and provide for other working capital purposes, excluding support for a planned emetine clinical trial.

Management expects to continue to finance operations through the issuance of additional equity or debt securities, non-dilutive funding, and/or through strategic collaborations. Any transactions which occur may contain covenants that restrict the ability of management to operate the business and any securities issued may have rights, preferences, or privileges senior to the Company’s common stock and may dilute the ownership of current stockholders of the Company.

The accompanying financial statements have been prepared in conformity with GAAP, which contemplate continuation of the Company as a going concern. The Company has not established a source of revenues and, as such, has been dependent on funding operations through the sale of equity securities. Since inception, the Company has experienced significant losses and incurred negative cash flows from operations. The Company has an accumulated deficit of $87.0 million as of June 30, 2020 and expects to incur further losses over the next several years as it develops its business. The Company has spent, and expects to continue to spend, a substantial amount of funds in connection with implementing its business strategy, including its planned product development efforts and potential precommercial activities.

As of June 30, 2020, the Company had cash and cash equivalents of $5.9 million and current liabilities of $3.0 million. The Company’s cash and cash equivalents available at June 30, 2020 combined with the funds raised subsequent to June 30, 2020 via the ATM and Private Placement are expected to fund operations into the first quarter of 2021, excluding support for a planned emetine clinical trial.

The Company will need to raise additional capital to fund continued operations in 2021. The Company may not be successful in its efforts to raise additional funds or achieve profitable operations. The Company continues to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support its ongoing operations through and beyond the next 12 months, including raising additional capital through either private or public equity or debt financing or non-dilutive funding, as well as using its ATM facility and/or its $15.0 million equity line facility entered into on April 30, 2020 with Lincoln Park, which is subject to certain limitations and conditions. The Company has no commitments for any additional financing, except for the agreement with Lincoln Park. Any amounts raised will be used for further development of its product candidates, precommercial activities, potential acquisitions of additional product candidates, and for other working capital purposes.

If the Company is unable to obtain additional funding to support its current or proposed activities and operations, it may not be able to continue its operations as proposed, which may require it to suspend or terminate any ongoing development activities, modify its business plan, curtail various aspects of its operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, the Company’s stockholders may lose a substantial portion or even all of their investment.

These factors individually and collectively raise substantial doubt about the Company’s ability to continue as a going concern for twelve months from the date these financial statements are available, or August 13, 2020. The accompanying unaudited condensed financial statements do not include any adjustments or classifications that may result from the possible inability of the Company to continue as a going concern.

On September 19, 2017, the Company (then a Texas corporation known as Opexa Therapeutics, Inc.) completed its business combination with Acer Therapeutics Inc., a Delaware corporation (“Private Acer”), in accordance with the terms of the Agreement and Plan of Merger and Reorganization, dated as of June 30, 2017, by and among the Company, Opexa Merger Sub, Inc. (“Merger Sub”) and Private Acer, pursuant to which Merger Sub merged with and into Private Acer, with Private Acer surviving as a wholly-owned subsidiary of the Company (the “Merger”). Immediately following the Merger, the Company changed its name to “Acer Therapeutics Inc.” pursuant to amendments to its certificate of formation filed with the Texas Secretary of State on

September 19, 2017. Following the completion of the Merger, the business conducted by the Company became primarily the business conducted by Private Acer. For accounting and financial reporting purposes, Private Acer was considered to have acquired the Company in the Merger.

On May 15, 2018, the Company changed its state of incorporation from the State of Texas to the State of Delaware pursuant to a plan of conversion, dated May 15, 2018. Immediately following the reincorporation, the holding company structure was eliminated by merging wholly-owned subsidiary Private Acer with and into the Company. The Company was the surviving corporation in connection with the subsidiary merger.

The accompanying unaudited condensed financial statements are unaudited and have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Regulation S-X. The unaudited condensed financial statements have been prepared on the same basis as the audited annual financial statements and reflect, in the opinion of management, all adjustments of a normal and recurring nature that are necessary for the fair presentation of the Company’s financial position, results of operations, stockholders’ equity and cash flows for the periods presented. The results of operations for the three and six months ended June 30, 2020 are not necessarily indicative of the results to be expected for the year ending December 31, 2020 or for any other future annual or interim period. The condensed balance sheet as of December 31, 2019, included herein, was derived from the audited financial statements as of that date but does not include all disclosures required by GAAP. These unaudited financial statements should be read in conjunction with the Company’s audited financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2019.

Any reference in these notes to applicable guidance is meant to refer to the authoritative GAAP as found in the Accounting Standards Codification (“ASC”) and Accounting Standards Update (“ASU”) of the Financial Accounting Standards Board (“FASB”).

The Company’s significant accounting policies are described in Note 2, “Significant Accounting Policies,” in its Annual Report on Form 10-K for the year ended December 31, 2019.

The Company considers all highly liquid investments with maturities of three months or less at the date of purchase to be cash equivalents.

The Company follows the provisions of ASC Topic 820, Fair Value Measurement, which establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The Company considers its investments in money market funds of $5.4 million and $11.6 million as of June 30, 2020 and December 31, 2019, respectively, included in cash and cash equivalents, to be Level 1, which are based on unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date. The estimated fair value of the Company’s financial instruments, which include cash and cash equivalents, accounts payable, and accrued liabilities approximates their carrying value, based upon their short-term maturities or prevailing interest rates.

Goodwill represents the excess of the purchase price (consideration paid plus net liabilities assumed) of an acquired business over the fair value of the underlying net tangible and intangible assets. The Company evaluates the recoverability of goodwill according to ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350), which it adopted in the fourth quarter of 2018, annually, or more frequently if events or changes in circumstances indicate that the carrying value of goodwill might be impaired. The Company may opt to perform a qualitative assessment or a quantitative impairment test to determine whether goodwill is impaired. The Company’s goodwill is allocated to a single reporting unit. If the Company were to determine based on a qualitative assessment that it was more likely than not that the fair value of the reporting unit was less than its carrying value, a quantitative impairment test would then be performed. The quantitative impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than its carrying amount, a goodwill impairment would be recognized for the difference. The COVID-19 pandemic involving a respiratory illness caused by a novel coronavirus affected the worldwide economy and triggered decline in the stock markets. The Company considered potential triggering events related to COVID-19 and concluded that there was not a triggering event that would require the Company to perform further impairment analysis.

The Company records stock-based payments at fair value. The measurement date for compensation expense related to awards is generally the date of the grant. The fair value of awards is recognized as an expense in the condensed statement of operations over the requisite service period, which is generally the vesting period. The fair value of options is calculated using the Black-Scholes option pricing model. This option valuation model requires the use of assumptions including, among others, the volatility of stock price, the expected term of the option, and the risk-free interest rate.

The following assumptions were used to estimate the fair value of stock options granted during the six months ended June 30, 2020 and 2019 using the Black-Scholes option pricing model:

The Company’s accounting principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of assets and liabilities at the date of the condensed financial statements and reported amounts of revenues and expenses during the reporting period. Estimates having relatively higher significance include stock-based compensation, contract manufacturing accruals, and income taxes. Actual results could differ from those estimates and changes in estimates may occur.

The Company recorded no income tax expense or benefit during the three and six months ended June 30, 2020 and 2019, due to a full valuation allowance recognized against its net deferred tax assets. The Coronavirus Aid, Relief and Economic Security Act (the “CARES Act”) was enacted in the U.S. on March 27, 2020. The CARES Act, among other things, includes provisions relating to refundable payroll tax credits, deferment of employer side social security payments, net operating loss carryback periods, alternative minimum tax credit refunds, modifications to the net interest deduction limitations, increased limitations on qualified charitable contributions, and technical corrections to tax depreciation methods for qualified improvement property. The Company is required to recognize the effects of tax law changes in the period of enactment. The enactment of the CARES Act did not result in material adjustments for the income tax provision for the three and six months ended June 30, 2020 or to the Company’s assessment of the realizability of deferred tax assets as the carry back of net operating losses was used as a source of income. There were no other effects to the Company’s tax provision as a result of the CARES Act as of June 30, 2020.

Basic and diluted net loss per common share is computed by dividing net loss in each period by the weighted average number of shares of common stock outstanding during such period. For the periods presented, common stock equivalents, consisting of stock-based awards, were not included in the calculation of the diluted loss per share because to do so would be anti-dilutive.

Property and equipment consisted of the following at June 30, 2020 and December 31, 2019:

	June 30, 2020			December 31, 2019
Computer hardware and software	$	60,749		$	60,749
Leasehold improvements		60,535			60,535
Furniture and fixtures		145,487			145,487
Subtotal property and equipment, gross		266,771			266,771
Less accumulated depreciation		(108,216	)		(72,797	)
Property and equipment, net	$	158,555		$	193,974

Accrued expenses consisted of the following at June 30, 2020 and December 31, 2019:

	June 30, 2020		December 31, 2019
Accrued contract manufacturing	$	865,898	$	655,207
Accrued contract research and regulatory consulting		482,669		418,000
Accrued payroll and payroll taxes		265,533		153,238
Accrued legal		180,500		152,340
Accrued accounting, audit, and tax fees		99,500		147,850
Accrued consulting		77,400		109,073
Accrued license fees		62,936		—
Accrued miscellaneous expenses		48,545		56,598
Accrued precommercial costs		—		252,125
Total accrued expenses	$	2,082,981	$	1,944,431

On March 6, 2018, the Company entered into a lease agreement (the “Newton Lease”), commencing on October 1, 2018, for certain premises which consist of 2,760 square feet of office space located in Newton, Massachusetts (the “Newton Premises”) to serve as its corporate headquarters. On March 5, 2019, the Company entered into a lease agreement to amend the Newton Lease and to lease an additional 1,600 square feet of office space, commencing on June 1, 2019, located in Newton, Massachusetts (the “Additional Newton Premises”) to serve as additional space for its corporate headquarters. The term of the leases for the Newton Premises and the Additional Newton Premises expires on May 31, 2022. In addition, the Company is required to share in certain taxes and operating expenses of the Newton Premises and the Additional Newton Premises.

The Company entered into a Triple Net Lease (the “Bend Lease”) effective April 1, 2018 for certain premises consisting of 2,288 square feet of office space located in Bend, Oregon (the “Bend Premises”) to serve as a satellite facility. On April 23, 2019, the Company entered into a lease agreement to amend the Bend Lease and to lease additional office space, commencing on May 1, 2019, located in Bend, Oregon (the “Additional Bend Premises”). The term of the lease for the Bend Premises and the Additional Bend Premises expires on March 31, 2022 (the “Bend Term”). The Company has an option to extend the Bend Term for up to two additional periods of three years and a right of first refusal to lease an additional suite in the same building.

The leases for the Newton Premises, the Additional Newton Premises, the Bend Premises, and the Additional Bend Premises are classified as operating leases. In the first quarter of 2019, the Company adopted ASU 2016-02 and recorded a non-cash transaction to recognize a right-of-use asset of $0.4 million in other non-current assets, as well as a lease liability of $0.2 million in other current liabilities and $0.2 million in other non-current liabilities. Since the adoption of ASU 2016-02, the Company has recognized additional right-of-use assets totaling $0.3 million as well as additional lease liabilities totaling $0.1 million in other current liabilities and $0.2 million in other non-current liabilities in conjunction with the commencement of the leases for the Additional Newton Premises and the Additional Bend Premises. The Company’s lease liability represents the net present value of future lease payments utilizing a discount rate of 8%, which corresponds to the Company’s incremental borrowing rate. As of June 30, 2020, the weighted average remaining lease term was 1.9 years. For each of the three and six months ended June 30, 2020, the Company recorded expense of $0.1 million related to the leases. For the three and six months ended June 30, 2019, the Company recorded expense of $46 thousand and $0.1 million, respectively, related to the leases. During each of the three and six months ended June 30, 2020 and 2019, the Company made cash payments of $0.1 million for amounts included in the measurement of lease liabilities. The Company is therefore reporting a right-of-use asset of $0.5 million in Other non-current assets and lease liabilities totaling $0.5 million in Other current liabilities and Other non-current liabilities as of June 30, 2020.

The following table reconciles the undiscounted lease liabilities to the total lease liabilities recognized on the unaudited condensed balance sheet as of June 30, 2020:

In April 2014, Private Acer obtained exclusive rights to intellectual property relating to ACER-001 and preclinical and clinical data, through a license agreement with Baylor College of Medicine (“BCM”). Under the terms of the agreement, as amended, the Company has worldwide exclusive rights to develop, manufacture, use, sell and import licensed products as defined in the agreement. The license agreement requires the Company to make certain upfront and annual payments to BCM, as well as reimburse certain legal costs, make payments upon achievement of defined milestones, and pay royalties in the low single-digit percent range on net sales of any developed product over the royalty term.

In August 2016, Private Acer signed an agreement with Assistance Publique—Hôpitaux de Paris, Hôpital Européen Georges Pompidou (“AP-HP”) (via its Department of Clinical Research and Development) granting the Company the exclusive worldwide rights to access and use data from a randomized, controlled clinical study of celiprolol. The Company used this pivotal clinical data to support an NDA regulatory filing for EDSIVO^TM for the treatment of vEDS. The agreement requires the Company to make certain upfront payments to AP-HP, as well as reimburse certain costs and make payment of royalties in the low single-digit percent range on net sales of celiprolol over the royalty term.

In September 2018, the Company entered into a License Agreement for Development and Exploitation with AP-HP to acquire the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the optimal dose of celiprolol in treating vEDS patients, (ii) the use of celiprolol during pregnancy and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). Pursuant to the agreement, the Company will reimburse AP-HP for certain costs and will pay annual maintenance fee payments. Subject to a minimum royalty amount, the Company will also pay royalty payments on annual net sales of celiprolol during the royalty term in the low single digit percent range, depending upon whether there is a valid claim of a licensed patent. Under the agreement, the Company will control and pay the costs of ongoing patent prosecution and maintenance for the licensed applications. The Company may terminate the agreement in its sole discretion upon written notice to AP-HP, and AP-HP may terminate the agreement in the event the Company fails to make the required payments after notice and opportunity to cure. Additionally, the agreement will terminate if the Company terminates clinical development, marketing approval is withdrawn by the health or regulatory authorities in all countries, the Company ceases to do business or there is a procedure of winding-up by court decision against the Company. The Company subsequently filed three U.S. patent applications on this subject matter in October 2018.

In December 2018, the Company entered into an exclusive license agreement with Sanofi granting the Company worldwide rights to osanetant, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. The agreement required the Company to make a certain upfront payment to Sanofi, make payments upon achievement of defined development and sales milestones and pay royalties on net sales of osanetant over the royalty term. The Company plans to initially pursue development of osanetant as a potential treatment for iVMS.

On April 11, 2020, the Company was advised that its principal bank, JPMorgan Chase Bank, N.A., had approved a $0.6 million loan under the PPP pursuant to the CARES Act that was signed into law on March 27, 2020.

As a U.S. small business, the Company has qualified for the PPP, which allows businesses and nonprofits with fewer than 500 employees to obtain loans of up to $10 million to incent companies to maintain their workers as they manage the business disruptions caused by the COVID-19 pandemic.

The loan, evidenced by a promissory note to JPMorgan Chase Bank, N.A. as lender, has a term of two years, is unsecured, and is guaranteed by the Small Business Administration. The loan bears interest at a fixed rate of one percent per annum, with the first six months of interest and principal deferred. Some or all of the loan may be forgiven if at least 75% of the loan proceeds are used by the Company to cover payroll costs, including benefits, and if the Company maintains its employment and compensation within certain parameters during the period following the loan origination date and complies with other relevant conditions. On June 5, 2020, the Payroll Protection Flexibility Act of 2020 was signed into law, adjusting certain terms of the loans issued under the PPP, including extending the initial deferral period from six to up to ten months, extending the loan maturity from two to five years, reducing from 75% to 60% the portion of loan proceeds required to be used to cover payroll costs, and allowing borrowers to elect a 24-week rather than an eight-week period related to employment and compensation provisions.

There can be no assurance that this PPP loan can be forgiven. The Company recorded the liability associated with the loan in Other current liabilities and Other non-current liabilities and accounts for the loan according to ASC 470.

From time to time, the Company may become involved in litigation or proceedings relating to claims arising out of its operations.

On September 27, 2017, Piper Sandler & Co. (“Piper”) filed a lawsuit against the Company, Piper Sandler & Co. v. Acer Therapeutics Inc., Index No. 656055/2017, in the Supreme Court of the State of New York, County of New York. The complaint alleges that the Company breached its obligations to Piper pursuant to an August 30, 2016 engagement letter between the parties and an April 28, 2017 addendum thereto by failing to pay Piper (i) a fee of $1.1 million in connection with the financing which closed on September 19, 2017 for aggregate consideration of $15.7 million and (ii) $0.1 million in reimbursement for expenses incurred by Piper pursuant to the engagement letter. On November 10, 2017, the Company filed an answer and counterclaim in the lawsuit, denying Piper’s breach of contract allegation, asserting several defenses, and bringing several counterclaims, including claims for breach of contract and breach of the duty of good faith and fair dealing. Piper filed a reply to the counterclaims denying the essential allegations, and fact discovery has largely concluded. On February 22, 2019, Piper filed a motion for summary judgment. On March 26, 2020, the Court denied Piper’s motion in part, as to Piper’s claim and the Company’s counterclaim for damages, and granted in part, as to certain counterclaims by the Company. Discovery is ongoing in the case. Pursuant to the Court’s directive, the parties have submitted a joint request for a pre-trial conference, which has not yet been scheduled. The Company has not recorded a liability as of June 30, 2020 because a potential loss is not probable or reasonably estimable given the status of the proceedings.

On July 1, 2019, plaintiff Tyler Sell filed a putative class action lawsuit, Sell v. Acer Therapeutics Inc. et al, No. 1:19-cv-06137GHW, against the Company, Chris Schelling and Harry Palmin, in the U.S. District Court for the Southern District of New York. The Complaint alleges that the Company violated federal securities laws by allegedly making material false and misleading statements regarding the likelihood of FDA approval for the EDSIVO^TM NDA. With the selection of a lead plaintiff, the case is now captioned Skiadas v. Acer Therapeutics Inc. et al. The Lead Plaintiff filed a Second Amended Complaint on February 28, 2020 and the Company moved to dismiss the Second Amended Complaint on May 1, 2020. On June 16, 2020, the Court granted in part and denied in part the Company’s motion to dismiss. The Company filed its answer to the Second Amended Complaint on August 7, 2020, and the Court has scheduled an initial conference on August 17, 2020. The Company has not recorded a liability as of June 30, 2020 because a potential loss is not probable or reasonably estimable given the preliminary nature of the proceedings.

On August 12, 2019, a stockholder’s derivative action, Gress v. Aselage et al., No. 1:19-cv-01505-MN, was filed in the U.S. District Court for the District of Delaware against certain of the Company’s present and former officers and directors, asserting damages resulting from the alleged breach of their fiduciary duties, based on the same facts at issue in the Skiadas case. On March 17, 2020, a second stockholder’s derivative action, Giroux v. Amello et al., No. 1:20-cv-10537-GAO, was filed in the U.S. District

Court for the District of Massachusetts against the certain of the Company’s present and former officers and directors, asserting damages resulting from alleged breach of their fiduciary duties, based on the same facts at issue in the Skiadas and Gress cases. The parties in the Giroux and Gress litigations have entered stipulations to stay the cases pending a resolution of the motion to dismiss the Second Amended Complaint in the securities class action. No activity has occurred in either suit thus far. On June 23, 2020, a third stockholder derivative action, King v. Schelling, et al., No. 1:20-cv-04779-GHW, was filed in the U.S. District Court for the Southern District of New York against certain of the Company’s present and former officers and directors. On July 6, 2020, a fourth stockholder derivative action, Diaz v. Amello et al., No. 1:20-cv-00909-MN, was filed in the U.S. District Court for the District of Delaware against certain of the Company’s present and former officers and directors. The King and Diaz cases largely follow the derivative complaints in Giroux and Gress, alleging that the officers and directors breached their fiduciary duties by, among other things, permitting the Company to make misleading public statements regarding EDSIVO^TM. The parties will meet and confer to propose case schedules to the Court in each of the respective shareholder derivative actions. The Company has not recorded a liability as of June 30, 2020 because a potential loss is not probable or reasonably estimable given the preliminary nature of the proceedings.

On November 9, 2018, the Company entered into a sales agreement with Roth Capital Partners, LLC, and on March 18, 2020, the Company entered into an amended and restated sales agreement with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. The agreement provides a facility for the offer and sale of shares of common stock from time to time having an aggregate offering price of up to $50 million depending upon market demand, in transactions deemed to be an “at-the-market” (“ATM”) offering. Any such sales would be effected pursuant to the Company’s registration statement on Form S-3 (File No. 333-228319), declared effective by the SEC on November 21, 2018. The Company has no obligation to sell any shares of common stock pursuant to the agreement and may at any time suspend sales pursuant to the agreement. Each party may terminate the agreement at any time without liability. As of June 30, 2020, the Company had sold an aggregate of 363,549 shares of common stock at a gross sale price of $5.6177 per share, for gross proceeds of $2.0 million. For the six months ended June 30, 2020, proceeds, net of $0.1 million of fees and offering costs, were $1.9 million.

On April 30, 2020, the Company entered into a purchase agreement and a registration rights agreement pursuant to which Lincoln Park has committed to purchase up to $15.0 million of the Company’s common stock. Under the terms and subject to the conditions of the purchase agreement, the Company has the right, but not the obligation, to sell to Lincoln Park, and Lincoln Park is obligated to purchase up to $15.0 million of the Company’s common stock. Such sales of common stock by the Company, if any, will be subject to certain limitations, and may occur from time to time, at the Company’s sole discretion, over the 36-month period commencing on June 8, 2020. As of June 30, 2020, the Company has not sold any shares of common stock under the agreement. The number of shares the Company may sell to Lincoln Park on any single business day in a regular purchase is 50,000, but that amount may be increased up to 100,000 shares, depending upon the market price of the Company’s common stock at the time of sale and subject to a maximum limit of $1.0 million per regular purchase. The purchase price per share for each such regular purchase will be based on prevailing market prices of the Company’s common stock immediately preceding the time of sale as computed under the purchase agreement. In addition to regular purchases, the Company may also direct Lincoln Park to purchase other amounts as accelerated purchases or as additional accelerated purchases if the closing sale price of the common stock exceeds certain threshold prices as set forth in the purchase agreement.

Under applicable rules of the Nasdaq Capital Market, in no event may the Company issue or sell to Lincoln Park under the purchase agreement more than 19.99% of the shares of the Company’s common stock outstanding immediately prior to the execution of the purchase agreement, unless (i) the Company obtains stockholder approval to issue shares of common stock in excess of the Exchange Cap or (ii) the average price of all applicable sales of common stock to Lincoln Park under the purchase agreement equals or exceeds $2.1668, such that issuances and sales of the common stock to Lincoln Park under the purchase agreement would be exempt from the issuance limitation under applicable Nasdaq rules. The Company determined that the right to sell additional shares represents a freestanding put option under ASC 815 Derivatives and Hedging, but has a fair value of zero, and therefore no additional accounting was required.

Lincoln Park has no right to require the Company to sell any shares of common stock to Lincoln Park, but Lincoln Park is obligated to make purchases as the Company directs, subject to certain conditions. In all instances, the Company may not sell shares of its common stock to Lincoln Park under the purchase agreement if doing so would result in Lincoln Park beneficially owning more than 9.99% of its common stock.

Actual sales of shares of common stock to Lincoln Park under the purchase agreement will depend on a variety of factors to be determined by the Company from time to time, including, among others, market conditions, the trading price of the common stock and determinations by the Company as to the appropriate sources of funding for the Company and its operations.

The net proceeds under the purchase agreement to the Company will depend on the frequency and prices at which the Company sells shares of its stock to Lincoln Park. The Company issued 148,148 shares of common stock to Lincoln Park as a commitment fee in connection with entering into the purchase agreement. The $0.4 million fair value of the commitment fee shares was recorded to General and administrative expense along with other costs incurred in connection with entering into the purchase agreement.

The Company’s 2018 Stock Incentive Plan (the “2018 Plan”), adopted on May 14, 2018, provides for the grant of up to 500,000 shares of common stock as stock options, restricted stock, stock appreciation rights, restricted stock units, performance-based awards and cash-based awards that may be settled in cash, stock or other property to employees, executive officers, directors, and consultants.

In addition to the 500,000 shares, the total number of shares reserved for issuance under the 2018 Plan also consists of the sum of the number of shares subject to outstanding awards under the Company’s 2010 Stock Incentive Plan, as amended and restated (the “2010 Plan”), and the 2013 Stock Incentive Plan, as amended (the “2013 Plan”), as of the effective date of the 2018 Plan that are subsequently forfeited or terminated for any reason prior to being exercised or settled, plus the number of shares subject to vesting restrictions under the 2010 Plan and the 2013 Plan on the effective date of the 2018 Plan that are subsequently forfeited, plus the number of shares reserved but not issued or subject to outstanding grants under the 2010 Plan and the 2013 Plan as of the effective date of the 2018 Plan, up to a maximum of 635,170 shares in aggregate. In addition, the number of shares authorized for issuance under the 2018 Plan is automatically increased (the “evergreen provision”) on the first day of each fiscal year beginning on January 1, 2019, and ending on (and including) January 1, 2028, in an amount equal to the lesser of (i) 4% of the outstanding shares of common stock on the last day of the immediately preceding fiscal year, or (ii) another amount (including zero) determined by the Company’s Board of Directors. Any shares subject to awards granted under the 2018 Plan that are forfeited or terminated before being exercised or settled, or are not delivered to the participant because such award is settled in cash, will again become available for issuance under the 2018 Plan. Shares withheld to satisfy the grant, exercise price or tax withholding obligation related to an award will again become available for issuance under the 2018 Plan.

The 2018 Plan is administered by the Company’s Board of Directors, which may in turn delegate authority to administer the plan to a committee such as the Compensation Committee, referred to herein as the 2018 Plan administrator. Subject to the terms of the 2018 Plan, the 2018 Plan administrator will determine recipients, the number of shares or amount of cash subject to awards to be granted, whether an option is to be an incentive stock options or non-incentive stock options and the terms and conditions of the stock awards, including the period of their exercisability and vesting. Subject to the limitations set forth below, the 2018 Plan administrator will also determine the exercise price of options granted under the 2018 Plan. The 2018 Plan expressly provides that, without the approval of the stockholders, the 2018 Plan administrator does not have the authority to reduce the exercise price of any outstanding stock options or stock appreciation rights under the 2018 Plan (except in connection with certain corporate transactions, such as stock splits, certain dividends, recapitalizations, reorganizations, mergers, spin-offs and the like), or cancel any outstanding underwater stock options or stock appreciation rights in exchange for cash or new stock awards under the 2018 Plan.

Option awards are generally granted with an exercise price equal to the fair value of the common stock at the date of grant and have contractual terms of 10 years. Stock options granted to executive officers and employees generally vest either 1) over a four-year period, with 25% vesting on the one-year anniversary of the grant date and the remaining 75% vesting quarterly over the remaining three years, assuming continued service, and with vesting acceleration in full immediately prior to a change in control, or 2) for certain stock options granted on September 18, 2019, 50% vest on each of January 1, 2021 and January 1, 2022, assuming continued service, and with vesting acceleration in full immediately prior to a change in control. Restricted stock units generally vest and are settled upon the first anniversary of the grant date. At June 30, 2020, after the authorization on January 1, 2020 of 403,807 additional shares according to the evergreen provision, 500,453 shares of common stock remained available for the grant of future awards under the 2018 Plan.

The Company’s 2013 Plan provided for the issuance of up to 165,000 shares of common stock as incentive or non-qualified stock options and/or restricted common stock to employees, officers, directors, consultants and advisers. Option awards were generally granted with an exercise price equal to the fair value of the common stock at the date of grant and had contractual terms of 10 years. At June 30, 2020, all shares available under the 2013 Plan were subject to outstanding equity awards, and no new awards may be granted under the 2013 Plan.

The Company’s 2010 Plan, as amended and restated, provided for the grant of up to 470,170 shares of common stock as incentive or non-qualified stock options, stock appreciation rights, restricted stock units and/or restricted common stock to employees, officers, directors, consultants and advisers. Option awards were generally granted with an exercise price equal to the fair value of the common stock at the date of grant and had contractual terms of 10 years. At June 30, 2020, all shares available under the 2010 Plan were subject to outstanding equity awards, and no new awards may be granted under the 2010 Plan.

A summary of option activity under the 2018 Plan, 2013 Plan, and 2010 Plan for the six months ended June 30, 2020, is as follows:

Year-to-Date Activity	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (in millions)
Options outstanding at December 31, 2019		1,313,475	$	12.28		8.7
Granted		68,500		3.83
Options outstanding at June 30, 2020		1,381,975		11.87		8.3	$	0.1
Options exercisable at June 30, 2020		494,850	$	14.87		7.3	$	0.1

A summary of restricted stock unit activity under the 2018 Plan for the six months ended June 30, 2020, is as follows:

Year-to-Date Activity	Number of Shares			Weighted Average Grant Date Fair Value Per Share		Aggregate Intrinsic Value (in millions)
Non-vested outstanding at December 31, 2019		9,000		$	23.60
Granted		—			—
Vested/settled		(5,858	)
Cancelled/forfeited		(3,142	)
Non-vested outstanding at June 30, 2020		—			—		—

At June 30, 2020, there was $4.5 million of unrecognized compensation expense related to the stock-based compensation arrangements granted under all plans. The average remaining vesting period for options was 1.8 years. The weighted average grant date fair value of options granted during the six months ended June 30, 2020 was $2.18. The amount of stock-based compensation expense recorded to research and development expenses and to general and administrative expenses is detailed in table below:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Stock-based compensation
Research and development	$	228,197	$	317,148	$	490,654	$	619,134
General and administrative		375,377		398,218		780,258		768,159
	$	603,574	$	715,366	$	1,270,912	$	1,387,293

Basic net loss per share is computed by dividing the net loss in each period by the weighted-average number of common shares outstanding during such period. Diluted net loss per share is computed similarly to basic net loss per share except that the denominator is increased to include the number of additional common shares that would have been outstanding if the potential common shares had been issued and if the additional common shares were dilutive. For the periods presented, common stock equivalents, consisting of stock-based awards, were not included in the calculation of the diluted loss per share because to do so would be anti-dilutive.

As of June 30, 2020 and 2019, the number of shares of common stock underlying potentially dilutive securities are comprised of:

In June 2019, the Company received a Complete Response Letter from the FDA regarding its NDA for EDSIVO^TM (celiprolol) for the treatment of vEDS. The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. In order to reduce operating expenses and conserve cash resources, in June 2019, the Company initiated a corporate restructuring, which included a reduction of approximately 60% of its full-time workforce of 48 employees and halted precommercial activities of EDSIVO^TM. In the second quarter of 2019, the Company recorded a one-time severance-related charge of $1.5 million associated with the workforce reduction in the quarter ended June 30, 2019, of which $1.0 million was included in general and administrative expenses and $0.5 million was included in research and development expenses. As of December 31, 2019, the Company had no remaining liability related to the one-time severance-related charge.

Subsequent to June 30, 2020, during multiple trading days through August 6, 2020, the Company sold an additional aggregate of 1,055,002 shares of common stock under its ATM facility at an average price of $3.8007 per share, resulting in gross proceeds of $4.0 million. Proceeds, net of fees of $0.1 million, were $3.9 million.

On July 24, 2020, the Company entered into a securities purchase agreement for the sale and issuance of an aggregate of 244,998 shares of the Company’s common stock, for an aggregate purchase price of $0.9 million, in a Private Placement with certain directors, officers, and employees at a price per share of $3.50. The shares of common stock issued in the Private Placement constitute “restricted securities” under the federal securities laws and are subject to a minimum six-month holding period.

The following discussion and analysis of our financial condition is as of June 30, 2020. Our results of operations and cash flows should be read in conjunction with our unaudited condensed financial statements and notes thereto included elsewhere in this report and the audited financial statements and the notes thereto included in our Form 10-K for the year ended December 31, 2019.

This Quarterly Report on Form 10-Q contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Statements contained in this report, other than statements of historical fact, constitute “forward-looking statements.” The words “expects,” “believes,” “hopes,” “anticipates,” “estimates,” “may,” “could,” “intends,” “exploring,” “evaluating,” “progressing,” “proceeding” and similar expressions are intended to identify forward-looking statements.

These forward-looking statements do not constitute guarantees of future performance. Investors are cautioned that statements which are not strictly historical statements, including, without limitation, statements regarding current or future financial payments, costs, returns, royalties, performance and position, plans and objectives for future operations, plans and objectives for product development, plans and objectives for present and future clinical trials and results of such trials, plans and objectives for regulatory approval, litigation, intellectual property, product development, manufacturing plans and performance, management’s initiatives and strategies, and the development of our product candidates, including emetine hydrochloride (“emetine”), ACER-001, EDSIVO™ (celiprolol), and osanetant, constitute forward-looking statements. Such forward-looking statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from those anticipated. These risks and uncertainties include, but are not limited to, those risks discussed in “Risk Factors,” as well as, without limitation, risks associated with:

These forward-looking statements speak only as of the date made. We assume no obligation or undertaking to update any forward-looking statements to reflect any changes in expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based. You should, however, review additional disclosures we make in the reports we file with the Securities and Exchange Commission (“SEC”).

We are a pharmaceutical company focused on the acquisition, development, and commercialization of therapies for serious rare and life-threatening diseases with significant unmet medical needs. Our pipeline includes four clinical-stage candidates: emetine for the treatment of patients with COVID-19; ACER-001 (a taste-masked, immediate release formulation of sodium phenylbutyrate) for the treatment of various inborn errors of metabolism, including urea cycle disorders (“UCD”) and Maple Syrup Urine Disease

(“MSUD”); EDSIVO™ (celiprolol) for the treatment of vascular Ehlers-Danlos syndrome (“vEDS”) in patients with a confirmed type III collagen (COL3A1) mutation; and osanetant for the treatment of induced vasomotor symptoms (“iVMS”). Our product candidates are believed to present a comparatively de-risked profile, having one or more of a favorable safety profile, clinical proof-of-concept data, mechanistic differentiation, and/or accelerated paths for development through specific programs and procedures established by the United States (“U.S.”) Food and Drug Administration (“FDA”).

On May 11, 2020, we announced that we have entered into a research collaboration agreement with the National Center for Advancing Translational Sciences (“NCATS”), one of the National Institutes of Health (“NIH”), to develop emetine as a potential treatment for patients with COVID-19, the disease caused by infection with the SARS-CoV-2 virus. Emetine is an active pharmaceutical ingredient of syrup of ipecac, given orally to induce emesis, and has also been formulated as an injectable to treat thousands of individuals with amebiasis. Several independent in vitro studies have demonstrated nanomolar potency against both DNA and RNA-replicating viruses, including Zika virus, Ebola virus¹, Rabies Lyssavirus, human cytomegalovirus, human immunodeficiency virus 1, influenza A virus, Rift Valley fever virus, echovirus 1, human metapneumovirus, and herpes simplex virus type 2². Clinically, emetine has been used to treat approximately 700 patients (including pediatrics) with viral hepatitis³ and varicella-zoster virus⁴. Additionally, emetine is a potent inhibitor of multiple genetically-distinct coronaviruses and demonstrated in vitro the strongest anti-coronavirus activity in one study that screened and identified approved compounds with broad-spectrum efficacy against the replication of four coronaviruses⁵ and specifically against SARS-CoV-2.⁶

Pursuant to the NCATS research collaboration agreement, Acer and NCATS are working together to speed the clinical development of emetine for the treatment of SARS-CoV-2 infection (the “Research Project”). Acer has defined a target product profile for the clinical development program and will share details with NCATS on aspects of its clinical development program to facilitate the urgent development of this therapy. NCATS has completed a literature review of clinical experience with emetine use, as well as artifacts including previous drug product labels and a drug master file, that it will share with Acer. NCATS also has access to a quantity of emetine physical material to support further nonclinical studies by Acer. Inventions made in the course of the Research Project will be owned by the party employing the inventor or inventors; inventions that are invented jointly by employees of both parties will be owned jointly. The research collaboration agreement has a one-year term, may be extended or terminated upon mutual agreement of the parties and may be terminated by either party with 30 days written notice.

We are working toward submission of an Investigational New Drug Application (“IND”) and targeting initiation of a Phase 2/3 clinical trial evaluating emetine in high-risk COVID-19 outpatients in the first half of 2021, subject to additional capital and FDA acceptance of our IND. Any additional FDA requirements may delay our clinical trial start date. If our IND is accepted and if our clinical trial is successful, we intend to initially seek FDA approval to market emetine in the U.S. for the treatment of patients with COVID-19. We intend to conduct an adaptive design Phase 2/3 randomized, double-blind, placebo-controlled multi-center trial to evaluate the safety and antiviral activity of emetine in high-risk symptomatic adult patients with confirmed COVID-19 infection not requiring hospitalization. Based on the FDA pre-IND advice received to-date, we do not anticipate that a Phase 1 clinical trial in healthy volunteers will be required prior to initiating the proposed Phase 2/3 clinical trial although there can be no assurance that FDA will not require a Phase 1 trial or other IND-enabling activities. The potential for cardiotoxicity, in cumulative doses of emetine above 650 mg, has been cited in literature as a reason for its restricted clinical use in most recent years. Patients treated with a subcutaneous injection of emetine at a cumulative dose of 650 mg did not experience any notable toxicity⁷. As a potential antiviral treatment for COVID-19 patients, we propose to administer emetine as a subcutaneous injection at a cumulative dose of approximately 120 mg. If the Phase 2/3 trial is completed successfully, we anticipate submitting a New Drug Application (“NDA”) for emetine to the FDA for the treatment of COVID-19.

The initiation of the Phase 2/3 trial, its conduct and completion, and NDA submission are subject to our ability to generate sufficient capital resources to fund this program. There can be no assurance that we will be able to obtain funding in an amount and upon terms which would allow us to continue our emetine program. Emetine is an investigational drug for COVID-19 and is not currently FDA approved for any indication.

The accompanying financial statements have been prepared in conformity with GAAP, which contemplate our continuation as a going concern. We have not established a source of revenues and, as such, have been dependent on funding operations through the sale of equity securities. Since inception, we have experienced significant losses and incurred negative cash flows from operations. We have an accumulated deficit of $87.0 million as of June 30, 2020 and expect to incur further losses over the next several years as we develop our business. We have spent, and expect to continue to spend, a substantial amount of funds in connection with implementing our business strategy, including our planned product development efforts and potential precommercial activities.

As of June 30, 2020, we had cash and cash equivalents of $5.9 million and current liabilities of $3.0 million. Our cash and cash equivalents available at June 30, 2020 combined with the funds raised subsequent to June 30, 2020 via the ATM and a private placement transaction (“Private Placement”) are expected to fund operations into the first quarter of 2021, excluding support for a planned emetine clinical trial.

We will need to raise additional capital to fund continued operations in 2021. We may not be successful in our efforts to raise additional funds or achieve profitable operations. We continue to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support our ongoing operations through and beyond the next 12 months, including and raising additional capital through either private or public equity or debt financing, or non-dilutive funding, as well as using our ATM facility and/or our $15.0 million equity line facility entered into on April 30, 2020 with Lincoln Park Capital Fund, LLC (“Lincoln Park”), which is subject to certain limitations and conditions. We have no commitments for any additional financing, except for the agreement with Lincoln Park. Any amounts raised will be used for further development of our product candidates, precommercial activities, potential acquisitions of additional product candidates, and for other working capital purposes.

Subsequent to June 30, 2020, during multiple trading days through August 6, 2020, we sold an additional aggregate of 1,055,022 shares of common stock under our ATM facility at an average price of $3.8007 per share, resulting in gross proceeds of $4.0 million. Proceeds, net of fees of $0.1 million, were $3.9 million.

On July 24, 2020, we entered into a securities purchase agreement for the sale and issuance of an aggregate of 244,998 shares of our common stock, for an aggregate purchase price of $0.9 million, in a Private Placement transaction with certain directors, officers, and employees at a price per share of $3.50. The shares of common stock issued in the Private Placement constitute “restricted securities” under the federal securities laws and are subject to a minimum six-month holding period.

If we are unable to obtain additional funding to support our current or proposed activities and operations, we may not be able to continue our operations as proposed, which may require us to suspend or terminate any ongoing development activities, modify our business plan, curtail various aspects of our operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, our stockholders may lose a substantial portion or even all of their investment.

These factors individually and collectively raise substantial doubt about our ability to continue as a going concern for twelve months from the date these financial statements are available, or August 13, 2020. Our financial statements do not include any adjustments or classifications that may result from our possible inability to continue as a going concern.

In June 2019, we received a Complete Response Letter from the FDA regarding our NDA for EDSIVO^TM (celiprolol) for the treatment of vEDS. The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. In order to reduce operating expenses and conserve cash resources, in June 2019, we initiated a corporate restructuring, which included a reduction of approximately 60% of our full-time workforce of 48 employees and halted precommercial activities for EDSIVO^TM. We recorded a one-time severance-related charge of $1.5 million associated with the workforce reduction in the quarter ended June 30, 2019. On March 18, 2020, we announced that the Office of New Drugs of the FDA denied the our appeal of the Complete Response Letter in relation to the NDA for EDSIVO^TM but described possible paths forward for us to explore that could provide the substantial evidence of effectiveness needed to support a potential resubmission of the EDSIVO^TM NDA.

On May 15, 2018, we changed our state of incorporation from the State of Texas to the State of Delaware pursuant to a plan of conversion, dated May 15, 2018. Immediately following the reincorporation, we eliminated our holding company structure by merging wholly-owned subsidiary Private Acer with and into the Company. The Company was the surviving corporation in connection with the subsidiary merger.

We have no products approved for commercial sale and have not generated any revenue from product sales. We do not expect to generate any revenue from product sales unless and until we obtain regulatory approval for and commercialize any of our product candidates.

In the future, we may generate revenue by entering into licensing arrangements or strategic alliances. To the extent we enter into any license arrangements or strategic alliances, we expect that any revenue we generate will fluctuate from quarter-to-quarter as a result of the timing of achievement of preclinical, clinical, regulatory and commercialization milestones, if at all, the timing and amount of payments relating to such milestones, as well as the extent to which any products are approved and successfully commercialized.

If our product candidates are not developed in a timely manner, if regulatory approval is not obtained for them, or if such product candidates are not commercialized, our ability to generate future revenue, and our results of operations and financial position, would be adversely affected.

Research and development expenses consist of costs associated with the development of our product candidates. Our research and development expenses include:

We expense research and development costs as incurred. We account for nonrefundable advance payments for goods and services that will be used in future research and development activities as expenses when the service has been performed or when the goods have been received.

At any time, we are working on multiple programs. Our internal resources, employees, and infrastructure are not directly tied to any one research or drug discovery project and are typically deployed across multiple projects. As such, we do not generate meaningful information regarding the costs incurred for these early stage research and drug discovery programs on a specific project basis.

Since our inception in December 2013, we have spent a total of $47.4 million in research and development expenses through June 30, 2020. Of that amount, approximately $31.6 million was directly related to EDSIVO^TM, approximately $12.1 million was directly related to ACER-001, approximately $2.4 million was directly related to osanetant, and approximately $1.0 million was directly related to emetine.

We expect our research and development expenses to be substantial for the foreseeable future as we continue to conduct our ongoing regulatory activities, initiate new preclinical and clinical trials, and build upon our pipeline. The process of conducting

clinical trials and preclinical studies necessary to obtain regulatory approval, preparing to seek regulatory approval, and preparing for commercialization in the event of regulatory approval, is costly and time-consuming. We may never succeed in achieving marketing approval for any of our product candidates.

Successful development of product candidates is highly uncertain and may not result in approved products. Completion dates and completion costs can vary significantly for each product candidate and are difficult to predict. We anticipate we will make determinations as to which programs to pursue and how much funding to direct to each program on an ongoing basis in response to our ability to enter into new strategic alliances with respect to each program or potential product candidate, the scientific and clinical success of each product candidate, the timing and ability to obtain regulatory approval for our product candidates (if any), and ongoing assessments as to each product candidate’s commercial potential. We will need to raise additional capital and may seek to do so through public or private equity or debt financings, government or other third-party funding, marketing and distribution arrangements and other collaborations, strategic alliances and licensing arrangements or a combination of these approaches. However, we may be unable to raise additional funds or enter into such other arrangements when needed on favorable terms or at all. Our failure to raise capital or enter into such other arrangements as and when needed would have a negative impact on our financial condition and our ability to develop our product candidates, pursue regulatory approvals, and operate our business as planned.

General and administrative expenses consist primarily of employee-related expenses, including salaries, benefits, and stock-based compensation; precommercial costs, and professional fees for legal, business consulting, auditing, and tax services. We expect that general and administrative expenses will be substantial in the future.

Other (expense) income, net consists primarily of interest income. We earn interest income from interest-bearing accounts and money market funds, which we classify as cash and cash equivalents. Additionally, we record as part of other (expense) income, net, transactional gains and losses on foreign currency denominated assets and liabilities when they are revalued each period due to changes in underlying exchange rates.

This management’s discussion and analysis of financial condition and results of operations is based on our condensed financial statements, which have been prepared in accordance with accounting principles generally accepted in the U.S. (“GAAP”). The preparation of these condensed financial statements requires our management to make estimates and judgments that affect the reported amounts of assets, liabilities and expenses. On an ongoing basis, we evaluate these estimates and judgments. We base our estimates on historical experience and on various assumptions that we believe to be reasonable under the circumstances. These estimates and assumptions form the basis for making judgments about the carrying values of assets and liabilities and the recording of expenses that are not readily apparent from other sources. Actual results may differ materially from these estimates. We believe that the accounting policies discussed below are critical to understanding our historical and future performance, as these policies relate to the more significant areas involving our judgments and estimates. Other than those noted within Note 2 to our unaudited condensed financial statements, there have been no material changes to our critical accounting policies during the six months ended June 30, 2020. Please refer to Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our annual report on Form 10-K for the fiscal year ended December 31, 2019 for a discussion of our critical accounting policies and significant judgments and estimates.

Goodwill represents the excess of the purchase price (consideration paid plus net liabilities assumed) of an acquired business over the fair value of the underlying net tangible and intangible assets. We evaluate the recoverability of goodwill according to ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350), which we adopted in the fourth quarter of 2018, annually, or more frequently if events or changes in circumstances indicate that the carrying value of goodwill might be impaired. We may opt to perform a qualitative assessment or a quantitative impairment test to determine whether goodwill is impaired. Our goodwill is allocated to a single reporting unit. If we were to determine based on a qualitative assessment that it was more likely than not that the fair value of the reporting unit was less than its carrying value, a quantitative impairment test would then be performed. The quantitative impairment test compares the fair value of the reporting unit with its carrying amount, including goodwill. If the estimated fair value of the reporting unit is less than its carrying amount, a goodwill impairment would be recognized for the difference.

We account for stock-based compensation expense related to stock options under our 2018 Stock Incentive Plan, our 2013 Stock Incentive Plan, as amended, and our 2010 Stock Incentive Plan, as amended and restated, by estimating the fair value of each stock

option on the date of grant using the Black-Scholes model. We recognize stock-based compensation expense for stock options and restricted stock units on a straight-line basis over the vesting term.

Research and development costs are expensed as incurred and include compensation and related benefits, license fees and outside contracted research and manufacturing consultants. We sometimes make nonrefundable advance payments for goods and services that will be used in future research and development activities. These payments are capitalized and recorded as an expense in the period that we receive the goods or when the services are performed.

We make estimates of prepaid and/or accrued expenses as of each balance sheet date in our financial statements based on certain facts and circumstances at that time. Our accrued expenses for preclinical studies and clinical trials are based on estimates of costs incurred for services provided by contract research organizations (“CRO”), manufacturing organizations, and for other trial- and study-related activities. Payments under our agreements with external service providers depend on a number of factors such as site initiation, patient screening, enrollment, delivery of reports, and other events. In accruing for these activities, we obtain information from various sources and estimate the level of effort or expense allocated to each period. Adjustments to our research and development expenses may be necessary in future periods as our estimates change. As these activities are generally material to our overall financial statements, subsequent changes in estimates may result in a material change in our accruals. No material changes in estimates were recognized in the six months ended June 30, 2020 and 2019. At June 30, 2020 and 2019, there were no material accruals for clinical or preclinical study expense.

The following table summarizes our results of operations for the three months ended June 30, 2020 and 2019:

	Three Months Ended June 30,
	2020			2019			$ Change			% Change
Research and development	$	2,816,749		$	4,246,244		$	(1,429,495	)		(34	)%
General and administrative		2,953,137			6,919,476			(3,966,339	)		(57	)%
Loss from operations		(5,769,886	)		(11,165,720	)		5,395,834			(48	)%
Total other (expense) income, net		(915	)		124,213			(125,128	)		(101	)%
Net loss	$	(5,770,801	)	$	(11,041,507	)	$	5,270,706			(48	)%

Research and development expenses were $2.8 million during the three months ended June 30, 2020, as compared to $4.2 million during the three months ended June 30, 2019. This decrease of $1.4 million was primarily due to decreases in employee-related expenses and clinical and regulatory consulting as a direct result of the Complete Response Letter received from the FDA in June 2019, partially offset by increases in contract research and contract manufacturing expenses. Research and development expenses for the three months ended June 30, 2020 were primarily comprised of approximately $1.0 million related to emetine, approximately $0.9 million related to ACER-001, and approximately $0.8 million related to osanetant.

General and administrative expenses were $3.0 million for the three months ended June 30, 2020, as compared to $6.9 million for the three months ended June 30, 2019. This decrease of $3.9 million was primarily due to decreases in precommercial and employee-related expenses as a direct result of the Complete Response Letter received from the FDA in June 2019, partially offset by costs related to implementing our purchase agreement with Lincoln Park.

Other (expense) income, net of $(1) thousand during the three months ended June 30, 2020 was primarily attributable to foreign currency gain and interest income, offset by bank fees. Other income, net of $0.1 million during the three months ended June 30, 2019 was primarily attributable to interest income.

The following table summarizes our results of operations for the six months ended June 30, 2020 and 2019:

	Six Months Ended June 30,
	2020			2019			$ Change			% Change
Research and development	$	5,601,688		$	8,192,464		$	(2,590,776	)		(32	)%
General and administrative		5,139,653			11,150,174			(6,010,521	)		(54	)%
Loss from operations		(10,741,341	)		(19,342,638	)		8,601,297			(44	)%
Total other (expense) income, net		21,834			332,426			(310,592	)		(93	)%
Net loss	$	(10,719,507	)	$	(19,010,212	)	$	8,290,705			(44	)%

Research and development expenses were $5.6 million during the six months ended June 30, 2020, as compared to $8.2 million during the six months ended June 30, 2019. This decrease of $2.6 million was primarily due to decreases in employee-related expenses, clinical and regulatory consulting, and contract manufacturing as a direct result of the Complete Response Letter received from the FDA in June 2019, partially offset by an increase in contract research expenses. Research and development expenses for the six months ended June 30, 2020 were primarily comprised of approximately $2.3 million related to ACER-001, approximately $1.2 million related to osanetant, approximately $1.0 million related to emetine, and approximately $0.5 million related to EDSIVO^TM.

General and administrative expenses were $5.1 million for the six months ended June 30, 2020, as compared to $11.2 million for the six months ended June 30, 2019. This decrease of $6.1 million was primarily due to decreases in employee-related and precommercial expenses as a direct result of the Complete Response Letter received from the FDA in June 2019, partially offset by costs related to implementing our purchase agreement with Lincoln Park.

Other (expense) income, net of $22 thousand and $0.3 million during the six months ended June 30, 2020 and 2019, respectively, was primarily attributable to interest income.

We have never been profitable and have incurred operating losses in each year since inception. From inception to June 30, 2020, we have raised net cash proceeds of $83.6 million, primarily from common stock offerings, private placements of convertible preferred stock, and debt financings. As of June 30, 2020, we had $5.9 million in cash and cash equivalents and current liabilities aggregating to $3.0 million. Our net loss was $5.8 million for the three months ended June 30, 2020. As of June 30, 2020, we had an accumulated deficit of $87.0 million. Substantially all of our operating losses resulted from expenses incurred in connection with our research and development programs and from general and administrative costs associated with our operations.

The following table shows a summary of our cash flows for the six months ended June 30, 2020 and 2019:

	Six Months Ended June 30,
	2020			2019
Net cash (used in) provided by:
Operating activities	$	(8,700,353	)	$	(18,140,401	)
Investing activities		—			(134,960	)
Financing activities		2,503,574			92,272
Net decrease in cash and cash equivalents	$	(6,196,779	)	$	(18,183,089	)

Cash used in operating activities was $8.7 million for the six months ended June 30, 2020, as compared to $18.1 million for the six months ended June 30, 2019. The decrease of $9.4 million was primarily the result of the curtailment of precommercial activities as a result of the Complete Response Letter we received from the FDA in June 2019, resulting in a significantly lower net loss adjusted for non-cash items.

No net cash was provided by or used in investing activities during the six months ended June 30, 2020. Net cash used in investing activities during the six months ended June 30, 2019 related primarily to purchases of computer equipment and furniture and fixtures.

Cash provided by financing activities was $2.5 million for the six months ended June 30, 2020 and was comprised of proceeds from the issuance of common stock, net of issuance costs, as well as proceeds from the receipt of a Paycheck Protection Program loan. Cash provided by financing activities was $0.1 million for the six months ended June 30, 2019 and was comprised of proceeds from the exercise of stock options.

We have not generated any revenue from product sales. We do not expect to generate any revenue from product sales unless and until we obtain regulatory approval for and commercialize any of our product candidates. At the same time, we expect to continue to incur significant expenses in connection with our ongoing development and manufacturing activities, particularly as we continue the research, development, manufacture and clinical trials of, and seek regulatory approval for, our product candidates. In addition, subject to obtaining regulatory approval of any of our product candidates and thereafter successfully commercializing any such product candidates, we anticipate that we will need substantial additional funding in connection with our continuing operations.

In June 2019, in order to reduce operating expenses and conserve cash resources following the receipt of the FDA’s Complete Response Letter, we implemented a corporate restructuring which included a reduction of approximately 60% of our full-time workforce of 48 employees and halted precommercial activities of EDSIVO™. We recorded a one-time severance-related charge of $1.5 million associated with the workforce reduction. In December 2019, we submitted a Formal Dispute Resolution Request to the FDA’s Office of New Drugs appealing the FDA’s decision as outlined in the Complete Response Letter. In March 2020, we received a response to our Formal Dispute Resolution Request from the Office of New Drugs of the FDA stating that it had denied our appeal of the Complete Response Letter in relation to the NDA for EDSIVO™. In its Appeal Denied letter, the Office of New Drugs described possible paths forward for us to explore that could provide the substantial evidence of effectiveness needed to support a potential resubmission of the EDSIVO™ NDA for the treatment of patients with vEDS with a confirmed COL3A1 mutation. In its Appeal Denied letter, the Office of New Drugs referred to the FDA Guidance document issued in December 2019, where substantial evidence of effectiveness can be provided by two or more adequate and well-controlled studies demonstrating efficacy, or a single positive adequate and well-controlled study plus confirmatory evidence. While neither resubmission nor the prospect of approval of the EDSIVO^TM NDA is assured, we are evaluating our possible next steps with the goal of resubmission of the EDSIVO™ NDA. Depending on our progress, as well as our available resources and needs, we may decide at any time not to continue development of EDSIVO™, which could have a material adverse effect on our business operations and financial prospects.

On March 18, 2020, we entered into an amended and restated sales agreement with JonesTrading Institutional Services LLC and Roth Capital Partners, LLC. This agreement provides a facility for the offer and sale of shares of common stock from time to time depending upon market demand, in transactions deemed to be an “at-the-market” (“ATM”) offering. As of June 30, 2020, we have sold an aggregate of 363,549 shares of common stock at a gross sale price of $5.6177 per share, for gross proceeds of $2.0 million. Proceeds, net of $0.1 million of fees and offering costs, were $1.9 million. We will need to keep current our shelf registration statement and the offering prospectus relating to the ATM facility, in addition to providing certain periodic deliverables under the sales agreement, in order to use such facility. Due to the SEC's “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company's public float in a 12-month period, we are only able to issue a limited number of shares which aggregate no more than one-third of our public float using our shelf registration statement at this time. Subsequent to June 30, 2020, during multiple trading days through August 6, 2020, we sold an additional aggregate of 1,055,002 shares of common stock at an average gross sales price of $3.8007 per share, resulting in gross proceeds of $4.0 million. Proceeds, net of fees of $0.1 million, were $3.9 million.

On April 30, 2020, we entered into a $15.0 million purchase agreement and registration rights agreement with Lincoln Park pursuant to which we have the right to sell to Lincoln Park an aggregate of up to $15.0 million in shares of our common stock, subject

to certain conditions and limitations. Under the terms and subject to the conditions of the purchase agreement, Lincoln Park is obligated to purchase up to an aggregate of $15.0 million in shares of common stock (subject to certain limitations) from time to time over a 36-month period commencing on June 8, 2020. As of June 30, 2020, we have not sold any shares of common stock under the agreement. We may direct Lincoln Park, at our sole discretion and subject to certain conditions, to purchase up to 50,000 shares of common stock in regular purchases, increasing to amounts of up to 100,000 shares depending upon the closing sale price of our common stock. In addition, we may direct Lincoln Park to purchase additional amounts as accelerated purchases or as additional accelerated purchases. The purchase price of shares of common stock related to this future funding will be based upon the market price of our common stock preceding the time of sale as computed under purchase agreement. However, there can be no assurance that we will be able to receive any or all of the funds from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default and other provisions that could limit our ability to cause Lincoln Park to buy common stock from us.

As of June 30, 2020, we had $5.9 million in cash and cash equivalents and current liabilities of $3.0 million. Based on available resources, we believe that our cash and cash equivalents currently on hand combined with the funds raised subsequent to June 30, 2020 via the ATM and Private Placement are sufficient to fund our currently anticipated operating and capital requirements into the first quarter of 2021, excluding support for a planned emetine clinical trial.

Our future capital requirements are difficult to forecast and will depend on many factors, including but not limited to:

We will continue to require substantial additional capital to continue our clinical development and pursuit of regulatory approval activities. Accordingly, we will need to raise substantial additional capital to continue to fund our operations. The amount and timing of our future funding requirements will depend on many factors, including the pace and results of our development, regulatory conditions and requirements, and commercialization efforts. Failure to raise capital as and when needed, on favorable terms or at all, would have a negative impact on our financial condition and our ability to develop our product candidates, pursue regulatory approvals, potentially commercialize (if approved) our product candidates, and operate our business as planned.

We expect to incur significant expenses and operating losses for at least the foreseeable future as we initiate and continue the clinical development of, seek regulatory approval for, and potentially commercialize (if approved) our product candidates. In addition, operating as a publicly-traded company involves upgrading financial information systems and incurring costs associated with operating as a public company. We expect that our operating losses will fluctuate significantly from quarter-to-quarter and year-to-year due to the timing of clinical development programs, efforts to achieve regulatory approval, and planning for potential commercialization (if approved) of our product candidates.

Until we can generate a sufficient amount of product revenue to finance our cash requirements, which would require us to obtain regulatory approval for and successfully commercialize one or more of our product candidates, we expect to finance our future cash needs primarily through the issuance of additional equity and potentially through borrowing, non-dilutive funding, and strategic alliances. Other than the purchase agreement we entered into with Lincoln Park, which is subject to certain limitations and conditions, and our ATM facility, we do not maintain any lines of credit or have any sources of debt or equity capital committed for funding.

We continue to explore potential opportunities and alternatives to obtain the additional resources that will be necessary to support our ongoing operations through and beyond the next 12 months, including raising additional capital through either private or public equity or debt financing, or non-dilutive funding, as well as using our ATM facility and/or our equity line facility. To the extent that we raise additional capital through the issuance of additional equity or convertible debt securities, the ownership interest of our stockholders will be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of existing stockholders. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. If we raise additional funds through marketing and distribution arrangements or other collaborations, strategic alliances or licensing arrangements with third parties, we may have to relinquish valuable rights to our technologies, future revenue streams, research programs or product candidates or grant licenses on terms that may not be favorable to us.

If we are unable to raise additional funds through public or private equity or debt financings or other sources, such as non-dilutive funding or strategic collaborations, when needed, we may be required to delay, limit, reduce or terminate our product development or pursuit of regulatory approval efforts or provide rights to develop and market product candidates to third parties that we would otherwise prefer to develop and, if applicable, market ourselves. Further, if we are unable to obtain additional funding to support our current or proposed activities and operations, we may not be able to continue our operations as proposed, which may require us to suspend or terminate any ongoing development activities, modify our business plan, curtail various aspects of our operations, cease operations, or seek relief under applicable bankruptcy laws. In such event, our stockholders may lose a substantial portion or even all of their investment.

In April 2014, we obtained exclusive rights to patents and certain other intellectual property relating to ACER-001 and preclinical and clinical data, through an exclusive license agreement with Baylor College of Medicine (“BCM”). Under the terms of the agreement, as amended, we have worldwide exclusive rights to develop, manufacture, use, sell and import products incorporating the licensed intellectual property. The license agreement requires us to make upfront and annual payments to BCM, reimburse certain of BCM’s legal costs, make payments upon achievement of defined milestones, and pay low single-digit percent royalties on net sales of any developed product over the royalty term.

In June 2016, we entered into an agreement with Aventis Pharma SA (now Sanofi) granting us the exclusive access and exclusive right to use the data included in the marketing authorization application dossier filed with and approved by the MHRA in 1986 for the treatment of mild to moderate hypertension pursuant to the UK regulatory approval procedure, for the sole purpose of allowing us to further develop, manufacture, register and commercialize celiprolol in the U.S. and Brazil for the treatment of EDS, Marfan syndrome and Loeys-Dietz syndrome. We have paid in full for the exclusive access and right to use the data. Subsequently we amended our agreement with Sanofi to provide the same rights to data access and use for potential marketing approval in all of North and South America.

In August 2016, we entered into an agreement with AP-HP granting us the exclusive worldwide rights to access and use data from a multicenter, prospective, randomized, open trial related to the use of celiprolol for the treatment of vEDS. We utilized this clinical data to support and NDA filing for EDSIVO^TM for the treatment of vEDS. The agreement requires us to make certain upfront payments to AP-HP, reimburse certain of AP-HP’s costs, make payments upon achievement of defined milestones and pay low single-digit percent royalties on net sales of celiprolol over the royalty term.

In September 2018, we entered into an additional agreement with AP-HP to acquire the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the use of celiprolol during pregnancy, (ii) the optimal dose of celiprolol in treating vascular Ehlers-Danlos syndrome (“vEDS”) patients and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). Pursuant to the agreement, we will reimburse AP-HP for certain costs and will pay annual maintenance fee payments. Subject to a minimum royalty amount, we will also pay royalty payments on annual net sales of celiprolol during the royalty term in the low single digit percent range, depending upon whether there is a valid claim of a licensed patent. Under the agreement, we will control and pay the costs of ongoing patent prosecution and maintenance for the licensed applications. We subsequently filed three U.S. patent applications on this subject matter in October

2018. We may choose to limit our pursuit of patent applications to specific territories, in which case AP-HP would have the right to revise our territorial license rights accordingly.

In December 2018, we entered into an exclusive license agreement with Sanofi granting us worldwide rights to osanetant, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. The agreement requires us to make certain upfront payments to Sanofi, make payments upon achievement of defined development and sales milestones and pay royalties on net sales of osanetant over the royalty term. We plan to initially pursue development of osanetant as a potential treatment for iVMS.

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed by us in the reports that we file or submit to the SEC under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized, and reported within the time periods specified by the SEC’s rules and forms, and that information is accumulated and communicated to our management, including our principal executive officer and principal financial officer (whom we refer to in this periodic report as our Certifying Officers), as appropriate to allow timely decisions regarding required disclosure. Our management evaluated, with the participation of our Certifying Officers, the effectiveness of our disclosure controls and procedures as of June 30, 2020, pursuant to Rule 13a-15(b) under the Securities Exchange Act. Based upon that evaluation, our Certifying Officers concluded that, as of June 30, 2020, our disclosure controls and procedures were effective.

There were no changes in our internal control over financial reporting that occurred during our most recently completed fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

From time to time, we may be involved various claims and legal proceedings relating to claims arising out of its operations.

See Note 6 to our unaudited condensed financial statements included in this report for a description of our litigation with Piper Sandler & Co. and a putative securities class action and stockholder derivative suit complaints filed against us.

Investing in our securities involves a high degree of risk. You should consider the following risk factors, as well as other information contained or incorporated by reference in this report, before deciding to invest in our securities. The following factors affect our business, our intellectual property, the industry in which we operate and our securities. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties not presently known or which we consider immaterial as of the date hereof may also have an adverse effect on our business. If any of the matters discussed in the following risk factors were to occur, our business, financial condition, results of operations, cash flows or prospects could be materially adversely affected, the market price of our securities could decline and you could lose all or part of your investment in our securities.

As of June 30, 2020, we had an accumulated deficit of $87.0 million, cash and cash equivalents of $5.9 million, and current liabilities of $3.0 million. Based on available resources, we believe that our cash and cash equivalents currently on hand combined with the funds raised subsequent to June 30, 2020 via the ATM and private placement transaction (“Private Placement”) are sufficient to fund our currently anticipated operating and capital requirements into the first quarter of 2021, excluding support for a planned emetine clinical trial. Thus, our current capital resources are not sufficient to fund our planned operations for the next 12 months from the date of the financial statements included in this report. Moreover, we have not established a source of revenue and we expect to continue to incur losses for the foreseeable future as we continue our development of, and seek marketing approvals for, our product candidates. These factors individually and collectively raise substantial doubt about our ability to continue as a going concern and therefore it may be more difficult for us to attract investors. Unless we are able to raise additional capital to finance our operations, our long-term business plan may not be accomplished, and we may be forced to cease, reduce, or delay operations. In their audit report in respect of our 2019 audited financial statements, our independent registered public accounting firm included in its report an explanatory paragraph indicating that the substantial doubt as to our ability to continue as a going concern is of fundamental importance to understanding our financial statements.

We will require additional financing to obtain marketing approval of our product candidates and, if approved, to commercialize our product candidates, and a failure to obtain this necessary capital when needed on acceptable terms, or at all, could force us to delay, limit, reduce or terminate our product development, other operations or commercialization efforts.

Since our inception, substantially all of our resources have been dedicated to the clinical development of our product candidates. As of June 30, 2020, we had an accumulated deficit of $87.0 million, cash and cash equivalents of $5.9 million and current liabilities of $3.0 million. As discussed above, we believe that our cash and cash equivalents currently on hand combined with the funds raised subsequent to June 30, 2020 via the ATM and Private Placement are sufficient to fund our anticipated operating and capital requirements into the first quarter of 2021, excluding support for a planned emetine clinical trial. Thus, our current capital resources are not sufficient to fund our planned operations for the next 12 months from the date of the financial statements included in this report.

We will need to raise additional capital in order to finance the completion of clinical development and regulatory preparedness of our product candidates, preparations for a commercial launch of our product candidates, if approved, and development of any other current or future product candidates we may choose to further develop. These expenditures will include costs associated with research and development, conducting preclinical studies and clinical trials, obtaining marketing approvals, and manufacturing and supply as well as marketing and selling any products approved for sale. In addition, other unanticipated costs may arise. Because the outcome of any drug development process is highly uncertain, we cannot reasonably estimate the actual amounts necessary to successfully complete the development and commercialization of our current product candidates, if approved, or future product candidates, if any.

Our operating plan may change as a result of factors currently unknown to us, and we may need to seek additional funds sooner than planned, through public or private equity or debt financings or other sources, such as non-dilutive funding or strategic collaborations. Such financing may result in dilution to stockholders, imposition of debt covenants and repayment obligations, or other restrictions that may adversely affect our business. In addition, we may seek additional capital due to favorable market conditions or strategic considerations even if we believe we have sufficient funds for our current or future operating plans.

Additional funds may not be available when we need them, on terms that are acceptable to us, or at all. If adequate funds are not available to us on a timely basis, we may be required to:

In light of the United States (“U.S.”) Food and Drug Administration’s (“FDA’s”) Complete Response Letter regarding our New Drug Application (“NDA”) for EDSIVO™, we halted precommercial activities while we work toward our goal of approval for EDSIVO™. We may decide at any time not to continue development of EDSIVO™.

Our recent business priority has been premised upon the approval and commercial success of EDSIVO^TM. In June 2019, we received a Complete Response Letter from the FDA regarding our NDA for EDSIVO^TM (celiprolol) for the treatment of vascular Ehlers-Danlos syndrome (“vEDS”). The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of certain clinical events in patients with vEDS. We had previously devoted a substantial majority of our research, development, clinical, and precommercial efforts and financial resources towards the development of EDSIVO™. In order to reduce operating expenses and conserve cash resources, in June 2019, we implemented a corporate restructuring which included a reduction of approximately 60% of our full-time workforce of 48 employees and halted precommercial activities for EDSIVO^TM. In December 2019, we submitted a Formal Dispute Resolution Request to the Office of New Drugs appealing the FDA’s decision as outlined in the Complete Response Letter. In March 2020, we received a response to our Formal Dispute Resolution Request from the Office of New Drugs of the FDA stating that it had denied our appeal of the Complete Response Letter in relation to the NDA for EDSIVO^TM. In its Appeal Denied letter, the Office of New Drugs described possible paths forward for us to explore that could provide the substantial evidence of effectiveness needed to support a potential resubmission of the EDSIVO^TM NDA for the treatment of patients with vEDS with a confirmed COL3A1 mutation. In its Appeal Denied letter, the Office of New Drugs referred to the FDA Guidance document issued in December 2019, where substantial evidence of effectiveness can be provided by two or more adequate and well-controlled studies demonstrating efficacy, or a single positive adequate and well-controlled study plus confirmatory evidence. While neither resubmission nor the prospect of approval of the

EDSIVO^TM NDA is assured, we are evaluating our possible next steps with the goal of resubmission of the EDSIVO^TM NDA. We may decide at any time not to continue development of EDSIVO^TM, which could have a material adverse effect on our business operations and financial prospects.

Funding from our purchase agreement with Lincoln Park may be limited or be insufficient to fund our operations or implement our strategy.

Under our purchase agreement with Lincoln Park, we may direct Lincoln Park to purchase up to $15.0 million of shares of our common stock, subject to certain limitations and conditions, over a 36-month period commencing on June 8, 2020. There can be no assurance that we will be able to receive any or all of the funds from Lincoln Park because the purchase agreement contains limitations, restrictions, requirements, events of default and other provisions that could limit our ability to cause Lincoln Park to buy common stock from us, including that Lincoln Park own no more than 9.99% of our common stock. In addition, under the applicable rules of the Nasdaq Capital Market, if we seek to issue shares in excess of 19.99% of the total common stock outstanding as of the date we entered into the purchase agreement, we may be required to seek stockholder approval in order to be in compliance with the Nasdaq Capital Market rules. Our inability to access a portion or the full amount available under the purchase agreement, in the absence of any other financing sources, could have a material adverse effect on our business.

The extent to which we rely on Lincoln Park as a source of funding will depend on a number of factors, including the amount of working capital needed, the prevailing market price of our common stock and the extent to which we are able to secure working capital from other sources. If obtaining sufficient funding from Lincoln Park were to prove unavailable or prohibitively dilutive, we would need to secure another source of funding in order to satisfy our working capital needs. Even if we were to receive all $15.0 million in gross proceeds under the purchase agreement with Lincoln Park, we may still need additional capital to fully implement our business, operating and development plans. Should the financing we require to sustain our working capital needs be unavailable or prohibitively expensive when we require it, the consequences could be a material adverse effect on our business, operating results, financial condition and prospects.

Funding from our ATM facility may be insufficient to fund our operations or to implement our strategy.

We will need to keep current our shelf registration statement and an offering prospectus relating to our at-the-market (“ATM”) facility with JonesTrading Institutional Services LLC (“JonesTrading”) and Roth Capital Partners, LLC (“Roth Capital”) in order to use the program to sell shares of our common stock, as well as provide certain periodic deliverables required by the amended and restated sales agreement with JonesTrading and Roth Capital for the ATM facility. Due to the SEC’s “baby shelf rules,” which prohibit companies with a public float of less than $75 million from issuing securities under a shelf registration statement in excess of one-third of such company’s public float in a 12-month period, we are only able to issue a limited number of shares which aggregate to no more than one-third of our public float using our shelf registration statement at this time. During the quarter ended June 30, 2020 and subsequent to the quarter-end through August 6, 2020, we sold an aggregate of 1,418,551 shares of common stock under our ATM facility. These sales of common stock are counted toward the maximum of one-third of our public float that can be sold in a 12-month period and reduce the remaining shares available to sell under our ATM facility during that 12-month period. The number of shares and price at which we may be able to sell shares under the ATM facility may be limited due to market conditions and other factors beyond our control.

We have a limited operating history and have incurred significant losses since our inception and anticipate that we will continue to incur losses for the foreseeable future and may never achieve or maintain profitability. The absence of any commercial sales and our limited operating history make it difficult to assess our future viability.

We are a development-stage pharmaceutical company with a limited operating history and a history of losses. Pharmaceutical product development is a highly speculative undertaking and involves a substantial degree of risk. We are focused principally on repurposing and/or reformulating existing drugs for serious rare and life-threatening diseases with significant unmet medical needs. We are not profitable and have incurred losses in each year since inception. We have only a limited operating history upon which you can evaluate our business and prospects. In addition, we have limited experience and have not yet demonstrated an ability to successfully overcome many of the risks and uncertainties frequently encountered by companies in new and rapidly evolving fields, particularly in the pharmaceutical industry. We have not generated any revenue to date. We continue to incur significant research and development and other expenses related to our ongoing operations. Our net loss for the six months ended June 30, 2020 was $10.7 million. As of June 30, 2020, we had an accumulated deficit of $87.0 million. We expect to continue to incur losses for the foreseeable future as we continue our development of, and seek marketing approvals for, our product candidates.

We have devoted substantially all of our financial resources to identify, acquire, and develop our product candidates, including providing general and administrative support for our operations. To date, we have financed our operations primarily through the sale of equity securities and convertible promissory notes. The amount of our future net losses will depend, in part, on the rate of our future expenditures and our ability to obtain funding through public or private equity or debt financings, strategic collaborations, or

non-dilutive funding. Pharmaceutical product development is a highly speculative undertaking and involves a substantial degree of risk. We expect losses to increase as we conduct clinical trials and continue to develop our product candidates. We expect to invest significant funds into the research and development of our current product candidates to determine the potential to advance these product candidates to regulatory approval. We may also invest in acquiring or in-licensing additional product candidates to expand our pipeline.

If we obtain regulatory approval to market a product candidate, our future revenue will depend upon the size of any markets in which our product candidates may receive approval and our ability to achieve sufficient market acceptance, pricing, reimbursement from third-party payors, and adequate market share for our product candidates in those markets. Even if we obtain adequate market share for our product candidates, because the potential markets in which our product candidates may ultimately receive regulatory approval could be very small, we may never become profitable despite obtaining such market share and acceptance of our products.

We expect to continue to incur significant expenses and increasing operating losses for the foreseeable future, and our expenses will increase substantially if and as we:

Further, the net losses we incur will fluctuate significantly from quarter to quarter and year to year, such that a period-to-period comparison of our results of operations may not be a good indication of our future performance.

We currently have no source of product sales revenue and may never be profitable.

We have not generated any revenues from commercial sales of any of our current product candidates. Our ability to generate product revenue depends upon our ability to successfully identify, develop and commercialize these product candidates or other product candidates that we may develop, in-license or acquire in the future. Our ability to generate future product revenue from our current or future product candidates also depends on a number of additional factors, including our ability to:

In addition, because of the numerous risks and uncertainties associated with clinical product development, including that our product candidates may not successfully advance through development or achieve regulatory approval, we are unable to predict the timing or amount of any potential future product sales revenues. Our expenses also could increase beyond expectations if we decide to or are required by the FDA, or comparable foreign regulatory authorities, to perform studies or trials in addition to those that we currently anticipate.

Even if we complete the development and regulatory processes described above, we anticipate incurring significant costs associated with launching and commercializing these products.

We have incurred, and expect to continue to incur, increased costs and risks as a result of being a public company.

As a public company, we are required to comply with the Sarbanes-Oxley Act of 2002 (“SOX”), as well as rules and regulations implemented by the Securities and Exchange Commission (“SEC”) and The Nasdaq Capital Market (“Nasdaq”). Changes in the laws and regulations affecting public companies, including the provisions of SOX and rules adopted by the SEC and by Nasdaq, have resulted in, and will continue to result in, increased costs as we respond to their requirements. Given the risks inherent in the design and operation of internal controls over financial reporting, the effectiveness of our internal controls over financial reporting is uncertain. If our internal controls are not designed or operating effectively, we may not be able to conclude an evaluation of our internal control over financial reporting as required or we or our independent registered public accounting firm may determine that our internal control over financial reporting was not effective. We currently have a very limited workforce, and it may be difficult to adhere to appropriate internal controls over financial reporting or disclosure controls with such limited staffing. In addition, our independent registered public accounting firm may determine that our internal controls are not effective. Investors may lose confidence in the reliability of our financial statements, which could cause the market price of our common stock to decline and which could affect our ability to run our business effectively. Being a public company could also make it more difficult or more costly for us to obtain certain types of insurance, including directors’ and officers’ liability insurance. The impact of these events could also make it more difficult for us to attract and retain qualified persons to serve on our Board of Directors, our Board committees, and as executive officers.

If we fail to maintain proper and effective internal controls, our ability to produce accurate financial statements on a timely basis could be impaired.

We are subject to the reporting requirements of the Exchange Act, SOX and Nasdaq rules and regulations. SOX requires, among other things, that we maintain effective disclosure controls and procedures and internal controls over financial reporting. We must perform system and process evaluation and testing of our internal control over financial reporting to allow management to report on the effectiveness of our internal controls over financial reporting in our Annual Report on Form 10-K filing for that year, as required by Section 404 of SOX.

Although we are committed to continuing to improve our internal control processes, and although we will continue to diligently and vigorously review our internal controls over financial reporting, we cannot be certain that, in the future, a material weakness or significant deficiency will not exist or otherwise be discovered. We may discover weaknesses in our system of internal financial and accounting controls and procedures that could result in a material misstatement of our financial statements. Our internal control over financial reporting will not prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud will be detected.

If we are not able to comply with the requirements of Section 404 of SOX, or if we are unable to maintain proper and effective internal controls, we may not be able to produce timely and accurate financial statements. If that were to happen, the market price of our common stock could decline and we could be subject to penalties or investigations by Nasdaq or the SEC.

We face risks related to health epidemics which could adversely affect our business.

Our business could be materially adversely affected by the effects of a widespread outbreak of contagious disease, including the recent pandemic of COVID-19, a respiratory illness caused by a novel coronavirus. While our employees work remotely a large part of the time, these effects could include disruptions or restrictions on our employees’ ability to travel, as well as disruptions at or closures of our facilities or the facilities of our manufacturers and suppliers, which could adversely impact our development activities and other operations. Health professionals may reduce staffing and reduce or postpone meetings with clients, colleagues, and others in

response to the spread of an infectious disease. Such events may result in a period of business disruption, and in reduced operations, any of which could materially affect our business, financial condition, and results of operations. In addition, a significant outbreak of contagious diseases in the human population could result in a widespread health crisis that could adversely affect the economies and financial markets of many countries, resulting in an economic downturn that could adversely affect our manufacturers and suppliers and otherwise adversely impact our development activities and other operations.

With respect to the COVID-19 outbreak specifically, which is still currently evolving as of this time, much of its impact remains unknown and it is impossible to predict the impact it may have on our business. The outbreak could potentially affect the business of the FDA, European Medicines Agency (“EMA”) or other health authorities, which could result in delays in meetings related to our product candidates and our planned clinical trials and ultimately in the review and approval of our product candidates. The spread of COVID-19 may also slow potential enrollment of clinical trials and reduce the number of eligible patients for our clinical trials. Prolonged disruptions to businesses, manufacturing and supply chain, including shelter-in-place or similar orders imposed by federal, state or local government authorities, and economic downturns can lead to materially adverse effects on our business operations, including layoffs and/or suspension of our business operations. The COVID-19 outbreak and mitigation measures also have had and may continue to have an adverse impact on global economic conditions which could have an adverse effect on our business and financial condition, including impairing our ability to raise capital when and in the amount needed. Although, as of the date of this Quarterly Report on Form 10-Q, we do not expect any material impact on our long-term activity, the extent to which COVID-19 impacts our business will depend on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of COVID-19 and the actions to contain COVID-19 or treat its impact, among others. In addition, any COVID-19 infection of any of our employees could have a significant impact on our ability to conduct business.

We face competitive and other risks in our emetine program aimed at a therapeutic treatment for COVID-19.

We have recently announced a new development program for emetine in the treatment of certain patients with COVID-19. This disease is extremely challenging and has only recently emerged as the product of a novel coronavirus known as SARS-CoV2. There are numerous challenges associated with development of a therapeutic for a viral disease which is not yet well understood. In addition, there are many companies addressing COVID-19, both in therapeutic treatment and vaccines, many of which have significantly greater resources and capital than we do. The competition for funding research and development in this disease is intense and there can be no assurance that we will be able to obtain adequate financing to carry out our development plan or that, even if funding is obtained, our development of emetine will be successful, timely, and accepted by appropriate regulatory authorities.

Any acquisitions that we make could disrupt our business and harm our financial condition.

We expect to evaluate potential strategic acquisitions of complementary businesses, products or technologies worldwide. We may also consider joint ventures, licensing and other collaborative projects. We may not be able to identify appropriate acquisition candidates or strategic partners, or successfully negotiate, finance or integrate acquisitions of any businesses, products or technologies. Furthermore, the integration of any acquisition and management of any collaborative project may divert our management’s time and resources from our core business and disrupt our operations. As a company, we have limited experience with acquiring other companies, or with acquiring products outside of the U.S. Any cash acquisition we pursue would divert the cash we have on our balance sheet from our present clinical development programs. Any stock acquisitions would dilute our stockholders’ ownership.

Risks Related to the Clinical Development and Marketing Approval of Our Product Candidates

The marketing approval processes of the FDA and comparable foreign authorities are lengthy, time-consuming and inherently unpredictable, and if we are ultimately unable to obtain marketing approval for our product candidates, our business will be substantially harmed.

None of our current product candidates have gained marketing approval for sale in the U.S. or any other country, and we cannot guarantee that we will ever have marketable products. Our business is substantially dependent on our ability to complete the development of, obtain marketing approval for, and successfully commercialize our product candidates in a timely manner. We cannot commercialize our product candidates in the U.S. without first obtaining approval from the FDA to market each product candidate. Similarly, we cannot commercialize our product candidates outside of the U.S. without obtaining regulatory approval from comparable foreign regulatory authorities. Our product candidates could fail to receive marketing approval for many reasons, including the following:

Before obtaining marketing approval for the commercial sale of any drug product for a target indication, we must demonstrate in preclinical studies and well-controlled clinical trials and, to the satisfaction of the applicable regulatory authorities, that the product is safe and effective for its intended use and that the manufacturing facilities, processes, and controls are adequate to preserve the drug’s identity, strength, quality and purity. In the U.S., it is necessary to submit and obtain approval of an NDA from the FDA. An NDA must include extensive preclinical and clinical data and supporting information to establish the product safety and efficacy for each desired indication. The NDA must also include significant information regarding the chemistry, manufacturing, and controls for the product. After the submission but before approval of the NDA, the manufacturing facilities used to manufacture a product candidate must be inspected by the FDA to ensure compliance with the applicable Current Good Manufacturing Practice (“cGMP”) requirements. The FDA and the Competent Authorities of the Member States of the European Economic Area (“EEA”) and comparable foreign regulatory authorities, may also inspect our clinical trial sites and audit clinical study data to ensure that our studies are properly conducted in accordance with the IND regulations, human subject protection regulations, and current good clinical practice (“cGCP”).

Obtaining approval of an NDA is a lengthy, expensive and uncertain process, and approval may not be obtained. Upon submission of an NDA, the FDA must make an initial determination that the application is sufficiently complete to accept the submission for filing. We cannot be certain that any submissions, even those that are accepted for filing and reviewed by the FDA, will ultimately be approved. If the application is not accepted for review, the FDA may require that we conduct additional clinical studies or preclinical testing or take other actions before it will reconsider our application. If the FDA requires additional studies or data, we would incur increased costs and delays in the marketing approval process, which may require us to expend more resources than we have available. In addition, the FDA may not consider any additional information to be complete or sufficient to support the filing or approval of the NDA.

Regulatory authorities outside of the U.S., such as in Europe and Japan and in emerging markets, also have requirements for approval of drugs for commercial sale with which we must comply prior to marketing in those areas. Regulatory requirements can vary widely from country to country and could delay or prevent the introduction of our product candidates. Clinical trials conducted in one country may not be accepted or the results may not be found adequate by regulatory authorities in other countries, and obtaining regulatory approval in one country does not mean that regulatory approval will be obtained in any other country. However, the failure to obtain regulatory approval in one jurisdiction could have a negative impact on our ability to obtain approval in a different jurisdiction. Approval processes vary among countries and can involve additional product candidate testing and validation and additional administrative review periods. Seeking foreign regulatory approval could require additional non-clinical studies or clinical

trials, which could be costly and time-consuming. Foreign regulatory approval may include all of the risks associated with obtaining FDA approval. For all of these reasons, we may not obtain foreign regulatory approvals on a timely basis, if at all.

The process to develop, obtain marketing approval for, and commercialize product candidates is long, complex and costly, both inside and outside of the U.S., and approval is never guaranteed. The time required to obtain approval by the FDA and comparable foreign authorities is unpredictable but typically takes many years following the commencement of clinical trials and depends upon numerous factors, including the substantial discretion of the regulatory authorities. In addition, approval policies, regulations, or the type and amount of clinical data necessary to gain approval may change during the course of a product candidate’s clinical development and may vary among jurisdictions. Even if our product candidates were to successfully obtain approval from regulatory authorities, any such approval might significantly limit the approved indications for use, including more limited patient populations, require that precautions, warnings or contraindications be included on the product labeling, including black box warnings, require expensive and time-consuming post-approval clinical studies, risk evaluation and mitigation strategies or surveillance as conditions of approval, or, through the product label, the approval may limit the claims that we may make, which may impede the successful commercialization of our product candidates. Following any approval for commercial sale of our product candidates, certain changes to the product, such as changes in manufacturing processes and additional labeling claims, as well as new safety information, may require new studies and will be subject to additional FDA notification, or review and approval. Also, marketing approval for any of our product candidates may be withdrawn. If we are unable to obtain marketing approval for our product candidates in one or more jurisdictions, or any approval contains significant limitations, our ability to market to our full target market will be reduced and our ability to realize the full market potential of our product candidates will be impaired. Furthermore, we may not be able to obtain sufficient funding or generate sufficient revenue and cash flows to continue or complete the development of any of our current or future product candidates.

If we are unable to obtain approval under Section 505(b)(2) of the FFDCA or if we are required to generate additional data related to safety or efficacy in order to obtain approval under Section 505(b)(2), we may be unable to meet our anticipated development and commercialization timelines.

Traditional drug development typically relies upon Section 505(b)(1) of the FFDCA for seeking marketing authorization in the U.S., where the sponsor of the product candidate (i.e., the applicant for marketing authorization) is required to conduct all of the studies needed to demonstrate the safety and efficacy of such candidate. Although we may consider a Section 505(b)(1) pathway in the future, our current strategy for seeking marketing authorization in the U.S. for our product candidates (including ACER-001 and EDSIVO™) relies at least in part on Section 505(b)(2) of the FFDCA, which permits use of a marketing application, referred to as a 505(b)(2) application, where at least some of the information needed to demonstrate the safety and efficacy of the product candidate at issue for approval comes from studies not conducted by or for the applicant and for which the applicant has not obtained a right of reference or use. The FDA interprets this to mean that an applicant may rely for approval on such data as that found in published literature or the FDA’s finding of safety or effectiveness, or both, of a previously approved drug product owned by a third party. There is no assurance that the FDA would find third-party data relied upon by us in a 505(b)(2) application sufficient or adequate to support approval, and the FDA may require us to generate additional data to support the safety and efficacy of our product candidates. In June 2019, we received a Complete Response Letter from the FDA regarding our NDA for EDSIVO™ for the treatment of vEDS. The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. In light of the Complete Response Letter, we have currently halted precommercial activities for EDSIVO™ as part of a corporate restructuring initiative. We may need to conduct substantial new research and development activities beyond those we currently plan to conduct. Such additional new research and development activities would be costly and time-consuming and there is no assurance that such data generated from such additional activities would be sufficient to obtain approval.

If the data to be relied upon in a 505(b)(2) application are related to drug products previously approved by the FDA and covered by patents that are listed in the FDA’s Orange Book, we would be required to submit with our 505(b)(2) application a Paragraph IV Certification in which we must certify that we do not infringe the listed patents or that such patents are invalid or unenforceable, and provide notice to the patent owner or the holder of the approved NDA. The patent owner or NDA holder would have 45 days from receipt of the notification of our Paragraph IV Certification to initiate a patent infringement action against us. If an infringement action is initiated, the approval of our NDA would be subject to a stay of up to 30 months or more while we defend against such a suit. Approval of our product candidates under Section 505(b)(2) may, therefore, be delayed until patent exclusivity expires or until we successfully challenge the applicability of those patents to our product candidates. Alternatively, we might elect a Section 505 (b)(1) pathway to generate sufficient clinical data so that we would no longer need to rely on third-party data. However, a Section 505 (b)(1) pathway would likely be costly and time-consuming and there would be no assurance that such data generated from such additional activities would be sufficient to obtain approval.

We may not be able to obtain shortened review of our applications, and the FDA may not agree that our product candidates qualify for marketing approval. If we are required to generate additional data to support approval, we may be unable to meet anticipated or reasonable development and commercialization timelines, may be unable to generate the additional data at a reasonable cost, or at all, and may be unable to obtain marketing approval of our product candidates. If the FDA changes its interpretation of

Section 505(b)(2) allowing reliance on data in a previously approved drug application owned by a third party, or if there is a change in the law affecting Section 505(b)(2), this could delay or even prevent the FDA from approving any Section 505(b)(2) application that we submit.

Marketing approval may be substantially delayed or may not be obtained for one or all of our product candidates if regulatory authorities require additional or more time-consuming studies to assess the safety and efficacy of our product candidates.

We may be unable to initiate or complete development of our product candidates on schedule, if at all. The completion of the studies for certain of our product candidates will require us to obtain substantial additional funding beyond our current resources. In addition, regulatory authorities may require additional or more time-consuming studies to assess the safety or efficacy of our product candidates than we are currently planning. In June 2019, we received a Complete Response Letter from the FDA regarding our NDA for EDSIVO™ for the treatment of vEDS. The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. In light of the Complete Response Letter, we have currently halted precommercial activities for EDSIVO™ as part of a corporate restructuring initiative. We currently do not have, and may not be able to obtain, adequate funding to complete the necessary steps for approval for any or all of our product candidates. Additional delays may result if the FDA, an FDA Advisory Committee (if one is convened to review any NDA we file) or another regulatory authority indicates that a product candidate should not be approved or there should be restrictions on approval, such as the requirement for a Risk Evaluation and Mitigation Strategy (“REMS”), to ensure the safe use of the drug. Delays in marketing approval or rejections of applications for marketing approval in the U.S. or other markets may result from many factors, including:

The lengthy and unpredictable approval process, as well as the unpredictability of future clinical trial results, may result in our failure to obtain marketing approval to market our product candidates, which would significantly harm our business, results of operations and prospects.

Clinical drug development involves a lengthy and expensive process with an uncertain outcome.

Clinical testing is expensive and can take many years to complete, and its outcome is inherently uncertain. The FDA and comparable foreign regulatory authorities have substantial discretion in the approval process and determining when or whether marketing approval will be obtained for our current product candidates. Even if we believe the data collected from clinical trials of our current product candidates are promising, such data may not be sufficient to support approval by the FDA or comparable foreign authorities. Our future clinical trial results may not be successful.

It is impossible to predict the extent to which the clinical trial process may be affected by legislative and regulatory developments. Due to these and other factors, our current product candidates or future product candidates could take a significantly longer time to gain marketing approval than expected or may never gain marketing approval. This could delay or eliminate any potential product revenue by delaying or terminating the potential commercialization of our current product candidates.

Preclinical trials must also be conducted in accordance with FDA and comparable foreign authorities’ legal requirements, regulations or guidelines, including current Good Laboratory Practice (“cGLP”), an international standard meant to harmonize the conduct and quality of nonclinical studies and the archiving and reporting of findings. Preclinical studies including long-term toxicity studies and carcinogenicity studies in animals may result in findings that may require further evaluation, which could affect the risk-benefit evaluation of clinical development, or which may lead the regulatory agencies to delay, prohibit the initiation of or halt clinical trials or delay or deny marketing authorization applications. Failure to adhere to the applicable cGLP standards or misconduct during the course of preclinical trials may invalidate the data and require one or more studies to be repeated or additional testing to be conducted.

Clinical trials must also be conducted in accordance with FDA and comparable foreign authorities’ legal requirements, regulations or guidelines, including human subject protection requirements and cGCP. Clinical trials are subject to further oversight by these governmental agencies and Institutional Review Boards (“IRBs”), at the medical institutions where the clinical trials are conducted. In addition, clinical trials must be conducted with supplies of our current product candidates produced under cGMP and other requirements. Our clinical trials are conducted at multiple sites, including some sites in countries outside the U.S. and the European Union, which may subject us to further delays and expenses as a result of increased shipment costs, additional regulatory requirements and the engagement of foreign and non-EU clinical research organizations, as well as expose us to risks associated with clinical investigators who are unknown to the FDA or the European regulatory authorities, and with different standards of diagnosis, screening and medical care.

The commencement and completion of clinical trials for our current product candidates may be delayed, suspended or terminated as a result of many factors, including but not limited to:

Patient enrollment is a significant factor in the timing of clinical trials and is affected by many factors, including the size and nature of the patient population, the proximity of patients to clinical sites, the eligibility criteria for the trial, the design of the clinical trial, competing clinical trials and clinicians’ and patients’ perceptions as to the potential advantages of the drug being studied in relation to other available therapies, including any new drugs or treatments that may be approved for the indications we are investigating.

There are significant requirements imposed on us and on clinical investigators who conduct clinical trials that we sponsor. Although we are responsible for selecting qualified clinical investigators, providing them with the information they need to conduct the clinical trial properly, ensuring proper monitoring of the clinical trial, and ensuring that the clinical trial is conducted in accordance with the general investigational plan and protocols contained in the IND, we cannot ensure the clinical investigators will maintain compliance with all regulatory requirements at all times. The pharmaceutical industry has experienced cases where clinical investigators have been found to incorrectly record data, omit data, or even falsify data. We cannot ensure that the clinical investigators in our trials will not make mistakes or otherwise compromise the integrity or validity of data, any of which would have a significant negative effect on our ability to obtain marketing approval, our business, and our financial condition.

We could encounter delays if a clinical trial is suspended or terminated by us, by the IRBs of the institutions in which such trial is being conducted, by the data safety monitoring board (“DSMB”) for such trial, or by the FDA or comparable foreign regulatory authorities. We or such authorities may impose a suspension or termination due to a number of factors, including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by the FDA or comparable foreign regulatory authorities resulting in the imposition of a clinical hold, safety issues or adverse side effects, failure to demonstrate a benefit from using the drug, changes in governmental regulations or administrative actions or lack of adequate funding to continue the clinical trial. If we experience delays in the completion or termination of any clinical trial of our current product candidates, the commercial prospects of our current product candidates will be harmed, and our ability to generate product revenues from our product candidates will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow our development and approval process and jeopardize our ability to commence product sales and generate revenues. Many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of marketing approval of our product candidates.

Any of these occurrences could materially adversely affect our business, financial condition, results of operations, and prospects. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of marketing approval of our current product candidates. Significant clinical trial delays could also allow our competitors to bring products to market before we are able to do so, shorten any periods during which we have the exclusive right to commercialize our current product candidates and impair our ability to commercialize our current product candidates, which may harm our business, financial condition, results of operations, and prospects.

Clinical failure can occur at any stage of clinical development. Because the results of earlier clinical trials are not necessarily predictive of future results, any product candidate we advance through clinical trials may not have favorable results in later clinical trials or receive marketing approval.

Clinical failure can occur at any stage of our clinical development. The results of preclinical studies and early clinical trials of our product candidates may not be predictive of the results of later-stage clinical trials. Product candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of companies in the pharmaceutical industry have suffered significant setbacks in advanced clinical trials due to lack of efficacy or adverse safety profiles, notwithstanding promising results in earlier trials. Clinical trials may produce negative or inconclusive results, and we may decide, or regulators may require us, to conduct additional clinical or preclinical testing. Data obtained from tests are susceptible to varying interpretations, and regulators may not interpret our data as favorably as we do, which may delay, limit or prevent marketing approval.

In addition, the design of a clinical trial can determine whether our results will support approval of a product or approval of a product for desired indications, and flaws or shortcomings in the design of a clinical trial may not become apparent until the clinical trial is well advanced. As an organization, we have completed a single clinical trial and have limited experience in designing clinical trials and thus may be unable to design and execute a clinical trial to support marketing approval for our desired indications. Further, clinical trials of potential products often reveal that it is not practical or feasible to continue development efforts. If one of our product candidates is found to be unsafe or lack efficacy, we will not be able to obtain marketing approval for it and our business would be harmed. For example, if the results of our clinical trials of our product candidates do not achieve pre-specified endpoints or we are unable to provide primary or secondary endpoint measurements deemed acceptable by the FDA or comparable foreign regulators or if we are unable to demonstrate an acceptable level of safety relative to the efficacy associated with our proposed indications, the prospects for approval of our product candidates would be materially and adversely affected. A number of companies in the pharmaceutical industry, including those with greater resources and experience than us, have suffered significant setbacks in Phase 2 and Phase 3 clinical trials, even after seeing promising results in earlier clinical trials.

In some instances, there can be significant variability in safety and/or efficacy results between different trials of the same product candidate due to numerous factors, including differences in trial protocols and design, the size and type of the patient population, adherence to the dosing regimen and the rate of dropout among clinical trial participants. We do not know whether any clinical trials we may conduct will demonstrate consistent and/or adequate efficacy and safety to obtain marketing approval for our product candidates.

As an organization, we have completed a single clinical trial and may be unable to continue to do so efficiently or at all for our current product candidates or any product candidate we develop.

We will need to conduct clinical trials of our product candidates, with the exception of EDSIVO^TM, for which we do not presently intend to conduct additional clinical trials. The conduct of clinical trials and the submission of a successful NDA is a complicated process. As an organization, we have completed a single clinical trial, and we have limited experience in preparing and submitting regulatory filings. Consequently, we may be unable to successfully and efficiently execute and complete necessary clinical trials in a way that leads to NDA submission and approval of our current product candidates or for any other product candidate we develop. We may require more time and incur greater costs than anticipated and may not succeed in obtaining marketing approval of the product candidates we develop. Failure to commence or complete, or delays in, our planned clinical trials would prevent us from or delay us in commercializing our current product candidates or any other product candidate we develop.

Our product candidates may cause undesirable adverse effects or have other properties that could delay or prevent their marketing approval, limit the commercial profile of an approved label, or result in significant negative consequences following marketing approval, if obtained.

Undesirable side effects caused by our product candidates could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of marketing approval by the FDA or other comparable foreign authorities. If any of our current product candidates or any other product candidate we develop is associated with serious adverse, undesirable or unacceptable side effects, we may need to abandon such candidate’s development or limit development to certain uses or subpopulations in which such side effects are less prevalent, less severe or more acceptable from a risk-benefit perspective. Many compounds that initially showed promise in early-stage or clinical testing have later been found to cause side effects that prevented further development of the compound. Results of our trials could reveal a high and unacceptable prevalence of these or other side effects. In such an event, our trials could be suspended or terminated, and the FDA or comparable foreign regulatory authorities could order us to cease further development of or deny approval of our product candidates for any or all targeted indications. The drug-related side effects could affect patient recruitment or the ability of enrolled patients to complete the trial or result in potential product liability claims.

If our product candidates receive marketing approval, and we or others later identify undesirable side effects caused by such products, a number of potentially significant negative consequences could result, including:

Any of these events could prevent us from achieving or maintaining market acceptance of our product candidates, if approved, and could materially adversely affect our business, financial condition, results of operations and prospects.

Even if we receive marketing approval for our product candidates, such approved products will be subject to ongoing obligations and continued regulatory review, which may result in significant additional expense. Additionally, our product candidates, if approved, could be subject to labeling and other restrictions, and we may be subject to penalties and legal sanctions if we fail to comply with regulatory requirements or experience unanticipated problems with our approved products.

If the FDA approves any of our product candidates, the manufacturing processes, labeling, packaging, distribution, adverse event reporting, storage, advertising, promotion and recordkeeping for the product will be subject to extensive and ongoing regulatory requirements. These requirements include submissions of safety and other post-marketing information and reports, registration, as well as continued compliance with cGMP regulations and GCP for any clinical trials that we conduct post-approval. Any marketing approvals that we receive for our product candidates may also be subject to limitations on the approved indicated uses for which the product may be marketed or to conditions of approval, or contain requirements for potentially costly post-marketing testing, including Phase 4 clinical trials, and surveillance to monitor safety and efficacy.

Later discovery of previously unknown problems with an approved product, including adverse events of unanticipated severity or frequency, or with manufacturing operations or processes, or failure to comply with regulatory requirements, or evidence of acts that raise questions about the integrity of data supporting the product approval, may result in, among other things:

The FDA’s policies may change and additional government regulations may be enacted that could prevent, limit or delay marketing approval, manufacturing or commercialization of our product candidates. We cannot predict the likelihood, nature or extent of government regulation that may arise from future legislation or administrative action, either in the U.S. or abroad. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or we are not able to maintain regulatory compliance, we may lose any marketing approval that may have been obtained and we may not achieve or sustain profitability, which would adversely affect our business.

Agencies such as the FDA and national competition regulators in European countries regulate the promotion and uses of drugs not consistent with approved product labeling requirements. If we are found to have improperly promoted our current product candidates for uses beyond those that are approved, we may become subject to significant liability.

Regulatory authorities such as the FDA and national competition agencies in Europe strictly regulate the promotional claims that may be made about prescription products, such as emetine, ACER-001, EDSIVO^TM, or osanetant, if approved. In particular, a product may not be promoted for uses that are not approved by the FDA or comparable foreign regulatory authorities as reflected in the product’s approved labeling, known as “off-label” use, nor may it be promoted prior to obtaining marketing approval. If we receive marketing approval for our product candidates for our proposed indications, physicians may nevertheless use our products for their patients in a manner that is inconsistent with the approved label if the physicians personally believe in their professional medical judgment it could be used in such manner. Although physicians may prescribe legally available drugs for off-label uses, manufacturers may not market or promote such off-label uses.

In addition, the FDA requires that promotional claims not be “false or misleading” as such terms are defined in the FDA’s regulations. For example, the FDA requires substantial evidence, which generally consists of two adequate and well-controlled head-to-head clinical trials, for a company to make a claim that its product is superior to another product in terms of safety or effectiveness. Generally, unless we perform clinical trials meeting that standard comparing our product candidates to competitive products and these claims are approved in our product labeling, we will not be able promote our current product candidates as superior to other products. If we are found to have made such claims, we may become subject to significant liability. In the U.S., the federal government has levied large civil and criminal fines against companies for alleged improper promotion and has enjoined several companies from engaging in improper promotion. The FDA has also requested that companies enter into consent decrees or corporate integrity agreements. The FDA could also seek permanent injunctions under which specified promotional conduct is monitored, changed or curtailed.

Our current and future relationships with healthcare professionals, investigators, consultants, collaborators, actual customers, potential customers and third-party payors in the U.S. and elsewhere may be subject, directly or indirectly, to applicable anti-kickback, fraud and abuse, false claims, physician payment transparency, health information privacy and security and other healthcare laws and regulations, which could expose us to sanctions.

Healthcare providers, physicians and third-party payors in the U.S. and elsewhere will play a primary role in the recommendation and prescription of any drug candidates for which we obtain marketing approval. Our current and future arrangements with healthcare professionals, investigators, consultants, collaborators, actual customers, potential customers and third-party payors may expose us to broadly applicable fraud and abuse and other healthcare laws, including, without limitation, the federal Anti-Kickback Statute and the federal False Claims Act, that may constrain the business or financial arrangements and relationships through which we sell, market and distribute any drug candidates for which we obtain marketing approval. In addition, we may be subject to physician payment transparency laws and patient privacy and security regulation by the U.S. federal government and states and by the foreign jurisdictions in which we conduct our business. The applicable federal, state and foreign healthcare laws that may affect our ability to operate include the following:

Further, the Affordable Care Act, among other things, amended the intent requirement of the federal Anti-Kickback Statute and certain criminal statutes governing healthcare fraud. A person or entity no longer needs to have actual knowledge of the statute or specific intent to violate it. In addition, the Affordable Care Act provided that the government may assert that a claim including items or services resulting from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the False Claims Act.

Efforts to ensure that our future business arrangements with third parties will comply with applicable healthcare laws and regulations may involve substantial costs. It is possible that governmental authorities will conclude that our business practices may not comply with current or future statutes, regulations or case law involving applicable fraud and abuse or other healthcare laws. If our operations are found to be in violation of any of these laws or any other governmental regulations that may apply to us, we may be subject to significant civil, criminal and administrative penalties, including, without limitation, damages, fines, imprisonment, exclusion from participation in government healthcare programs, such as Medicare and Medicaid, and the curtailment or restructuring of our operations, which could significantly harm our business. If any of the physicians or other healthcare providers or entities with whom we expect to do business, including our current and future collaborators, if any, are found not to be in compliance with applicable laws, those persons or entities may be subject to criminal, civil or administrative sanctions, including exclusion from participation in government healthcare programs, which could also affect our business.

The impact of recent healthcare reform legislation and other changes in the healthcare industry and healthcare spending on us is currently unknown and may adversely affect our business model.

In the U.S. and some foreign jurisdictions, legislative and regulatory changes and proposed changes regarding the healthcare system could prevent or delay marketing approval of our drug candidates, restrict or regulate post-approval activities and affect our ability to profitably sell any drug candidates for which we obtain marketing approval.

Our revenue prospects could be affected by changes in healthcare spending and policy in the U.S. and abroad. We operate in a highly regulated industry and new laws and judicial decisions, or new interpretations of existing laws or decisions, related to healthcare availability, the method of delivery or payment for healthcare products and services could negatively impact our business, financial condition, results of operations and prospects. There is significant interest in promoting healthcare reform, as evidenced by the enactment in the U.S. of the Affordable Care Act. Among other things, the Affordable Care Act contains provisions that may reduce the profitability of drug products, including, for example, revising the methodology by which rebates owed by manufacturers for covered outpatient drugs under the Medicaid Drug Rebate Program are calculated, extending the Medicaid Drug Rebate Program to utilization of prescriptions of individuals enrolled in Medicaid managed care plans, imposing mandatory discounts for certain Medicare Part D beneficiaries, and subjecting drug manufacturers to payment of an annual fee.

We expect that the Affordable Care Act, as well as other healthcare reform measures that may be adopted in the future, may result in more rigorous coverage criteria and in additional downward pressure on the price that we receive for any approved product. Any reduction in reimbursement from Medicare or other government programs may result in a similar reduction in payments from private payors. The implementation of cost containment measures or other healthcare reforms may prevent us from being able to generate revenue or commercialize our drugs.

It is likely that federal and state legislatures within the U.S. and foreign governments will continue to consider changes to existing healthcare legislation including the Affordable Care Act. We cannot predict the reform initiatives that may be adopted in the future or whether initiatives that have been adopted will be repealed or modified. The continuing efforts of the government, insurance companies, managed care organizations and other payors of healthcare services to contain or reduce costs of healthcare may adversely affect:

If we fail to comply with environmental, health and safety laws and regulations, we could become subject to fines or penalties or incur costs that could have a material adverse effect on our business, financial condition or results of operations.

Our research and development activities and our third-party manufacturers’ and suppliers’ activities involve the controlled storage, use, and disposal of hazardous materials, including the components of our product candidates and other hazardous compounds. We and our manufacturers and suppliers are subject to laws and regulations governing the use, manufacture, storage, handling, and disposal of these hazardous materials. In some cases, these hazardous materials and various wastes resulting from their use are stored at our and our manufacturers’ facilities pending their use and disposal. We cannot eliminate the risk of contamination, which could cause an interruption of our commercialization efforts, research and development efforts and business operations, environmental damage resulting in costly clean-up and liabilities under applicable laws and regulations governing the use, storage, handling, and disposal of these materials and specified waste products. Although we believe that the safety procedures utilized by us and our third-party manufacturers for handling and disposing of these materials generally comply with the standards prescribed by these laws and regulations, we cannot guarantee that this is the case or eliminate the risk of accidental contamination or injury from these materials. In such an event, we may be held liable for any resulting damages and such liability could exceed our resources and state or federal or other applicable authorities may curtail our use of specified materials and/or interrupt our business operations. Furthermore, environmental laws and regulations are complex, change frequently, and have tended to become more stringent. We cannot predict the impact of such changes and cannot be certain of our future compliance. We do not currently carry biological or hazardous waste insurance coverage.

Our risk of delay in product approvals is increased if the U.S. government is fully or partially shut down due to lack of continuity in funding.

Our business operations are directly and indirectly affected by the operations of the U.S. government, including but not limited to the FDA. Any interruption in the continuity of funding of all or a part of government activities could have a significant negative effect on our business, including the timing of that review decision. For example, over the last several years, including beginning on December 22, 2018 and ending on January 25, 2019, the U.S. government has had shutdowns. We cannot predict the likelihood, duration, impact, or timing of any future shutdown. There can be no assurance that if such shutdown(s) were to occur in the future, adequate funds would be available to the FDA and other U.S. government agencies to allow them to continue their activities uninterrupted. Even when funding is restored following one or more shutdowns, we cannot predict the ongoing impact of such shutdowns on our business, or the degree to which funding would be restored to the FDA or other agencies having an impact on our business.

If we fail to attract and retain key management and scientific personnel, we may be unable to successfully develop or commercialize our product candidates.

Our success as a pharmaceutical company depends on our continued ability to attract, retain and motivate highly qualified management and scientific and clinical personnel. The loss of the services of any of our senior management could delay or prevent obtaining marketing approval or commercialization of our product candidates.

Our 2019 restructuring may have a negative impact on our ability to attract and retain qualified personnel. In order to reduce operating expenses and conserve cash resources following receipt of the Complete Response Letter we received from the FDA regarding our NDA for EDSIVO™ for the treatment of vEDS, in June 2019, we implemented a corporate restructuring initiative including a reduction of approximately 60% of our full-time workforce of 48 employees and a halt of precommercial activities for EDSIVO™. As a result, as of June 30, 2020, we had a full-time workforce of 19 employees to conduct our planned business operations. If our projections prove to be inaccurate or if we are forced to implement any further workforce reductions, we may not have sufficient staffing to pursue our research and development goals.

We may not be able to attract or retain qualified management and scientific personnel in the future due to the intense competition for a limited number of qualified personnel among pharmaceutical businesses, and other pharmaceutical, biotechnology and other businesses. Our failure to attract, hire, integrate and retain qualified personnel could impair our ability to achieve our business objectives.

We may not be able to win government, academic institution or non-profit contracts or grants.

From time to time, we may apply for contracts or grants from government agencies, non-profit entities and academic institutions. For example, we are pursuing several financing options, including federally-funded research contracts and grants and other potentially non-dilutive funding sources, to fund our planned emetine development program for the potential treatment of patients with COVID-19. Such contracts or grants can be highly attractive because they provide capital to fund the ongoing development of our product candidates without diluting our stockholders. However, there is often significant competition for these contracts or grants. Entities offering contracts or grants may have requirements to apply for or to otherwise be eligible for certain contracts or grants that our competitors may be able to satisfy that we cannot. In addition, such entities may make unfavorable decisions as to whether to offer contracts or make grants, to whom the contracts or grants may or will be awarded and the size of the contracts or grants to each awardee. Even if we are able to satisfy the award requirements, there is no guarantee that we will be a successful awardee. Therefore, we may not be able to win any contracts or grants in a timely manner, if at all.

If a successful product liability claim or series of claims is brought against us for uninsured liabilities or in excess of insured liabilities, we could be forced to pay substantial damage awards.

The use of any of our product candidates in clinical trials, and the sale of any approved products, may expose us to product liability claims. We currently maintain product liability insurance coverage in amounts we consider to be reasonable for our stage of development. We intend to monitor the amount of coverage we maintain as the size and design of our clinical trials evolve, and if we are successful in obtaining approval to commercialize any of our product candidates, adjust the amount of coverage we maintain accordingly. However, there is no assurance that such insurance coverage will fully protect us against some or all of the claims to which we might become subject. We might not be able to maintain adequate insurance coverage at a reasonable cost or in sufficient amounts or scope to protect us against potential losses. In the event a claim is brought against us, we might be required to pay legal and other expenses to defend the claim, as well as uncovered damages awards resulting from a claim brought successfully against us.

Furthermore, whether or not we are ultimately successful in defending any such claims, we might be required to direct financial and managerial resources to such defense and adverse publicity could result, all of which could harm our business.

Our employees, independent contractors, investigators, contract research organizations, consultants, collaborators and vendors may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements and insider trading.

We are exposed to the risk that our employees and other third parties may engage in fraudulent conduct or other illegal activity. Misconduct by employees and other third parties could include intentional, reckless and/or negligent conduct or disclosure of unauthorized activities to us that violate FDA regulations, including those laws requiring the reporting of true, complete and accurate information to the FDA, manufacturing standards, federal and state healthcare fraud and abuse laws and regulations, or laws that require the reporting of financial information or data accurately. In particular, sales, marketing and business arrangements in the healthcare industry are subject to extensive laws intended to prevent fraud, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and promotion, sales commission, customer incentive programs and other business arrangements. Activities subject to these laws also involve the improper use of information obtained in the course of clinical trials, which could result in regulatory sanctions and serious harm to our reputation. It is not always possible to identify and deter employee and other third-party misconduct, and the precautions we take to detect and prevent this activity may not be effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to be in compliance with such laws. If any such actions are instituted against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, including the imposition of significant civil, criminal and administrative penalties, damages, monetary fines, disgorgement, possible exclusion from participation in Medicare, Medicaid and other federal healthcare programs, contractual damages, reputational harm, diminished profits and future earnings and curtailment or restructuring of our operations, any of which could adversely affect our ability to operate.

Our internal computer systems, or those of our development collaborators, third-party clinical research organizations or other contractors or consultants, may fail or suffer cybersecurity or other security breaches, which could result in a material disruption of our product development programs.

Despite the implementation of security measures, our internal computer systems and those of our current and any future CROs and other contractors, consultants and collaborators are vulnerable to cybersecurity breaches and damage from computer viruses, unauthorized access, natural disasters, terrorism, war and telecommunication and electrical failures. While we have not experienced any such material system failure, accident or security breach to date, if such an event were to occur and cause interruptions in our operations, it could result in a material disruption of our development programs and our business operations. For example, the loss of clinical trial data from completed or future clinical trials could result in delays in our marketing approval efforts and significantly increase our costs to recover or reproduce the data. Likewise, we intend to rely on third parties to manufacture our product candidates and conduct clinical trials, and similar events relating to their computer systems could also have a material adverse effect on our business. To the extent that any disruption or cybersecurity or other security breach were to result in a loss of, or damage to, our data or applications, or inappropriate disclosure of confidential or proprietary information, we could incur liability, the further development and commercialization of our product candidates could be delayed, and our reputation could be harmed.

Our product candidate EDSIVO^TM has not been approved for any indication in the U.S. and, in June 2019, we received a Complete Response Letter from the FDA stating that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. This may result in greater research and development expenses, regulatory issues that could further delay or prevent approval, or discovery of unknown or unanticipated adverse effects.

EDSIVO^TM is a repurposing of celiprolol for the treatment of vEDS. An NDA for this drug for the treatment of hypertension was submitted to the FDA in 1987, however, the NDA was withdrawn prior to review. Celiprolol has, however, been approved in Europe for the treatment of hypertension since 1984. Regulatory approval of EDSIVO^TM may be more expensive and take longer than for other, more well-known or extensively studied pharmaceutical product candidates due to our and regulatory agencies’ lack of experience with celiprolol. In June 2019, we received a Complete Response Letter from the FDA regarding our NDA for EDSIVO^TM (celiprolol) for the treatment of vEDS. The Complete Response Letter stated that it will be necessary to conduct an adequate and well-controlled trial to determine whether celiprolol reduces the risk of clinical events in patients with vEDS. We had previously devoted a substantial majority of our research, development, clinical, and precommercial efforts and financial resources towards the development of EDSIVO™. In order to reduce operating expenses and conserve cash resources, in June 2019, we implemented a corporate restructuring which included a reduction of approximately 60% of our full-time workforce of 48 employees and halted precommercial activities for EDSIVO^TM. In December 2019, we submitted a Formal Dispute Resolution Request to the FDA’s Office

of New Drugs appealing the FDA’s decision outlined in the Complete Response Letter. In March 2020, we received a response to our Formal Dispute Resolution Request from the Office of New Drugs of the FDA stating that it had denied our appeal of the Complete Response Letter in relation to the NDA for EDSIVO™. In its Appeal Denied letter, the Office of New Drugs described possible paths forward for Acer to explore that could provide the substantial evidence of effectiveness needed to support a potential resubmission of the EDSIVO™ NDA for the treatment of patients with vEDS with a confirmed COL3A1 mutation. In its Appeal Denied letter, the Office of New Drugs referred to the FDA Guidance document issued in December 2019, where substantial evidence of effectiveness can be provided by two or more adequate and well-controlled studies demonstrating efficacy, or a single positive adequate and well-controlled study plus confirmatory evidence. While neither resubmission nor the prospect of approval of the EDSIVO™ NDA is assured, we are evaluating our possible next steps with the goal of resubmission of the EDSIVO™ NDA. The novelty of this product candidate may continue to lengthen the regulatory review process, ultimately require the conduct of one or more additional studies or clinical trials as a prerequisite to approval, increase our development costs, lead to changes in regulatory positions and interpretations, delay or prevent approval and commercialization, or lead to significant post-approval limitations or restrictions. There is also an increased risk that we may discover previously unknown or unanticipated adverse effects during our clinical trials and beyond. Any such events could adversely impact our business prospects, financial condition and results of operations.

Even if we obtain the required regulatory approvals in the U.S. and other territories, the commercial success of our product candidates will depend on market awareness and acceptance of our product candidates.

Even if we obtain marketing approval for our current product candidates or any other product candidates that we may develop or acquire in the future, the products may not gain market acceptance among physicians, key opinion leaders, healthcare payors, patients and the medical community. Market acceptance of any approved products depends on a number of factors, including:

Market acceptance is critical to our ability to generate revenue. Any product candidate, if approved and commercialized, may be accepted in only limited capacities or not at all. If any approved products are not accepted by the market to the extent that we expect, we may not be able to generate revenue and our business would suffer.

If the market opportunities for our product candidates are smaller than we believe they are, then our revenues may be adversely affected and our business may suffer.

The diseases that our current and future product candidates are being developed to address are rare. Our projections of both the number of people who have these diseases, as well as the subset of people with these diseases who have the potential to benefit from treatment with our product candidates, and our assumptions relating to pricing are based on estimates. Given the small number of patients who have the diseases that we are targeting, our eligible patient population and pricing estimates may differ significantly from the actual market addressable by our product candidates.

Currently, most reported estimates of the prevalence of vEDS, UCD, and MSUD, are based on studies of small subsets of the population of specific geographic areas, which are then extrapolated to estimate the prevalence of the diseases in the broader world population. It is difficult to precisely measure the incidence or prevalence of vEDS in any population. Studies estimate the prevalence of vEDS as ranging from approximately 1 in 90,000 to 1 in 250,000. In 2017, we commissioned a patient-finder study that phenotypically identified 4,169 vEDS patients in the U.S. from an analysis of a commercially available patient claims database, with

data of approximately 190 million unique patient lives. Based on that information, we estimate the prevalence of phenotypically-defined vEDS in the U.S. could be greater than 1 in 45,000.

Studies suggest that the incidence of UCD in the U.S. is 1 in 35,000 live births. Approximately 2,000 patients suffer from UCD in the U.S. Studies indicate that MSUD affects an estimated 1 in 185,000 infants worldwide. Approximately 3,000 patients suffer from MSUD worldwide, of whom approximately 800 are located in the U.S.

It is estimated that vEDS, UCD, and MSUD, collectively impact approximately 7,000 patients in the U.S. As new studies are performed the estimated prevalence of these diseases may change. The number of patients may turn out to be lower than expected. There can be no assurance that the prevalence of vEDS, UCD or MSUD in the study populations accurately reflect the prevalence of these diseases in the broader world population. If our estimates of the prevalence of vEDS, UCD, or MSUD, or of the number of patients who may benefit from treatment with ACER-001 or EDSIVO^TM prove to be incorrect, the market opportunities for our product candidates may be smaller than we believe they are, our prospects for generating revenue may be adversely affected and our business may suffer. Likewise, the potentially addressable patient population for each of our product candidates may be limited or may not be amenable to treatment with our product candidates, and new patients may become increasingly difficult to identify or gain access to, which would adversely affect our business, financial condition, results of operations and prospects.

We currently have limited marketing and sales experience. If we are unable to establish sales and marketing capabilities or enter into agreements with third parties to market and sell our product candidates, we may be unable to generate any revenue.

We have never commercialized a product candidate, and although precommercial activities had been conducted for EDSIVO^TM prior to our receipt of the FDA’s Complete Response Letter regarding our NDA for EDSIVO^TM, we currently do not have marketing, sales or distribution capabilities for our product candidates. In order to commercialize any of our products that receive marketing approval, we would have to build marketing, sales, medical affairs, distribution, managerial and other non-technical capabilities or make arrangements with third parties to perform these services, and we may not be successful in doing so. In the event of successful development of our product candidates, if we elect to build a targeted specialty sales force, such an effort would be expensive and time consuming. Any failure or delay in the development of our internal sales, marketing and distribution capabilities would adversely impact the commercialization of these products. We may choose to collaborate with third parties that have their own sales forces and established distribution systems, in lieu of or to augment any sales force and distribution systems we may create. If we are unable to enter into collaborations with third parties for the commercialization of approved products, if any, on acceptable terms or at all, or if any such collaborator does not devote sufficient resources to the commercialization of our product or otherwise fails in commercialization efforts, we may not be able to successfully commercialize our product candidates if we receive marketing approval. If we are not successful in commercializing our product candidates, either on our own or through collaborations with one or more third parties, our potential future revenue will be materially and adversely impacted.

If we fail to enter into strategic relationships or collaborations, our business, financial condition, commercialization prospects and results of operations may be materially adversely affected.

Our product development programs and the potential commercialization of our current product candidates will require substantial additional cash to fund expenses. Therefore, in addition to financing the development of our product candidates through additional equity financings or through debt financings, we may decide to enter into collaborations with pharmaceutical or biopharmaceutical companies for the development and potential commercialization of our product candidates.

We face significant competition in seeking appropriate collaborators. Collaborations are complex and time-consuming to negotiate and document. We may also be restricted under existing and future collaboration agreements from entering into agreements on certain terms with other potential collaborators. We may not be able to negotiate collaborations on acceptable terms, or at all. If that were to occur, we may have to curtail the development of a particular product, reduce or delay one or more of our development programs, delay our potential commercialization or reduce the scope of our sales or marketing activities, or increase our expenditures and undertake development or commercialization activities at our own expense. If we elect to increase our expenditures to fund development or commercialization activities on our own, we may need to obtain additional capital, which may not be available to us on acceptable terms or at all. If we do not have sufficient funds, we will not be able to bring our product candidates to market and generate product revenue. If we do enter into a collaboration agreement, it could be subject to the following risks, each of which may materially harm our business, commercialization prospects and financial condition:

Coverage and reimbursement may be limited or unavailable in certain market segments for our product candidates, which could make it difficult for us to sell our products profitably.

There is significant uncertainty related to third-party coverage and reimbursement of newly approved pharmaceuticals. Market acceptance and sales of any approved product candidates will depend significantly on the availability of coverage and adequate reimbursement from third-party payors and may be affected by existing and future healthcare reform measures. Patients who are prescribed treatments for their conditions and providers performing the prescribed services generally rely on third-party payors to reimburse all or part of the associated healthcare costs. Government authorities and third-party payors, such as private health insurers, health maintenance organizations, and government payors like Medicare and Medicaid, decide which drugs they will pay for and establish reimbursement levels. Increasingly, third-party payors are requiring that drug companies provide them with predetermined discounts from list prices and are challenging the prices charged for drugs and products. Coverage and reimbursement may not be available for any product that we commercialize and, even if coverage is provided, the level of reimbursement may not be satisfactory. Inadequate reimbursement levels may adversely affect the demand for, or the price of, any drug candidate for which we obtain marketing approval.

Reimbursement by a third-party payor may depend upon a number of factors, including the third-party payor’s determination that use of a product is, among other things:

Obtaining coverage and adequate reimbursement approval for a product from a government or other third-party payor is a time consuming and costly process that could require us to conduct expensive pharmacoeconomic studies and provide supporting scientific, clinical and cost-effectiveness data for the use of our products to the payor. We may not be able to provide data sufficient to gain acceptance with respect to coverage and adequate reimbursement. In addition to examining the medical necessity and cost-effectiveness of new products, coverage may be limited to specific drug products on an approved list, or formulary, which might not include all of the FDA-approved drug products for a particular indication. There may also be formulary placements that result in lower reimbursement levels and higher cost-sharing borne by patients, any of which could have an adverse effect on our revenues and profits. Moreover, a third-party payor’s decision to provide coverage for a drug product does not imply that an adequate reimbursement rate will be approved. Adequate third-party reimbursement may not be available to enable us to maintain price levels sufficient to realize an appropriate return on our investment in product development. Additionally, coverage and reimbursement for drug products can differ significantly from payor to payor. One third-party payor’s decision to cover a particular drug product does not ensure that other payors will also provide coverage for the drug product, or even if coverage is available, establish an adequate reimbursement rate. In addition, pricing of orphan and rare disease drug treatments is under increased pressure given the overall healthcare cost climate generally, and pricing of pharmaceutical products specifically.

We cannot be sure that coverage or adequate reimbursement will be available for any of our product candidates. Also, we cannot be sure that reimbursement amounts will not reduce the demand for, or the price of, our products. If reimbursement is not available or is available only to limited levels, we may not be able to commercialize certain of our products. In the U.S., third-party payors are increasingly attempting to contain healthcare costs by limiting both coverage and the level of reimbursement of new drugs. Third-party payors are increasingly challenging the prices charged for medical products and services, examining the medical necessity and reviewing the cost-effectiveness of drug products and medical services and questioning safety and efficacy. As a result, significant uncertainty exists as to whether and how much third-party payors will reimburse patients for their use of newly approved drugs, which in turn will put pressure on the pricing of drugs. Additionally, emphasis on managed care in the U.S. has increased and we expect will continue to increase the pressure on drug pricing. If third-party payors do not consider our products to be cost-effective compared to other available therapies, they may not cover the products for which we receive FDA approval or, if they do, the level of payment may not be sufficient to allow us to sell our products at a profit.

Coverage policies, third-party reimbursement rates and drug pricing regulation may change at any time, and there is the potential for significant movement in these areas in the foreseeable future. Even if favorable coverage and reimbursement status is attained for one or more products for which we receive marketing approval, less favorable coverage policies and reimbursement rates may be implemented in the future.

We face substantial competition, which may result in others discovering, developing or commercializing products before, or more successfully, than we do.

The life sciences industry is highly competitive, and we face significant competition from many pharmaceutical, biopharmaceutical and biotechnology companies that are generally developing and marketing therapeutic products. Such competition may include large pharmaceutical and biotechnology companies, specialty pharmaceutical and generic companies and medical technology companies. Our future success depends on our ability to demonstrate and maintain a competitive advantage with respect to the design, development and commercialization of our product candidates for the treatment of orphan and ultra-orphan diseases for which there is a small patient population in the U.S. A drug designated an Orphan Drug may receive up to seven years of exclusive marketing in the U.S. for that indication. Our objective is to design, develop and commercialize product candidates by repurposing or reformulating existing drugs for orphan diseases with significant unmet medical needs.

Many of our potential competitors have significantly greater financial, manufacturing, marketing, development, technical and human resources than we do. Large pharmaceutical and biotechnology companies, in particular, have extensive experience in clinical testing, obtaining regulatory approvals, recruiting patients and in manufacturing clinical products. These companies also have significantly greater research and marketing capabilities than we do and may also have products that have been approved or are in late stages of development, and have collaborative arrangements in our target markets with leading companies and research institutions. Established companies may also invest heavily to accelerate discovery and development of compounds that could make the product candidates that we develop obsolete. As a result of all of these factors, the obtaining of Orphan Drug designation for our product candidates is essential to our viability since our competitors may, among other things:

Should any of these events occur, our business, financial condition, results of operations, and prospects could be materially adversely affected. If we are not able to compete effectively against potential competitors, our business will not grow and our financial condition and operations will suffer.

We believe that our ability to successfully compete will depend on our ability to obtain Orphan Drug designation as well as:

If our competitors are able to obtain Orphan Drug exclusivity for their products that are the same drug as our product candidates, we may not be able to have competing products approved by the applicable regulatory authority for a significant period of time or benefit from that exclusivity.

We have Orphan Drug exclusivity designation in the U.S. for ACER-001 for MSUD and EDSIVO^TM for vEDS. We expect to seek Orphan Drug exclusivity from the EMA for ACER-001 for MSUD; however, there can be no assurance that we will be successful. If we are unable to maintain our current Orphan Drug exclusivity or are unable to secure orphan status in Europe for ACER-001 for MSUD, it may have a material negative effect on our business.

Generally, if a product with an Orphan Drug designation subsequently receives the first marketing approval for the indication for which it has such designation, that product is entitled to a period of marketing exclusivity, which precludes the applicable regulatory authority from approving another marketing application for the same drug for the same indication for that time period. The applicable period is seven years in the U.S. and ten years in the European Union. The exclusivity period in the European Union can be reduced to six years if the product no longer meets the criteria for Orphan Drug designation or if its commercialization is sufficiently profitable so that market exclusivity is no longer justified. Orphan Drug exclusivity may be lost if the FDA or the EMA determines that the request for designation was materially defective or if the manufacturer is unable to ensure sufficient quantity of the product to meet the needs of patients with the rare disease or condition. Maintaining and/or obtaining Orphan Drug exclusivity for ACER-001 and EDSIVO^TM may be important to the product candidate’s success. Even if we obtain Orphan Drug exclusivity, we may not be able to maintain it. For example, if a competitive product that treats the same disease as our product candidate is shown to be clinically superior to our product candidate, any Orphan Drug exclusivity we have obtained will not block the approval of such competitive product and we may effectively lose what had previously been Orphan Drug exclusivity. Orphan Drug exclusivity for ACER-001 or EDSIVO^TM also will not bar the FDA from approving another celiprolol drug product or a sodium phenylbutyrate (“NaPB”) product, for another indication. In the U.S., reforms to the Orphan Drug Act, if enacted, could also materially affect our ability to maintain Orphan Drug exclusivity for ACER-001 for MSUD and EDSIVO^TM for vEDS.

Price controls, importation of drug products from outside the U.S., or other rules may be imposed in domestic or foreign markets, which may adversely affect our future profitability.

The U.S. government, state legislatures, and foreign governments have shown significant interest in implementing cost-containment programs to limit the growth of government-paid healthcare costs and drug prices in general, including for therapies for rare diseases. These measures include price controls, transparency requirements triggered by the introduction of new high-cost drugs into the market, drug re-importation, restrictions on reimbursement and requirements for substitution of generic products for branded prescription drugs. Some laws and regulations have already been enacted in these areas, and additional measures have been introduced or are under consideration at both the federal and state levels. Additionally, legislation that affects reimbursement for drugs with small patient populations could be adopted, limiting payments for pharmaceuticals such as our product candidates, which could adversely affect our potential future net revenue and results. Adoption of such controls and measures and tightening of restrictive policies in jurisdictions with existing controls and measures could limit payments for pharmaceuticals such as our drug product candidates and could adversely affect our net revenue and results.

In some countries, particularly member states of the European Union, the pricing of prescription drugs is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after receipt of marketing approval for a product. In addition, there can be considerable pressure by governments and other stakeholders on prices and reimbursement levels, including as part of cost containment measures. Political, economic and regulatory developments may further complicate pricing negotiations, and pricing negotiations may continue after reimbursement has been obtained. Reference pricing used by various European Union member states and parallel distribution, or arbitrage between low-priced and high-priced member states, can further reduce prices. In some countries, we may be required to conduct a clinical trial or other studies that compare the cost-effectiveness of our product candidates to other available therapies in order to obtain or maintain reimbursement or pricing approval. Publication of discounts by third-party payors or authorities may lead to further pressure on the prices or reimbursement levels within the country of publication and other countries. If reimbursement of our products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, our business could be adversely affected.

Pharmaceutical technologies have undergone rapid and significant change, and we expect that they will continue to do so. As a result, there is significant risk that our product candidates may be rendered obsolete or uneconomical by new discoveries before we recover all or any expenses incurred in connection with their development. If our product candidates are rendered obsolete by advancements in pharmaceutical technologies, our business will suffer.

Government controls and healthcare reform measures could adversely affect our business.

The business and financial condition of pharmaceutical and biotechnology companies are affected by the efforts of governmental and third-party payors to contain or reduce the costs of healthcare. In the U.S. and in foreign jurisdictions, there have been, and we expect that there will continue to be, a number of legislative and regulatory proposals aimed at changing the healthcare system. For example, in some foreign countries, particularly in Europe, the pricing of prescription pharmaceuticals is subject to governmental control. In these countries, pricing negotiations with governmental authorities can take considerable time after the receipt of marketing approval for a product candidate. To obtain reimbursement or pricing approval in some countries, we may be required to conduct additional clinical trials that compare the cost-effectiveness of any product candidate to other available therapies. If reimbursement of any product candidate is unavailable or limited in scope or amount in a particular country, or if pricing is set at unsatisfactory levels, we may be unable to achieve or sustain profitability in such country. In the U.S., the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (“MMA”) changed the way Medicare covers and pays for pharmaceutical products. The legislation established Medicare Part D, which expanded Medicare coverage for outpatient prescription drug purchases by the elderly but provided authority for limiting the number of drugs that will be covered in any therapeutic class. The MMA also introduced a new reimbursement methodology based on average sales prices for physician-administered drugs. Any negotiated prices for any product candidate covered by a Part D prescription drug plan will likely be lower than the prices that might otherwise be obtained outside of the Medicare Part D prescription drug plan. Moreover, while Medicare Part D applies only to drug benefits for Medicare beneficiaries, private payors often follow Medicare coverage policy and payment limitations in setting their own payment rates. Any reduction in payment under Medicare Part D may result in a similar reduction in payments from non-governmental payors.

The U.S. and several other jurisdictions are considering, or have already enacted, a number of legislative and regulatory proposals to change the healthcare system in ways that could affect our ability to sell any product candidate. Among policy-makers and payors in the U.S. and elsewhere, there is significant interest in promoting changes in healthcare systems with the stated goals of containing healthcare costs, improving quality and/or expanding access to healthcare. In the U.S., the pharmaceutical industry has been a particular focus of these efforts and has been significantly affected by major legislative initiatives. There have been, and likely will continue to be, legislative and regulatory proposals at the federal and state levels directed at broadening the availability of healthcare and containing or lowering the cost of healthcare. We cannot predict the initiatives that may be adopted in the future. The continuing efforts of the government, insurance companies, managed care organizations and other payors of healthcare services to contain or reduce costs of healthcare may adversely affect: the demand for any product candidate; the ability to set a price that we believe is fair for any product candidate; our ability to generate revenues and achieve or maintain profitability; the level of taxes that we are required to pay; and the availability of capital.

We rely on third-party suppliers and other third parties for production of our product candidates and our dependence on these third parties may impair the advancement of our research and development programs and the development of our product candidates.

We do not currently own or operate manufacturing facilities for clinical or commercial production of our product candidates. We lack the resources and the capability to manufacture any of our product candidates on a clinical or commercial scale. Instead, we rely on, and expect to continue to rely on, third parties for the supply of raw materials and manufacture of drug supplies necessary to conduct our preclinical studies and clinical trials. Our reliance on third parties may expose us to more risk than if we were to manufacture our current product candidates or other products ourselves. Delays in production by third parties could delay our clinical trials or have an adverse impact on any commercial activities. In addition, the fact that we are dependent on third parties for the manufacture of and formulation of our product candidates means that we are subject to the risk that the products may have manufacturing defects that we have limited ability to prevent or control. Although we oversee these activities to ensure compliance with our quality standards, budgets and timelines, we have had and will continue to have less control over the manufacturing of our product candidates than potentially would be the case if we were to manufacture our product candidates. Further, the third parties we deal with could have staffing difficulties, might undergo changes in priorities or may become financially distressed, which would adversely affect the manufacturing and production of our product candidates. In addition, a third party could be acquired by, or enter into an exclusive arrangement with, one of our competitors, which would adversely affect our ability to access the formulations we require.

The facilities used by our current contract manufacturers and any future manufacturers to manufacture our product candidates must be inspected by the FDA after we submit our NDA. We do not control the manufacturing process of, and are completely dependent on, our contract manufacturers for compliance with the regulatory requirements, known as cGMPs, for manufacture of both active drug substances and finished drug products. If our contract manufacturers cannot successfully manufacture material that conforms to our specifications and the strict regulatory requirements of the FDA or others, the FDA may refuse to approve our NDA. If the FDA or a comparable foreign regulatory authority does not approve our NDA because of concerns about the manufacture of our product candidates or if significant manufacturing issues arise in the future, we may need to find alternative manufacturing facilities, which would significantly impact our ability to develop our product candidates, to obtain marketing approval of our NDA or to

continue to market our product candidates, if approved. Although we are ultimately responsible for ensuring compliance with these regulatory requirements, we do not have day-to-day control over a contract manufacturing organization (“CMO”) or other third-party manufacturer’s compliance with applicable laws and regulations, including cGMPs and other laws and regulations, such as those related to environmental health and safety matters. Any failure to achieve and maintain compliance with these laws, regulations and standards could subject us to the risk that we may have to suspend the manufacturing of our product candidates or that obtained approvals could be revoked, which would adversely affect our business and reputation. In addition, third-party contractors, such as our CMOs, may elect not to continue to work with us due to factors beyond our control. Although we have contracts in place, they may also refuse to work with us because of their own financial difficulties, business priorities or other reasons, at a time that is costly or otherwise inconvenient for us. If we were unable to find adequate replacement or another acceptable solution in time, our clinical trials could be delayed or our commercial activities could be harmed.

Problems with the quality of the work of third parties may lead us to seek to terminate our working relationships and use alternative service providers. However, making this change may be costly and may delay clinical trials. In addition, it may be very challenging, and in some cases impossible, to find replacement service providers that can develop and manufacture our drug candidates in an acceptable manner and at an acceptable cost and on a timely basis. The sale of products containing any defects or any delays in the supply of necessary services could adversely affect our business, financial condition, results of operations, and prospects.

Growth in the costs and expenses of components or raw materials may also adversely affect our business, financial condition, results of operations, and prospects. Supply sources could be interrupted from time to time and, if interrupted, supplies may not be resumed (whether in part or in whole) within a reasonable timeframe and at an acceptable cost or at all.

We plan to rely on third parties to conduct clinical trials for our product candidates, with the exception of EDSIVO^TM, for which we do not presently intend to conduct additional clinical trials. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, it may cause delays in commencing and completing clinical trials of our product candidates or we may be unable to obtain marketing approval for or commercialize our product candidates.

Clinical trials must meet applicable FDA and foreign regulatory requirements. We do not have the ability to independently conduct clinical trials for any of our product candidates. We have and will continue to rely on third parties, such as CROs, medical institutions, clinical investigators and contract laboratories, to conduct all of our clinical trials of our product candidates; however, we remain responsible for ensuring that each of our clinical trials is conducted in accordance with our investigational plan and protocol. Moreover, the FDA and other foreign regulatory authorities require us to comply with IND and human subject protection regulations and current good clinical practice standards, commonly referred to as GCPs, for conducting, monitoring, recording, and reporting the results of clinical trials to ensure that the data and results are scientifically credible and accurate and that the trial subjects are adequately informed of the potential risks of participating in clinical trials. Our reliance on third parties does not relieve us of these responsibilities and requirements. Regulatory authorities enforce these GCPs through periodic inspections of trial sponsors, principal investigators and trial sites. If we or any of our third-party contractors fail to comply with applicable GCPs, the clinical data generated in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities may require us to perform additional clinical trials before approving our marketing applications. There is no assurance that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials comply with GCPs. Our failure to comply with these regulations may require us to repeat clinical trials, which would delay the marketing approval process.

There are significant requirements imposed on us and on clinical investigators who conduct clinical trials that we sponsor. Although we are responsible for selecting qualified CROs or clinical investigators, providing them with the information they need to conduct the clinical trials properly, ensuring proper monitoring of the clinical trials, and ensuring that the clinical trials are conducted in accordance with the general investigational plan and protocols contained in the IND, we cannot ensure that the CROs or clinical investigators will maintain compliance with all regulatory requirements at all times. The pharmaceutical industry has experienced cases where clinical investigators have been found to incorrectly record data, omit data, or even falsify data. We cannot ensure that the CROs or clinical investigators in our trials will not make mistakes or otherwise compromise the integrity or validity of data, any of which would have a significant negative effect on our ability to obtain marketing approval, our business, and our financial condition.

We or the third parties we rely on may encounter problems in clinical trials that may cause us or the FDA or foreign regulatory agencies to delay, suspend or terminate our clinical trials at any phase. These problems could include the possibility that we may not be able to manufacture sufficient quantities of materials for use in our clinical trials, conduct clinical trials at our preferred sites, enroll a sufficient number of patients for our clinical trials at one or more sites, or begin or successfully complete clinical trials in a timely fashion, if at all. Furthermore, we, the FDA or foreign regulatory agencies may suspend clinical trials of our product candidates at any time if we or they believe the subjects participating in the trials are being exposed to unacceptable health risks, whether as a result of adverse events occurring in our trials or otherwise, or if we or they find deficiencies in the clinical trial process or conduct of the investigation.

The FDA and foreign regulatory agencies could also require additional clinical trials before or after granting of marketing approval for any products, which would result in increased costs and significant delays in the development and commercialization of such products and could result in the withdrawal of such products from the market after obtaining marketing approval. Our failure to adequately demonstrate the safety and efficacy of a product candidate in clinical development could delay or prevent obtaining marketing approval of the product candidate and, after obtaining marketing approval, data from post-approval studies could result in the product being withdrawn from the market, either of which would likely have a material adverse effect on our business.

Our proprietary rights may not adequately protect our technologies and product candidates.

Our commercial success will depend in part on our ability to obtain patents and protect our existing patent position as well as our ability to maintain adequate protection of other intellectual property for our technologies, product candidates, and any future products in the U.S. and other countries. If we do not adequately protect our intellectual property, competitors may be able to use our technologies and erode or negate any competitive advantage we may have, which could harm our business and ability to achieve profitability. The laws of some foreign countries do not protect our proprietary rights to the same extent or in the same manner as U.S. laws, and we may encounter significant problems in protecting and defending our proprietary rights in these countries. We will be able to protect our proprietary rights from unauthorized use by third parties only to the extent that our proprietary technologies, product candidates and any future products are covered by valid and enforceable patents or are effectively maintained as trade secrets.

We apply for patents covering both our technologies and product candidates, as we deem appropriate. However, we may fail to apply for patents on important technologies or product candidates in a timely fashion, or at all. Our existing patents and any future patents we obtain may not be sufficiently broad to prevent others from practicing our technologies or from developing competing products and technologies. We cannot be certain that our patent applications will be approved or that any patents issued will adequately protect our intellectual property.

While we are responsible for and have control over the filing and prosecuting of patent applications and maintaining patents which cover making, using or selling ACER-001 and EDSIVO^TM, we may lose any such rights if we decide to allow any licensed patent to lapse. If we fail to appropriately prosecute and maintain patent protection for any of our product candidates, our ability to develop and commercialize those product candidates may be adversely affected and we may not be able to prevent competitors from making, using and selling competing products.

Moreover, the patent positions of pharmaceutical companies are highly uncertain and involve complex legal and factual questions for which important legal principles are evolving and remain unresolved. As a result, the validity and enforceability of patents cannot be predicted with certainty. In addition, we do not know whether:

The actual protection afforded by a patent varies based on products or processes, from country to country and depends upon many factors, including the type of patent, the scope of its coverage, the availability of regulatory related extensions, the availability of legal remedies in a particular country, the validity and enforceability of the patents and our financial ability to enforce our patents and other intellectual property. Our ability to maintain and solidify our proprietary position for our products will depend on our success in obtaining effective claims and enforcing those claims once granted. Our issued patents and those that may issue in the future, or those licensed to us, may be challenged, narrowed, invalidated or circumvented, and the rights granted under any issued patents may not provide us with proprietary protection or competitive advantages against competitors with similar products. Due to the extensive amount of time required for the development, testing and regulatory review of a potential product, it is possible that, before any of our product candidates can be commercialized, any related patent may expire or remain in force for only a short period following commercialization, thereby reducing any advantage of the patent.

We may also rely on trade secrets to protect some of our technology, especially where we do not believe patent protection is appropriate or obtainable. However, trade secrets are difficult to maintain. While we use reasonable efforts to protect our trade secrets, we or any of our collaborators’ employees, consultants, contractors or scientific and other advisors may unintentionally or willfully disclose our proprietary information to competitors and we may not have adequate remedies in respect of that disclosure. Enforcement of claims that a third party has illegally obtained and is using trade secrets is expensive, time consuming and uncertain. In addition, foreign courts are sometimes less willing than U.S. courts to protect trade secrets. If our competitors independently develop equivalent knowledge, methods and know-how, we would not be able to assert our trade secrets against them and our business could be harmed.

We are a party to license agreements under which we license intellectual property and receive commercialization rights relating to ACER-001, EDSIVO^TM, and osanetant. If we fail to comply with obligations in such agreements or otherwise experience disruptions to our business relationships with our licensors, we could lose license rights that are important to our business; any termination of such agreements would adversely affect our business.

In April 2014, we entered into an agreement with Baylor College of Medicine pursuant to which we obtained an exclusive worldwide license to develop and commercialize NaPB (ACER-001) for treatment of MSUD. In August 2016, we entered into an agreement with Assistance Publique—Hôpitaux de Paris, Hôpital Européen Georges Pompidou, or AP-HP, pursuant to which we obtained an exclusive worldwide right to access and use data from the Ong trial, which we used to support an NDA filing for EDSIVO^TM for the treatment of vEDS. In September 2018, we entered into an additional agreement with AP-HP pursuant to which we obtained the exclusive worldwide intellectual property rights to three European patent applications relating to certain uses of celiprolol including (i) the optimal dose of celiprolol in treating vEDS patients, (ii) the use of celiprolol during pregnancy and (iii) the use of celiprolol to treat kyphoscoliotic Ehlers-Danlos syndrome (type VI). In December 2018, we entered into an exclusive license agreement with Sanofi granting us worldwide rights to osanetant, a clinical-stage, selective, non-peptide tachykinin NK3 receptor antagonist. Under each license agreement, we are subject to commercialization and development diligence obligations, royalty payments and other obligations. If we fail to comply with any of these obligations or otherwise breach any of these license agreements, the licensor may have the right to terminate the license in whole or in part or to terminate the exclusive nature of the license. The loss of the licenses granted to us under our agreements with these licensors or the rights provided therein would prevent us from developing, manufacturing or marketing products covered by the license or subject to supply commitments, and could materially harm our business, financial condition, results of operations and prospects.

We may not be able to protect our intellectual property rights throughout the world.

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and our intellectual property rights in some countries outside the U.S. can be less extensive than those in the U.S. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the U.S. For example, many foreign countries have compulsory licensing laws under which a patent owner must grant licenses to third parties. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the U.S., or from selling or importing products made using our inventions in and into the U.S. or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and further, may export otherwise infringing products to territories where we have patent protection, but enforcement rights are not as strong as those in the U.S. These products may compete with our product candidates in jurisdictions where we do not have any issued patents and our patent claims or other intellectual rights may not be effective or sufficient to prevent them from so competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal systems of certain countries do not favor the enforcement of patents and other intellectual property protection, which could make it difficult for us to stop the infringement of our patents generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies

awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license.

The patent protection for our product candidates may expire before we are able to maximize their commercial value, which may subject us to increased competition and reduce or eliminate our opportunity to generate product revenue.

The patents for our product candidates have varying expiration dates and, if these patents expire, we may be subject to increased competition and we may not be able to recover our development costs or market any of our approved products profitably. In some of the larger potential market territories, such as the U.S. and Europe, patent term extension or restoration may be available to compensate for time taken during aspects of the product’s development and regulatory review. For example, depending on the timing, duration and specifics of FDA marketing approval of our product candidates, if any, one of the U.S. patents covering each of such approved product(s) or the use thereof may be eligible for up to five years of patent term restoration under the Hatch-Waxman Act. The Hatch-Waxman Act allows a maximum of one patent to be extended per FDA-approved product. Patent term extension also may be available in certain foreign countries upon regulatory approval of our product candidates.

Nevertheless, we may not be granted patent term extension either in the U.S. or in any foreign country because of, for example, failing to apply within applicable deadlines, failing to apply prior to expiration of relevant patents or otherwise failing to satisfy applicable requirements. Moreover, the term of extension, as well as the scope of patent protection during any such extension, afforded by the governmental authority could be less than we request. In addition, even though some regulatory authorities may provide some other exclusivity for a product under their own laws and regulations, we may not be able to qualify the product or obtain the exclusive time period. If we are unable to obtain patent term extension/restoration or some other exclusivity, we could be subject to increased competition and our opportunity to establish or maintain product revenue could be substantially reduced or eliminated. Furthermore, we may not have sufficient time to recover our development costs prior to the expiration of our U.S. and foreign patents.

Obtaining and maintaining our patent protection depends on compliance with various procedural, documentary, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.

The U.S. Patent and Trademark Office (“USPTO”) and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent prosecution process. Periodic maintenance fees, renewal fees, annuity fees and various other governmental fees on any issued patent and/or pending patent applications are due to be paid to the USPTO and foreign patent agencies in several stages over the lifetime of a patent or patent application. We employ an outside firm and rely on our outside counsel to pay these fees. While an inadvertent lapse may sometimes be cured by payment of a late fee or by other means in accordance with the applicable rules, there are many situations in which noncompliance can result in abandonment or lapse of the patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. If we fail to maintain the patents and patent applications directed to our product candidates, our competitors might be able to enter the market earlier than should otherwise have been the case, which would have a material adverse effect on our business.

We may become involved in lawsuits to protect our patents or other intellectual property rights, which could be expensive, time-consuming and ultimately unsuccessful.

Competitors may infringe our patents or other intellectual property rights. To counter infringement or unauthorized use, we may be required to file infringement claims, directly or through our licensors, which can be expensive and time consuming. In addition, in an infringement proceeding, a court may decide that a patent of our licensor is not valid or is unenforceable or may refuse to stop the other party from using the technology at issue on the grounds that our patents do not cover the technology in question. An adverse result in any litigation or defense proceedings could put one or more of the patents we license at risk of being invalidated or interpreted narrowly and could put our licensors’ patent applications at risk of not issuing.

Interference proceedings brought by the USPTO may be necessary to determine the priority of inventions with respect to our patents or the patents of our licensors. An unfavorable outcome could require us to cease using the technology or to attempt to license rights to it from the prevailing party. Our business could be harmed if a prevailing party does not offer us a license on terms that are acceptable to us. Litigation or interference proceedings may fail and, even if successful, may result in substantial costs and distraction of our management and other employees. We may not be able to prevent, alone or with our licensors, misappropriation of our proprietary rights, particularly in countries where the laws may not protect those rights as fully as in the U.S. In addition, potential infringers of our intellectual property rights may have substantially more resources than we do to defend their position, which could adversely affect the outcome of any such dispute.

Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential and proprietary information could be compromised by disclosure during this type of litigation. In addition, there could be public announcements of the results of hearings, motions or other interim proceedings or developments. If securities analysts or investors perceive these results to be negative, it could have a substantial adverse effect on the price of our common stock.

Third-party claims of intellectual property infringement or misappropriation may adversely affect our business and could prevent us from developing or commercializing our product candidates.

Our commercial success depends in part on us not infringing the patents and proprietary rights of third parties. There is a substantial amount of litigation, both within and outside the U.S., involving patent and other intellectual property rights in the biotechnology and pharmaceutical industries, including patent infringement lawsuits, interferences, oppositions, ex-parte review and inter partes reexamination and post-grant review proceedings before the USPTO and corresponding foreign patent offices. Numerous U.S. and foreign issued patents and pending patent applications owned by third parties exist in the fields in which we are developing and may develop our product candidates. As the biotechnology and pharmaceutical industries expand and more patents are issued, the risk increases that our product candidates may be subject to claims of infringement of the patent rights of third parties. If a third party claims that we infringe on their products or technology, we could face a number of issues, including:

Third parties may assert that we are employing their proprietary technology without authorization. There may be third-party patents or patent applications with claims to materials, formulations, methods of manufacture or methods for treatment related to the use or manufacture of our product candidates that we failed to identify. For example, applications filed before November 29, 2000 and certain applications filed after that date that will not be filed outside the U.S. remain confidential until issued as patents. Except for the preceding exceptions, patent applications in the U.S. and elsewhere are generally published only after a waiting period of approximately 18 months after the earliest filing. Therefore, patent applications covering our product candidates could have been filed by others without the knowledge of us or our licensors. Additionally, pending patent applications which have been published can, subject to certain limitations, be later amended in a manner that could cover our product candidates or the use or manufacture of our product candidates. We may also face a claim of misappropriation if a third party believes that we inappropriately obtained and used trade secrets of such third party. If we are found to have misappropriated a third party’s trade secrets, we may be prevented from further using such trade secrets, limiting our ability to develop our product candidates, and we may be required to pay damages.

If any third-party patents were held by a court of competent jurisdiction to cover aspects of our materials, formulations, methods of manufacture or methods for treatment, the holders of any such patents would be able to block our ability to develop and commercialize the applicable product candidate until such patent expired or unless we obtain a license. These licenses may not be available on acceptable terms, if at all. Even if we were able to obtain a license, the rights may be nonexclusive, which could result in our competitors gaining access to the same intellectual property.

Ultimately, we could be prevented from commercializing a product, or be forced to cease some aspect of our business operations, if, as a result of actual or threatened patent infringement claims, we are unable to enter into licenses on acceptable terms.

Parties making claims against us may obtain injunctive or other equitable relief, which could effectively block our ability to further develop and commercialize one or more of our product candidates. Defending against claims of patent infringement or misappropriation of trade secrets could be costly and time-consuming, regardless of the outcome. Thus, even if we were to ultimately prevail, or to settle at an early stage, such litigation could burden us with substantial unanticipated costs. In addition, litigation or threatened litigation could result in significant demands on the time and attention of our management team, distracting them from the pursuit of other company business. In the event of a successful claim of infringement against us, we may have to pay substantial damages, including treble damages and attorneys’ fees for willful infringement, pay royalties, redesign our infringing products or obtain one or more licenses from third parties, which may be impossible or require substantial time and monetary expenditure. In addition, the uncertainties associated with litigation could have a material adverse effect on our ability to raise the funds necessary to

continue our clinical trials, continue our research programs, license necessary technology from third parties, or enter into development collaborations that would help us bring our product candidates to market.

Changes in U.S. patent law could diminish the value of patents in general, thereby impairing our ability to protect our product candidates.

As is the case with other pharmaceutical companies, our success is heavily dependent on intellectual property, particularly on obtaining and enforcing patents and patent rights. Obtaining and enforcing patents and patent rights in the specialty pharmaceutical industry involves both technological and legal complexity, and therefore, is costly, time-consuming and inherently uncertain. In addition, the U.S. has recently enacted and is currently implementing wide-ranging patent reform legislation. Further, several recent U.S. Supreme Court rulings have either narrowed the scope of patent protection available in certain circumstances or weakened the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents and patent rights, once obtained.

For our U.S. patent applications containing a claim not entitled to priority before March 16, 2013, there is a greater level of uncertainty in the patent law. In September 2011, the Leahy-Smith America Invents Act (the “America Invents Act” or “AIA”) was signed into law. The AIA includes a number of significant changes to U.S. patent law, including provisions that affect the way patent applications will be prosecuted, reviewed after issuance, and may also affect patent litigation. The USPTO is currently developing regulations and procedures to govern administration of the AIA, and many of the substantive changes to patent law associated with the AIA. It is not clear what other, if any, impact the AIA will have on the operation of our business. Moreover, the AIA and its implementation could increase the uncertainties and costs surrounding the prosecution of patent applications and the enforcement or defense of patent rights, all of which could have a material adverse effect on our business and financial condition.

An important change introduced by the AIA is that, as of March 16, 2013, the U.S. transitioned to a “first-inventor-to-file” system for deciding which party should be granted a patent when two or more patent applications are filed by different parties claiming the same invention. A third party that files a patent application in the USPTO after that date but before a licensor or us could therefore be awarded a patent covering an invention of ours even if said licensor or we had made the invention before it was made by the third party. This will require us to be cognizant going forward of the time from invention to filing of a patent application. Furthermore, our ability to obtain and maintain valid and enforceable patent rights depends on whether the differences between the licensor’s or our technology and the prior art allow our technology to be patentable over the prior art. Since patent applications in the U.S. and most other countries are confidential for a period of time after filing, we cannot be certain that a licensor or we were the first to either (a) file any patent application related to our product candidates or (b) invent any of the inventions claimed in our patents or patent applications.

Among some of the other changes introduced by the AIA are changes that limit where a patentee may file a patent infringement suit and providing opportunities for third parties to challenge any issued patent in the USPTO. This applies to all U.S. patents, even those issued before March 16, 2013. Because of a lower evidentiary standard in USPTO proceedings compared to the evidentiary standard in U.S. federal court necessary to invalidate a patent claim, a third party could potentially provide evidence in a USPTO proceeding sufficient for the USPTO to hold a claim invalid as unpatentable even though the same evidence may be insufficient to invalidate the claim if first presented in a district court action. Accordingly, a third party may attempt to use the USPTO procedures to invalidate patent rights that would not have been invalidated if first challenged by the third party as a defendant in a district court action.

Depending on decisions by the U.S. Congress, the federal courts, and the USPTO, the laws and regulations governing patents could change in unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future.

Intellectual property rights do not address all potential threats to our competitive advantage.

The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have limitations, and may not adequately protect our business, or permit us to maintain our competitive advantage. The following examples are illustrative:

Confidentiality agreements with employees, consultants and others may not adequately prevent disclosure of trade secrets and protect other proprietary information.

We consider proprietary trade secrets and/or confidential know-how and unpatented know-how to be important to our business. We may rely on trade secrets and/or confidential know-how to protect our technology, especially where patent protection is believed by us to be of limited value. However, trade secrets and/or confidential know-how can be difficult to maintain as confidential.

To protect this type of information against disclosure or appropriation by competitors, our policy is to require our employees, consultants, contractors and advisors to enter into confidentiality agreements with us. However, current or former employees, consultants, contractors and advisers may unintentionally or willfully disclose our confidential information to competitors, and confidentiality agreements may not provide an adequate remedy in the event of unauthorized disclosure of confidential information. Enforcing a claim that a third party obtained illegally and is using trade secrets and/or confidential know-how is expensive, time consuming and unpredictable. The enforceability of confidentiality agreements may vary from jurisdiction to jurisdiction.

Failure to obtain or maintain trade secrets and/or confidential know-how trade protection could adversely affect our competitive position. Moreover, our competitors may independently develop substantially equivalent proprietary information and may even apply for patent protection in respect of the same. If successful in obtaining such patent protection, our competitors could limit our use of our trade secrets and/or confidential know-how.

We may need to license certain intellectual property from third parties, and such licenses may not be available or may not be available on commercially reasonable terms.

A third party may hold intellectual property, including patent rights that are important or necessary to the development or commercialization of our product candidates. It may be necessary for us to use the patented or proprietary technology of third parties to commercialize our product candidates, in which case we would be required to obtain a license from these third parties. Such a license may not be available on commercially reasonable terms or at all, which could materially harm our business.

We may be subject to claims that our employees, consultants or independent contractors have wrongfully used or disclosed confidential information of third parties.

We have received confidential and proprietary information from third parties. In addition, we employ individuals who were previously employed at other biotechnology or pharmaceutical companies. We may be subject to claims that we or our employees, consultants or independent contractors have inadvertently or otherwise improperly used or disclosed confidential information of these third parties or our employees’ former employers.

Further, we may be subject to ownership disputes in the future arising, for example, from conflicting obligations of consultants or others who are involved in developing our product candidates. We may also be subject to claims that former employees, consultants, independent contractors, collaborators or other third parties have an ownership interest in our patents or other intellectual property. Litigation may be necessary to defend against these and other claims challenging our right to and use of confidential and proprietary information. If we fail in defending any such claims, in addition to paying monetary damages, we may lose our rights therein. Such an outcome could have a material adverse effect on our business.

Even if we are successful in defending against these claims, litigation could result in substantial cost and be a distraction to our management and employees.

We may be subject to claims challenging the inventorship or ownership of our patents and other intellectual property.

We may also be subject to claims that former employees, collaborators or other third parties have an ownership interest in our patents and other intellectual property. We may be subject to ownership disputes in the future arising, for example, from conflicting obligations of consultants or others who are involved in developing our product candidates. Litigation may be necessary to defend against these and other claims challenging inventorship or ownership. If we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights, such as exclusive ownership of, or right to use, valuable intellectual property. Such an outcome could have a material adverse effect on our business. Even if we are successful in defending against such claims, litigation could result in substantial costs and be a distraction to management and other employees.

Our reliance on third parties requires us to share our trade secrets, which increases the possibility that a competitor will discover them or that our trade secrets will be misappropriated or disclosed.

Because we rely on third parties to assist with research and development and to manufacture our product candidates, we must, at times, share trade secrets with them. We seek to protect our proprietary technology in part by entering into confidentiality agreements and, if applicable, material transfer agreements, consulting agreements or other similar agreements with our advisors, employees, third-party contractors and consultants prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third parties to use or disclose our confidential information, including our trade secrets. Despite the contractual provisions employed when working with third parties, the need to share trade secrets and other confidential information increases the risk that such trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are disclosed or used in violation of these agreements. Given that our proprietary position is based, in part, on our know-how and trade secrets, a competitor’s discovery of our trade secrets or other unauthorized use or disclosure would impair our competitive position and may have a material adverse effect on our business.

In addition, these agreements typically restrict the ability of our advisors, employees, third-party contractors and consultants to publish data potentially relating to our trade secrets, although our agreements may contain certain limited publication rights. For example, any academic institution that we may collaborate with in the future will usually expect to be granted rights to publish data arising out of such collaboration, provided that we are notified in advance and given the opportunity to delay publication for a limited time period in order for us to secure patent protection of intellectual property rights arising from the collaboration, in addition to the opportunity to remove confidential or trade secret information from any such publication. In the future we may also conduct joint research and development programs that may require us to share trade secrets under the terms of our research and development or similar agreements. Despite our efforts to protect our trade secrets, our competitors may discover our trade secrets, either through breach of our agreements with third parties, independent development or publication of information by any of our third-party collaborators. A competitor’s discovery of our trade secrets would impair our competitive position and have an adverse impact on our business.

There is currently a limited market for our common stock, and any trading market that exists in our common stock may be highly illiquid and may not reflect the underlying value of our net assets or business prospects.

Although our common stock is traded on the Nasdaq Capital Market, there is currently a limited market for our common stock and there can be no assurance that an active market will ever develop. Investors are cautioned not to rely on the possibility that an active trading market may develop.

Our share price is volatile, and you may not be able to resell your shares at a profit or at all.

The market price of our common stock could be subject to significant fluctuations. The market prices for securities of pharmaceutical and biotechnology companies, and early-stage drug discovery and development companies like ours in particular, have historically been highly volatile and may continue to be highly volatile in the future. The following factors, in addition to other risk factors described in this section, may have a significant impact on the market price of our common stock:

Broad market and industry factors, as well as economic and political factors, also may materially adversely affect the market price of our common stock.

We are a defendant in securities litigation, which may be costly and time-consuming to defend.

Following periods of market volatility in the price of a company’s securities or the reporting of unfavorable news, security holders have often instituted class action litigation. This risk is especially relevant for us because pharmaceutical companies like ours have experienced significant stock price volatility in recent years. Moreover, we were named in a putative securities class action complaint and several stockholders’ derivative suits as a result of the decline in our stock price following the June 25, 2019 announcement that we had received a Complete Response Letter from the FDA regarding our NDA for EDSIVO™. See Item 1 – Legal Proceedings for additional information. Regardless of the outcome, we could incur substantial legal costs and our management’s attention could be diverted from the operation of our business, causing our business to suffer.

Our “blank check” preferred stock could be issued to prevent a business combination not desired by management or our majority stockholders.

Our charter authorizes the issuance of “blank check” preferred stock with such designations, rights and preferences as may be determined by our Board of Directors without stockholder approval. Our preferred stock could be utilized as a method of discouraging, delaying, or preventing a change in control and as a method of preventing stockholders from receiving a premium for their shares in connection with a change of control.

Future sales of our common stock could cause dilution, and the sale of such common stock, or the perception that such sales may occur, could cause the price of our stock to decline.

Sales of additional shares of our common stock, as well as securities convertible into or exercisable for common stock, could result in substantial dilution to our stockholders and cause the market price of our common stock to decline. An aggregate of 10,612,731 shares of common stock were outstanding as of June 30, 2020. As of such date, another 1,381,975 shares of common stock were issuable upon exercise of outstanding options. A substantial majority of the outstanding shares of our common stock, as well as a substantial majority of the shares of common stock issuable upon exercise of outstanding options, are freely tradable without restriction or further registration under the Securities Act of 1933.

We may sell additional shares of common stock, as well as securities convertible into or exercisable for common stock, in subsequent public or private offerings. We may also issue additional shares of common stock, as well as securities convertible into or exercisable for common stock, to finance future acquisitions. We will need to raise additional capital in order to initiate or complete additional development activities for all of our product candidates or to pursue additional disease indications for our product candidates, and this may require us to issue a substantial amount of securities (including common stock as well as securities convertible into or exercisable for common stock). There can be no assurance that our capital raising efforts will be able to attract the capital needed to execute on our business plan and sustain our operations. Moreover, we cannot predict the size of future issuances of

our common stock, as well as securities convertible into or exercisable for common stock, or the effect, if any, that future issuances and sales of our securities will have on the market price of our common stock. Sales of substantial amounts of our common stock, as well as securities convertible into or exercisable for common stock, including shares issued in connection with an acquisition or securing funds to complete any clinical trial plans, or the perception that such sales could occur, may result in substantial dilution and may adversely affect prevailing market prices for our common stock.

On April 30, 2020, we entered into the purchase agreement with Lincoln Park, pursuant to which Lincoln Park has committed to purchase up to $15.0 million of our common stock. Upon the execution of the purchase agreement, we issued 148,148 commitment shares to Lincoln Park as consideration for its commitment to purchase shares of our common stock under the purchase agreement. The remaining shares of our common stock that may be issued under the purchase agreement may be sold by us to Lincoln Park at our discretion from time to time over a 36-month period commencing on June 8, 2020. The purchase price for the shares that we may sell to Lincoln Park under the purchase agreement will fluctuate based on the price of our common stock. Depending on market liquidity at the time, sales of such shares may cause the trading price of our common stock to fall.

We generally have the right to control the timing and amount of any sales of our shares to Lincoln Park under the purchase agreement. Sales of our common stock, if any, to Lincoln Park under the purchase agreement will depend upon market conditions and other factors to be determined by us. We may ultimately decide to sell to Lincoln Park all, some or none of the shares of our common stock that may be available for us to sell pursuant to the purchase agreement. If and when we do sell shares to Lincoln Park, after Lincoln Park has acquired the shares, Lincoln Park may resell all, some or none of those shares at any time or from time to time in its discretion. Therefore, sales to Lincoln Park by us could result in substantial dilution to the interests of other holders of our common stock. Additionally, the sale of a substantial number of shares of our common stock to Lincoln Park, or the anticipation of such sales, could make it more difficult for us to sell equity or equity-related securities in the future at a time and at a price that we might otherwise wish to effect sales.

We currently anticipate that no cash dividends will be paid on our common stock in the foreseeable future. While our dividend policy will be based on the operating results and capital needs of the business, it is anticipated that all earnings, if any, will be retained to finance the future expansion of our business.

We may issue debt and equity securities or securities convertible into equity securities, any of which may be senior to our common stock as to distributions and in liquidation, which could negatively affect the value of our common stock.

In the future, we may attempt to increase our capital resources by entering into debt or debt-like financing that is unsecured or secured by up to all of our assets, or by issuing additional debt or equity securities, which could include issuances of secured or unsecured commercial paper, medium-term notes, senior notes, subordinated notes, guarantees, preferred stock, hybrid securities, or securities convertible into or exchangeable for equity securities. In the event of our liquidation, our lenders and holders of our debt and preferred securities would receive distributions of available assets before distributions to the holders of our common stock. Because our decision to incur debt and issue securities in future offerings may be influenced by market conditions and other factors beyond our control, we cannot predict or estimate the amount, timing or nature of our future offerings or debt financings. Further, market conditions could require us to accept less favorable terms for the issuance of our securities in the future.

Because the Merger resulted in an ownership change under Section 382 of the Internal Revenue Code, our pre-Merger net operating loss carryforwards and certain other tax attributes will be subject to limitation or elimination. The net operating loss carryforwards and certain other tax attributes of Private Acer may also be subject to limitations as a result of ownership changes.

If a corporation undergoes an “ownership change” within the meaning of Section 382 of the Internal Revenue Code, the corporation’s net operating loss carryforwards and certain other tax attributes arising from before the ownership change are subject to limitations on use after the ownership change. In general, an ownership change occurs if there is a cumulative change in the corporation’s equity ownership by certain stockholders that exceeds fifty percentage points by value over a rolling three-year period. Similar rules may apply under state tax laws. The Merger resulted in an ownership change for us and, accordingly, our net operating loss carryforwards and certain other tax attributes will now be subject to limitation and possibly elimination. It is possible that Private Acer’s net operating loss carryforwards and certain other tax attributes may also be subject to limitation as a result of prior shifts in equity ownership and/or the Merger. Additional ownership changes in the future could result in additional limitations on our net operating loss carryforwards and certain other tax attributes. Consequently, even if we achieve profitability, we may not be able to utilize a material portion of our net operating loss carryforwards and certain other tax attributes, which could increase our tax obligations and thus have a material adverse effect on our cash flow and results of operations.

Because of their ownership of our common stock, insiders may influence significant corporate decisions.

As of June 30, 2020, our executive officers and directors and their affiliates beneficially owned or controlled approximately 18% of the outstanding shares of our common stock. Accordingly, these executive officers, directors and their affiliates will have substantial influence over the outcome of corporate actions requiring stockholder approval, including the election of directors, any merger, consolidation or sale of all or substantially all of our assets or any other significant corporate transactions. This concentration of ownership may also delay or prevent a change of control of our company, even if such a change of control would benefit our other stockholders.

Anti-takeover provisions in our organizational documents and Delaware law might discourage, delay or prevent an acquisition attempt or change in control of our company that you might consider favorable.

Our certificate of incorporation and bylaws contain provisions that may delay or prevent an acquisition or change in control of our company. Among other things, these provisions:

Further, as a Delaware corporation, we are also subject to provisions of Section 203 of the Delaware General Corporation Law regulating corporate takeovers. Section 203 generally prohibits us from engaging in a business combination with interested stockholders subject to certain exceptions.

These anti-takeover provisions and other provisions under Delaware law, our charter and our bylaws could discourage, delay or prevent a transaction involving an acquisition attempt or a change in control of our company, including actions that our stockholders may deem advantageous, or negatively affect the trading price of our common stock. These provisions could also discourage proxy contests and make it more difficult for you and other stockholders to elect directors of your choosing and to cause us to take other corporate actions you desire.

Our certificate of incorporation designates the Court of Chancery of the State of Delaware as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders, which could limit a stockholder’s ability to bring a claim in a judicial forum that the stockholder believes is more convenient or favorable for disputes with us or our directors, officers or other employees.

Our certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall be the sole and exclusive forum for:

Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations thereunder. As a result, the exclusive forum provision will not apply to suits brought to enforce any duty or liability created by the Exchange Act or any other claim for which the federal courts have exclusive jurisdiction. Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rules and regulations thereunder. As a result, the exclusive forum provision will not apply to suits brought to enforce any duty or liability created by the Securities Act or any other claim for which the federal and state courts have concurrent jurisdiction.

Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and consented to the provisions of our certificate of incorporation described above. This choice of forum provision may limit a stockholder’s ability to bring a claim in a judicial forum that the stockholder believes is more convenient or favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits against us and our directors, officers and other employees. Alternatively, if a court were to find these provisions of our certificate of incorporation inapplicable to, or unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could adversely affect our business, financial condition or results of operations.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Delaware	One Gateway Center, Suite 351 300 Washington Street	32-0426967
(State or other jurisdiction of	Newton, MA 02458	(I.R.S. Employer
Incorporation or organization)	(Address of principal executive	Identification No.)
	offices and zip code)


Securities registered pursuant to Section 12(b) of the Act:
Title of Each Class	Trading Symbol	Name of Each Exchange on Which Registered
Common Stock, $0.0001 par value per share	ACER	The Nasdaq Stock Market LLC

		Page

PART I – FINANCIAL INFORMATION

Item 1.	Financial Statements (Unaudited)

	Condensed Balance Sheets as of June 30, 2020 and December 31, 2019	1

	Condensed Statements of Operations: For the three and six months ended June 30, 2020 and 2019	2

	Condensed Statements of Changes in Stockholders’ Equity: For the three and six months ended June 30, 2020 and 2019	3

	Condensed Statements of Cash Flows: For the six months ended June 30, 2020 and 2019	4

	Notes to Condensed Financial Statements	5

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	16

Item 3.	Quantitative and Qualitative Disclosures About Market Risk	26

Item 4.	Controls and Procedures	26

PART II – OTHER INFORMATION

Item 1.	Legal Proceedings	27

Item 1A.	Risk Factors	27

Item 6.	Exhibits	62

Signatures		63

	2020	2019
Risk-free interest rate	1.14% – 1.61%	1.88% – 2.57%
Expected life (years)	6.25	6.25
Volatility	60%	60%
Dividend rate	0%	0%

Undiscounted lease liabilities for years ending December 31,:
2020 (remaining)	$	132,366
2021		273,158
2022		115,951
Total undiscounted lease liabilities	$	521,475
Less effects of discounting		(41,534	)
Total lease liabilities as of June 30, 2020	$	479,941

Reported as of June 30, 2020:
Other current liabilities	$	267,072
Other non-current liabilities		212,869
Total lease liabilities	$	479,941

Large accelerated filer	☐	Accelerated filer	☐

Non-accelerated filer	☑	Smaller reporting company	☑

		Emerging growth company	☐

Years Ending December 31:	Minimum Lease Payments
2020	$	263,392
2021		273,158
2022		115,951
Total	$	652,501

Exhibit No.		Description

10.1*&		Exclusive License Agreement, dated as of December 21, 2018, by and between Acer Therapeutics Inc. and Sanofi.

10.2		Research Collaboration Agreement, dated March 26, 2020, by and between Acer Therapeutics Inc. and the National Center for Advancing Translational Sciences (incorporated by reference to Exhibit 10.30 to the Company’s Registration Statement on Form S-1, as amended, (File No. 333-238192) filed on June 1, 2020).

10.3		Purchase Agreement, dated as of April 30, 2020, by and between Acer Therapeutics Inc. and Lincoln Park Capital Fund, LLC (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on April 30, 2020).

10.4		Registration Rights Agreement, dated as of April 30, 2020, by and between Acer Therapeutics Inc. and Lincoln Park Capital Fund, LLC (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K filed on April 30, 2020).

31.1*		Certification of Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*		Certification of Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1**		Certification of Principal Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2**		Certification of Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101*		Financial statements from the Quarterly Report on Form 10-Q of the Company as of and for the period ended June 30, 2020, formatted in Extensible Business Reporting Language (XBRL): (i) Condensed Balance Sheets; (ii) Condensed Statements of Operations; (iii) Condensed Statements of Changes in Stockholders’ Equity; (iv) Condensed Statements of Cash Flows; and (v) Notes to Condensed Financial Statements.

		ACER THERAPEUTICS INC.

Date: August 13, 2020	By:	/s/ Harry S. Palmin
		Harry S. Palmin Chief Operating Officer and Chief Financial Officer (Principal Financial and Accounting Officer)