Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 13,192,000	$ 9,663,000
Prepaid expenses and other current assets	1,010,000	697,000
Total current assets	14,202,000	10,360,000
Restricted cash	700,000	800,000
Property and equipment, net	3,432,000	3,249,000
Operating lease right-of-use asset	2,700,000
In-process research and development	10,256,000
Goodwill	3,490,000
Other assets	136,000	136,000
Total assets	34,916,000	14,545,000
Current liabilities
Accounts payable and accrued liabilities	1,768,000	536,000
Accrued compensation	1,833,000	191,000
Deferred rent		335,000
Current portion of operating lease liabilities	1,264,000
Deferred asset acquisition consideration	769,000	970,000
Total current liabilities	5,634,000	2,032,000
Deferred rent, net of current portion		810,000
Operating lease liabilities, net of current portion	2,413,000
Deferred asset acquisition consideration, net of current portion	1,162,000	2,892,000
Asset acquisition derivative liability		1,117,000
Deferred tax liability	3,077,000
Total liabilities	12,286,000	6,851,000
Stockholders' equity
Common stock, $0.01 par value; 217,000,000 shares authorized; 9,958,546 and 5,069,633 issued and outstanding at June 30, 2019 and December 31, 2018, respectively.	99,000	51,000
Additional paid-in capital	168,509,000	145,685,000
Accumulated deficit	(145,978,000)	(138,042,000)
Total stockholders' equity	22,630,000	7,694,000
Total liabilities and stockholders' equity	$ 34,916,000	$ 14,545,000

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- Definition

Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.