Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 68,783,210	$ 20,264,109
Prepaid research and development contracts	428,845	313,140
Other current assets	213,461	322,221
Total current assets	69,425,516	20,899,470
Furniture and equipment, net	92,056	107,223
Deposits	20,960	20,960
Total assets	69,538,532	21,027,653
Current liabilities:
Accounts payable and accrued expenses	2,965,457	3,592,164
Deferred revenue	18,666,667
Total current liabilities	21,632,124	3,592,164
Commitments and contingencies (Note 10)
Stockholders’ equity:
Common stock, $0.0001 par value per share; 300,000,000 shares authorized and 38,833,507 and 27,070,038 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively.	3,884	2,707
Additional paid-in capital	169,880,703	125,995,438
Accumulated deficit	(121,978,179)	(108,562,656)
Total stockholders’ equity	47,906,408	17,435,489
Total liabilities and stockholders’ equity	$ 69,538,532	$ 21,027,653

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

Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.