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Balance Sheets - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Current Assets:    
Cash and cash equivalents $ 40,041,641 $ 46,802,560
Prepaid expenses and other current assets 478,503 441,810
Total current assets 40,520,144 47,244,370
Property and equipment, net 1,056,332 521,378
Prepaid research and development expenses 759,531 696,531
Deposits 52,320  
Total assets 42,388,327 48,462,279
Current liabilities:    
Accounts payable 1,565,210 564,235
Accrued bonuses 1,432,485 1,037,112
Accrued expenses 3,267,371 6,145,631
Deferred rent 68,551  
Total current liabilities 6,333,617 7,746,978
Deferred rent, net of current portion 753,579 243,647
Total liabilities 7,087,196 7,990,625
Stockholders' equity:    
Preferred stock; $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding at December 31, 2016 and December 31, 2015
Common stock; $0.001 par value; 100,000,000 shares authorized, 23,250,023 shares issued and outstanding at December 31, 2016; 100,000,000 shares authorized, 19,050,204 shares issued and outstanding at December 31, 2015 23,249 19,049
Additional paid-in capital 154,254,193 127,619,078
Accumulated deficit (118,976,311) (87,166,473)
Total stockholders' equity 35,301,131 40,471,654
Total liabilities and stockholders' equity $ 42,388,327 $ 48,462,279