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Balance Sheets - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Current Assets:    
Cash and cash equivalents $ 34,590,578 $ 40,041,641
Prepaid expenses and other current assets 697,063 478,503
Total current assets 35,287,641 40,520,144
Property and equipment, net 1,074,515 1,056,332
Prepaid research and development expenses 759,531 759,531
Deposits 52,320 52,320
Total assets 37,174,007 42,388,327
Current liabilities:    
Accounts payable 511,714 1,565,210
Accrued bonuses 387,941 1,432,485
Accrued expenses 3,563,513 3,267,371
Deferred rent 70,598 68,551
Total current liabilities 4,533,766 6,333,617
Deferred rent, net of current portion 754,055 753,579
Total liabilities 5,287,821 7,087,196
Stockholders' equity:    
Preferred stock; $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding at March 31, 2017 and December 31, 2016
Common stock; $0.001 par value; 100,000,000 shares authorized, 23,855,934 shares issued and outstanding at March 31, 2017; 100,000,000 shares authorized, 23,250,023 shares issued and outstanding at December 31, 2016 23,854 23,249
Additional paid-in capital 158,789,683 154,254,193
Accumulated deficit (126,927,351) (118,976,311)
Total stockholders' equity 31,886,186 35,301,131
Total liabilities and stockholders' equity $ 37,174,007 $ 42,388,327