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Consolidated Statements of Operations - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Operating expenses:        
Research and development $ 5,007,361 $ 5,298,060 $ 10,992,580 $ 9,824,312
General and administrative 1,743,377 1,529,220 3,430,191 2,885,833
Total operating expenses 6,750,738 6,827,280 14,422,771 12,710,145
Loss from operations (6,750,738) (6,827,280) (14,422,771) (12,710,145)
Interest and amortization of debt discount/premium (expense) income (333,578) 15,090 (656,584) 32,014
Net loss $ (7,084,316) $ (6,812,190) $ (15,079,355) $ (12,678,131)
Net loss per common share, basic and diluted $ (0.30) $ (0.36) $ (0.70) $ (0.66)
Weighted average common shares outstanding, basic and diluted 23,595,702 19,149,417 21,578,011 19,149,417