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Consolidated Statements of Operations - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Operating expenses:        
Research and development $ 4,471,126 $ 5,568,777 $ 15,463,706 $ 15,393,089
General and administrative 1,826,290 1,639,026 5,256,481 4,524,859
Total operating expenses 6,297,416 7,207,803 20,720,187 19,917,948
Loss from operations (6,297,416) (7,207,803) (20,720,187) (19,917,948)
Interest and amortization of debt discount/premium (expense) income (343,234) 13,219 (999,818) 45,233
Tax credit 207,114   207,114  
Net loss $ (6,433,536) $ (7,194,584) $ (21,512,891) $ (19,872,715)
Net loss per common share, basic and diluted $ (0.27) $ (0.38) $ (0.97) $ (1.04)
Weighted average common shares outstanding, basic and diluted 23,634,040 19,149,906 22,270,885 19,149,579