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STATEMENTS OF OPERATIONS - USD ($)
 3 Months Ended 6 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Income Statement [Abstract]        
Grant and other income $ 131,962 $ 17,175 $ 245,859 $ 34,433
Operating Expenses:        
Research and development 2,962,297 6,578,618 5,288,311 10,126,875
General & administrative 1,375,410 1,345,114 4,074,723 2,752,123
Total operating expenses 4,337,707 7,923,732 9,363,034 12,878,998
Operating loss (4,205,745) (7,906,557) (9,117,175) (12,844,565)
Gain (loss) on derivative instruments 1,154,815 (48,700) 196,585 8,879,612
Interest expense, net (1,657,205) (471,234) (1,975,375) (940,385)
Net loss available to common shareholders $ (4,708,135) $ (8,426,491) $ (10,895,965) $ (4,905,338)
Net loss per common share        
Basic $ (0.31) $ (1.15) $ (0.81) $ (0.74)
Diluted $ (0.31) $ (1.15) $ (0.81) $ (0.78)
Weighted average common shares outstanding        
Basic 15,210,296 7,319,761 13,403,878 6,649,814
Diluted 15,210,296 7,319,761 13,403,878 6,682,592