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Unaudited Statements of Operations and Comprehensive Loss - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Unaudited Statements of Operations and Comprehensive Loss        
Revenue $ 1,000,000 $ 10,000,000
Costs and expenses:        
Research and development expense 10,669,767 10,724,178 33,208,840 35,562,202
General and administrative expense 4,057,530 3,380,932 12,732,207 10,491,991
Total costs and expenses 14,727,297 14,105,110 45,941,047 46,054,193
Loss from operations (13,727,297) (14,105,110) (35,941,047) (46,054,193)
Interest income 4,762 853,228 476,879 2,888,599
Net loss and comprehensive loss $ (13,722,535) $ (13,251,882) $ (35,464,168) $ (43,165,594)
Basic and diluted net loss per common share (in dollars per share) $ (0.29) $ (0.31) $ (0.79) $ (1.00)
Basic and diluted weighted-average number of common shares (in shares) 47,511,818 43,295,397 44,962,886 43,215,125