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Statements of Operations and Comprehensive Loss - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Statements of Operations and Comprehensive Loss        
Revenue from collaboration and license agreements $ 75,000 $ 142 $ 75,000 $ 1,055,582
Costs and expenses:        
Research and development expense 7,973,278 10,167,282 17,577,200 21,314,517
General and administrative expense 5,454,877 4,237,342 10,511,065 8,425,452
Total costs and expenses 13,428,155 14,404,624 28,088,265 29,739,969
Loss from operations (13,353,155) (14,404,482) (28,013,265) (28,684,387)
Interest income 85,588 5,221 92,657 11,067
Net loss and comprehensive loss $ (13,267,567) $ (14,399,261) $ (27,920,608) $ (28,673,320)
Basic net loss per common share (in dollars per share) $ (0.25) $ (0.28) $ (0.53) $ (0.56)
Diluted net loss per common share (in dollars per share) $ (0.25) $ (0.28) $ (0.53) $ (0.56)
Basic weighted-average number of common shares outstanding (in shares) 52,407,347 51,539,010 52,369,369 51,118,096
Diluted weighted-average number of common shares outstanding (in shares) 52,407,347 51,539,010 52,369,369 51,118,096