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Statements of Operations and Comprehensive Loss - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Statements of Operations and Comprehensive Loss        
Revenue from collaboration and license agreements $ 86,560 $ 75,000 $ 1,142,142
Costs and expenses:        
Research and development expense 4,922,857 13,281,554 22,500,058 34,596,071
General and administrative expense 3,844,579 4,141,952 14,355,644 12,567,404
Total costs and expenses 8,767,436 17,423,506 36,855,702 47,163,475
Loss from operations (8,767,436) (17,336,946) (36,780,702) (46,021,333)
Interest income 243,597 4,625 336,255 15,692
Net loss and comprehensive loss $ (8,523,839) $ (17,332,321) $ (36,444,447) $ (46,005,641)
Basic net loss per common share (in dollars per share) $ (0.16) $ (0.34) $ (0.70) $ (0.90)
Diluted net loss per common share (in dollars per share) $ (0.16) $ (0.34) $ (0.70) $ (0.90)
Basic weighted-average number of common shares outstanding (in shares) 52,423,944 51,564,674 52,387,561 51,266,955
Diluted weighted-average number of common shares outstanding (in shares) 52,423,944 51,564,674 52,387,561 51,266,955