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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]    
Collaboration revenue $ 2,702 $ 1,666
Operating expenses:    
Research and development 100,392 89,398
General and administrative 32,573 22,211
Total operating expenses 132,965 111,609
Loss from operations (130,263) (109,943)
Other income:    
Interest income 1,569 6,027
Total other income 1,569 6,027
Net loss $ (128,694) $ (103,916)
Net loss per share-basic and diluted $ (2.80) $ (2.47)
Weighted average common shares outstanding-basic and diluted 45,910,787 42,117,690