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STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Operating expenses:    
Research and development $ 19,516 $ 16,828
General and administrative 6,162 6,430
Total operating expenses 25,678 23,258
Loss from operations (25,678) (23,258)
Other income:    
Interest income, net 1,733 99
Total other income 1,733 99
Net loss (23,945) (23,159)
Other comprehensive income (loss):    
Unrealized gain (loss) on investments 792 (699)
Comprehensive loss $ (23,153) $ (23,858)
Net loss per share, basic $ (0.53) $ (0.59)
Net loss per share, diluted $ (0.53) $ (0.59)
Weighted-average shares outstanding, basic 45,090,166 39,431,722
Weighted-average shares outstanding, diluted 45,090,166 39,431,722