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Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Operating expenses:        
Research and development $ 12,161 $ 7,153 $ 28,959 $ 21,849
General and administrative 5,131 4,715 16,242 14,133
Total operating expenses 17,292 11,868 45,201 35,982
Loss from operations (17,292) (11,868) (45,201) (35,982)
Other income:        
Interest income 499 49 782 115
Other (expense) income, net (14) 4 (64) 30
Total other income, net 485 53 718 145
Loss before income taxes (16,807) (11,815) (44,483) (35,837)
Income tax expense (13) (20) (40) (73)
Net loss $ (16,820) $ (11,835) $ (44,523) $ (35,910)
Net loss per share, basic $ (0.44) $ (0.47) $ (1.50) $ (1.64)
Net loss per share, diluted $ (0.44) $ (0.47) $ (1.50) $ (1.64)
Weighted average common stock outstanding, basic 38,511,655 25,148,336 29,743,579 21,842,706
Weighted average common stock outstanding, diluted 38,511,655 25,148,336 29,743,579 21,842,706
Other comprehensive loss:        
Net loss $ (16,820) $ (11,835) $ (44,523) $ (35,910)
Unrealized gain (loss) on available-for-sale securities, net of tax 31 2 (812) (5)
Foreign exchange translation adjustment, net of tax (138) 5 (198) (38)
Comprehensive loss $ (16,927) $ (11,828) $ (45,533) $ (35,953)