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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Payables And Accruals [Abstract]    
External research and development $ 5,905 $ 5,666
Payroll and employee related expenses 3,581 4,280
Accrued consulting and other professional fees 6,331 2,820
Other accrued expenses 439 258
Total accrued expenses $ 16,256 $ 13,024