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Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued employee compensation and benefits $ 1,365 $ 5,596
Accrued external research and development expenses 4,697 3,079
Accrued professional fees 718 495
Other 230 392
Total $ 7,010 $ 9,562