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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued research and development expenses $ 4,775 $ 5,042
Accrued payroll and related expenses 553 1,098
Accrued other 512 452
Total accrued expenses $ 5,840 $ 6,592