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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued employee compensation and benefits $ 350 $ 1,763
Accrued external research and development expenses 962 1,633
Accrued professional fees 740 901
Other 370 549
Total accrued expenses $ 2,422 $ 4,846