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Balance Sheet Components - Summary of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Payables And Accruals [Abstract]    
Accrued research and development costs $ 43,939 $ 39,147
Employee-related 7,393 18,618
Professional services 11,201 8,893
Other 518 617
Total accrued expenses $ 63,051 $ 67,275