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Balance Sheet Components - Summary of Accrued liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Schedule Of Accrued Liabilities [Line Items]    
Accrued clinical trial and manufacturing costs $ 4,201 $ 4,340
Accrued personnel costs 494 497
Other accrued liabilities 799 522
Total accrued liabilities $ 5,494 $ 5,359