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Balance Sheet Components - Summary of Accrued and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued research and development $ 3,602 $ 4,213
Compensation and related benefits 2,006 1,881
Accrued professional service expenses 217 207
Other 364 332
Total accrued and other current liabilities $ 6,189 $ 6,633