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Balance Sheet Components - Schedule of Accrued Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Balance Sheet Related Disclosures [Abstract] |  |
Accrued payroll and related expenses | $ 3,964 | $ 2,887
Accrued research and development expenses | 1,665 | 3,666
Accrued professional service fees | 638 | 1,520
Liability for early exercised stock options | 89 | 205
Other | 492 | 384
Accrued and other liabilities | $ 6,848 | $ 8,662

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