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Balance Sheet Components - Schedule of Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepaid research and development contract services | $ 1,206 | $ 1,883
Advanced professional fees | 243 | 300
Prepaid insurance | 347 | 376
Other prepaid expenses and other current assets | 101 | 173
Total prepaid and other current assets | $ 1,897 | $ 2,732

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