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Balance Sheet Details - Schedule of Accounts Payable (Detail) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Clinical costs | $ 7,349 | $ 7,561
Legal and audit costs | 130 | 31
Other | 439 | 254
Total | $ 7,918 | $ 7,846

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