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Balance Sheet Components - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
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Accrued Expenses And Other Current Liabilities [Abstract] |  |
Accrued external research and development expenses | $ 262 | $ 280
Accrued compensation | 2,253 | 2,888
Accrued consulting and professional fees | 915 | 875
Accrued Financing Costs | 4 | 3,326
Accrued other | 250 | 164
Total accrued expenses and other current liabilities | $ 3,684 | $ 7,533

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