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Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Prepaid Expense and Other Assets, Current [Abstract] |  |
Other prepaid assets | $ 434 | $ 138
Prepaid insurance | 404 | 389
Prepaid research and development expenses | 192 | 4
Research and development tax credit receivable | 98 | 18
Right of use assets, net | 0 | 65
Total | $ 1,128 | $ 614

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