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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Prepaid Expense and Other Assets [Abstract] |  |
Prepaid research and development expenses | $ 8,192 | $ 1,994
Interest receivable | 943 | 332
Prepaid insurance | 43 | 682
Other prepaid expenses and other assets | 371 | 377
Total prepaid expenses and other current assets | $ 9,549 | $ 3,385

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