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Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Payables and Accruals [Abstract] |  |
Research costs | $ 16,714 | $ 11,179
Employee compensation and related benefits | 11,555 | 21,572
Process development and manufacturing costs | 6,864 | 3,525
Professional fees | 3,533 | 3,381
Other | 2,238 | 7,811
Total | $ 40,904 | $ 47,468

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