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Intangible Assets, Net - Schedule of Finite-Lived Intangible Assets (Detail) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024 | Jun. 30, 2024
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Goodwill and Intangible Assets Disclosure [Abstract] |  |  |
Capitalized milestone payments | $ 13,360,000 | $ 7,500,000 |
Less accumulated depreciation | (388,000) | (129,000) |
Total | $ 12,972,000 | $ 7,371,000 | $ 0

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