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Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Accounts Payable and Accrued Expenses    
Accounts payable $ 4 $ 1,434
Accrued research projects 70 64
Accrued compensation and benefits 606 565
Accrued professional fees and other 519 1,909
Total $ 1,199 $ 3,972