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Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Payables and Accruals [Abstract]    
Accrued payroll and related expenses $ 3,279 $ 3,339
Accrued external research and development expenses 11,240 2,274
Accrued professional fees 619 708
Accrued other 190 236
Total Accrued expenses and other current liabilities $ 15,328 $ 6,557