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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Prepaid research and development services $ 0 $ 196
Prepaid insurance 651 264
Other prepaid expenses 213 182
Other current assets 554 4,906
Total prepaid expenses and other current assets $ 1,418 $ 5,548