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Balance Sheet Details - Summary of Prepaid and Other Current Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Balance Sheet Related Disclosures [Abstract]    
Insurance $ 557 $ 626
Prepaid rent 84 81
Pre-clinical and clinical related expenses 13 64
Other 61 77
Total $ 715 $ 848