Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Prepaid research and development	$ 5,793	$ 5,218
Prepaid clinical trial	2,705	3,298
Deferred offering costs	566	545
Prepaid bonus	136	427
Prepaid insurance	120	148
Other	941	863
Total prepaid expenses and other current assets	$ 10,261	$ 10,499