Other Financial Statement Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Other Financial Statement Information [Abstract]
Prepaid clinical and drug manufacturing costs	$ 6,718	$ 320
Prepaid insurance	2,260	1,193
Prepaid equity financing costs	296	275
Prepaid rent	219	219
Prepaid recruiting fees	106	253
Prepaid audit fees	35	123
Other	776	480
Total prepaid expenses and other current assets	$ 10,410	$ 2,863