Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Total property and equipment	$ 65,769	$ 52,445
Less: accumulated depreciation and amortization	(13,575)	(9,425)
Total property and equipment, net	52,194	43,020
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	23,605	7,241
Laboratory Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	19,957	11,891
Manufacturing equipment
Property Plant And Equipment [Line Items]
Total property and equipment	17,468
Construction in Progress
Property Plant And Equipment [Line Items]
Total property and equipment	2,933	32,561
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Total property and equipment	904	218
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	$ 902	$ 534