Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Total property and equipment	$ 59,775	$ 52,445
Less: accumulated depreciation and amortization	(10,391)	(9,425)
Total property and equipment, net	49,384	43,020
Construction in Progress
Property Plant And Equipment [Line Items]
Total property and equipment	22,961	32,561
Laboratory Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	12,172	11,891
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	23,603	7,241
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	821	534
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Total property and equipment	$ 218	$ 218