Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 7,938	$ 7,590
Less: accumulated depreciation	(3,710)	(2,431)
Total property and equipment, net	4,228	5,159
Laboratory Equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	3,928	3,852
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	3,439	3,195
Computer Equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	146	130
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 425	409
Construction in Progress
Property, Plant and Equipment [Line Items]
Total property and equipment, gross		$ 4