Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 668	$ 1,162
Less: accumulated depreciation	(601)	(1,009)
Total property and equipment, net	67	153
Laboratory Equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	0	102
Computer Equipment
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	146	146
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	416	432
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Total property and equipment, gross	$ 106	$ 482

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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