Balance Sheet Items - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 84	$ 26
Less: accumulated depreciation	(12)	(6)
Property, and equipment, net	72	20
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	39	26
Laboratory equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 45	$ 0

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