Balance Sheet Components - Summary of Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accrued Liabilities, Current [Abstract]
Accrued research and development-related expenses	$ 1,714	$ 495
Accrued research and development-related expenses-related party		500
Accrued professional services expenses	91	50
Accrued offering costs		313
Other		41
Total accrued liabilities	$ 1,805	$ 1,399