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Balance Sheet Details - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Accrued Liabilities, Current [Abstract]    
Accrued personnel costs $ 1,443 $ 2,152
Accrued research and development costs 1,135 516
Current portion of operating lease liability 503 489
Accrued other 498 506
Total $ 3,579 $ 3,663