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Balance Sheet Details - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Research and development $ 1,535 $ 779
Clinical Trials 1,314 518
Legal fees 159 154
Compensation 1,591 1,955
Other 39 25
Total accrued liabilities $ 4,638 $ 3,431