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Balance Sheet Components - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]    
Clinical trial accruals $ 8,782 $ 13,217
Accrued compensation 5,907 9,130
Accrued expenses and other current liabilities 3,774 3,193
Total accrued liabilities $ 18,463 $ 25,540