Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components - Components of Accrued Liabilities (Detail)

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Balance Sheet Components - Components of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Accrued Liabilities Current [Abstract]    
General and administrative $ 1,275 $ 1,577
Clinical trial related costs 1,454 1,743
Non-clinical research and manufacturing operations 4,271 4,321
Payroll related 2,791 4,908
Other accrued expenses 10 26
Total Accrued liabilities $ 9,801 $ 12,575