Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components - Components of Accrued Liabilities (Detail)

v3.19.1
Balance Sheet Components - Components of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Accrued Liabilities Current [Abstract]    
General and administrative $ 440 $ 297
Clinical trial related costs 889 598
Non-clinical research and manufacturing operations 3,788 2,644
401(k) contributions payable 19 0
Payroll related 828 1,787
Other accrued expenses 15 31
Total accrued liabilities $ 5,979 $ 5,357