Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Components of Accrued Liabilities

Accrued liabilities comprise the following (in thousands):

	December 31, 2021		December 31, 2020
Accrued liabilities:
General and administrative	$	794	$	1,577
Clinical trial related costs		1,134		1,743
Non-clinical research and manufacturing operations		2,153		4,321
Payroll related		5,388		4,908
Other accrued expenses		46		26
Total Accrued liabilities	$	9,515	$	12,575