Accounts payable and other liabilities (Tables)

12 Months Ended

Dec. 31, 2021

Payables and Accruals [Abstract]

Schedule of Accounts Payable and Other Liabilities

Accrued liabilities consist of the following (in thousands):

	December 31,
	2021		2020
Trade accounts payable	$	526	$	1,323
Accrued clinical and preclinical expenses	2,399		1,687
Accrued compensation and vacation	3,263		3,244
Other accrued liabilities	1,227		927
	$	7,415	$	7,181