Accrued expenses (Tables)

12 Months Ended

Dec. 31, 2022

Accrued expenses

Schedule of accrued expenses

Accrued expenses consist of the following:

	As of December 31,
	2022		2021
	(in thousands)
Employee compensation costs	$	4,559	$	5,022
Research and development costs		1,895		3,719
Accrued goods and services		636		1,482
Professional services		726		727
Total	$	7,816	$	10,950