Accrued expenses

12 Months Ended

Dec. 31, 2020

Accrued expenses

Accrued expenses

6. Accrued expenses

Accrued expenses consist of the following:

	As of December 31,
	2020		2019
	(in thousands)
Research and development costs	$	6,624	$	13,248
Employee compensation costs		5,857		5,733
Professional services		1,153		897
Accrued goods and services		496		1,386
Other		75		252
Total	$	14,205	$	21,516