Accrued expenses

3 Months Ended

Mar. 31, 2021

Accrued expenses

Accrued expenses

4. Accrued expenses

Accrued expenses consisted of the following:

(in thousands)	March 31, 2021		December 31, 2020
Deferred research obligations	$	667	$	—
Compensation and related benefits		255		845
Professional fees, contractors and other		247		527
	$	1,169	$	1,372