Accrued Expenses

6 Months Ended

Jun. 30, 2021

Accrued Liabilities Current [Abstract]

Accrued Expenses

8. Accrued Expenses

Accrued expenses consist of the following as of June 30, 2021 and December 31, 2020 (in thousands):

	June 30, 2021		December 31, 2020
Research and development expenses	$	10,504	$	5,821
Payroll and payroll-related		2,319		2,918
Professional fees		1,590		1,585
Other		255		6
Accrued expenses	$	14,668	$	10,330