Accrued Expenses and Other Current Liabilities

3 Months Ended

Mar. 31, 2020

Accrued Expenses and Other Current Liabilities

4. Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	March 31, 2020		December 31, 2019
Accrued external research and development expenses	$	6,072	$	6,516
Accrued payroll and related expenses		1,199		3,247
Deferred rent, current portion		601		601
Accrued professional fees		586		660
Accrued other		298		279
	$	8,756	$	11,303