Accrued Expenses and Other Current Liabilities

6 Months Ended

Jun. 30, 2019

Payables And Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

5. Accrued Expenses and Other Current Liabilities

	June 30, 2019		December 31, 2018
Accrued external research and development expenses	$	3,583	$	4,541
Accrued payroll and related expenses		1,654		2,379
Accrued professional fees		636		917
Accrued other		543		426
	$	6,416	$	8,263