Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Payables And Accruals [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

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

	December 31,
	2017		2016
Accrued external research and development expenses	$	1,770	$	627
Accrued payroll and related expenses		1,369		1,018
Accrued professional fees		878		1,062
Accrued other		304		221
	$	4,321	$	2,928