Accrued Expenses

12 Months Ended

Dec. 31, 2018

Payables and Accruals [Abstract]

Accrued Expenses

6. Accrued Expenses

Accrued expenses consisted of the following:

	December 31,
	2018		2017
Compensation and benefit costs	$	2,616	$	794
Research and development costs		3,969		831
Consulting and professional fees		320		267
Preferred stock issuance cost		—		85
Other liabilities		917		121
	$	7,822	$	2,098