Supplemental Balance Sheet Information

6 Months Ended

Jun. 30, 2018

Supplemental Balance Sheet Information [Abstract]

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

Property and equipment, net

	June 30, 2018			December 31, 2017
Scientific equipment	$	1,954		$	1,797
Leasehold improvements	192			192
Furniture and fixtures	41			31
Computers and software	26			26
Construction in process	—			120
Property and equipment, gross	2,213			2,166
Less: accumulated depreciation	(1,007		)	(849		)
Property and equipment, net	$	1,206		$	1,317

Depreciation and amortization expense was $90 and $51 for the three months ended June 30, 2018 and 2017, respectively, and $176 and $89, for the six months ended June 30, 2018 and 2017, respectively.

Accrued expenses and other current liabilities

	June 30, 2018		December 31, 2017
Accrued legal expenses	$	735	$	251
Accrued payroll-related expenses	539		718
Other accrued expenses	378		304
Accrued expenses and other current liabilities	$	1,652	$	1,273