Property and Equipment, Net

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Property and Equipment, Net

3. Property and Equipment, Net

Property and equipment, net consisted of the following:

	December 31,
	2018			2017
	(in thousands)
Laboratory equipment	$	22,453		$	16,704
Office furniture and equipment	960			960
Computer equipment	929			845
Leasehold improvements	898			656
Computer software	433			436
Total property and equipment		25,673			19,601
Less: accumulated depreciation and amortization		(8,612	)		(4,329	)
Property and equipment, net	$	17,061		$	15,272

Depreciation and amortization expense was $4.5 million, $3.0 million and $1.1 million for the years ended December 31, 2018, 2017 and 2016, respectively.