Property and equipment, net

3 Months Ended

Mar. 31, 2016

Property Plant And Equipment [Abstract]

5. Property and equipment, net

Property and equipment, net, consists of the following (in thousands):

	March 31, 2016			December 31, 2015
Computer equipment and software	$	1,292		$	1,259
Office equipment		1,347			1,104
Laboratory equipment		12,513			10,520
Leasehold improvements		13,925			11,010
Construction-in-progress		75,719			65,542
Total property and equipment, gross		104,796			89,435
Less accumulated depreciation and amortization		(8,158	)		(6,821	)
Total Property and equipment, net	$	96,638		$	82,614

Construction-in-progress as of March 31, 2016 includes $74.7 million related to construction costs incurred by the landlord at 60 Binney Street in Cambridge, Massachusetts. Please refer to Note 7, "Commitments and contingencies," for further information.