Accrued Expenses and Other Current Liabilities (Tables)

6 Months Ended

Jun. 30, 2016

Payables and Accruals [Abstract]

Schedule of accrued expenses and other current liabilities

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

	June 30, 2016		December 31, 2015
Research costs - Nordic(1)	$	2,675	$	2,898
Research costs - other	5,530		5,178
Payroll and employee benefits	3,607		3,330
Professional fees	4,733		3,546
Total accrued expenses and other current liabilities	$	16,545	$	14,952

(1) Includes amounts accrued ratably over the estimated per patient treatment period under the Work Statement NB-3 with Nordic Bioscience Clinical Development VII A/S (“Nordic”).  Amounts do not include pass-through costs which are expensed as incurred or upon delivery.  See note 8 for additional information.