Accrued Expenses and Other Current Liabilities (Tables)

9 Months Ended

Sep. 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):

	September 30, 2016		December 31, 2015
Research costs - Nordic (1)	$	2,224	$	2,898
Research costs - other	8,491		5,178
Payroll and employee benefits	5,704		3,330
Professional fees	6,152		3,546
Other current liabilities	$	71	$	—
Total accrued expenses and other current liabilities	$	22,642	$	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.