Accrued Expenses (Tables)

112 Months Ended

Dec. 31, 2012

Component of Accrued Expenses

Accrued expenses consist of the following:

	December 31,
(in thousands)	2012		2011
Professional services	$	835	$	1,131
Clinical consulting services		9,628		6,913
Preclinical services		411		1,093
Manufacturing services		3,217		767
Accrued vacation		452		307
Other consulting services		903		347
Payroll taxes and benefits		585		263
Severance		474		—
Employee compensation		11		—
Accrued expenses	$	16,516	$	10,821