Accrued Expenses (Tables)

3 Months Ended

Mar. 31, 2013

Accrued Expenses

Accrued expenses consisted of the following (in thousands):

	March 31, 2013		December 31, 2012
	(unaudited)
Accrued clinical and research services	$	3,040	$	3,216
Accrued compensation and benefits		723		413
Accrued professional fees		308		364
Other		88		146
Total	$	4,159	$	4,139