Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2013

Accrued Expenses

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

	September30, 2013		December31, 2012
Research and development related	$	14,407	$	4,217
Legal and accounting fees		323		507
Deferred rent		866		831
Accrued offering costs		66		1,506
Other		298		338
Total accrued and other liabilities	$	15,960	$	7,399