Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Cash and Cash Equivalents

Cash and cash equivalents consist of the following:

	March 31, 2016		December 31, 2015
	(in thousands)
Cash	$	1,653	$	1,576
Cash equivalents:
Money market accounts		139,218		148,604
Total cash and cash equivalents	$	140,871	$	150,180

Summary of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following:

	March 31, 2016		December 31, 2015
	(in thousands)
Prepaid research and development project costs	$	816	$	878
Prepaid insurance		286		480
Other receivables		303		44
Other		341		271
Total prepaid expenses and other current assets	$	1,746	$	1,673

Summary of Property and Equipment, Net

Property and equipment, net consists of the following:

	March 31, 2016			December 31, 2015
	(in thousands)
Computer equipment	$	258		$	242
Software		150			126
Lab equipment		236			236
Leasehold improvements		106			79
Furniture and fixtures		47			5
Property and equipment, gross		797			688
Less: accumulated depreciation		(174	)		(122	)
Total property and equipment, net	$	623		$	566

Summary of Accrued Liabilities

Accrued liabilities consist of the following:

	March 31, 2016		December 31, 2015
	(in thousands)
Accrued research and development costs	$	3,608	$	4,318
Accrued employee related costs		965		1,529
Accrued professional fees		540		933
Other		229		236
Total accrued liabilities	$	5,342	$	7,016