Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Cash and Cash Equivalents

Cash and cash equivalents consist of the following:

	September 30, 2015		December 31, 2014
	(in thousands)
Cash	$	1,542	$	1,307
Cash equivalents:
Money market accounts		155,766		27,847
Total cash and cash equivalents	$	157,308	$	29,154

Summary of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following:

	September 30, 2015		December 31, 2014
	(in thousands)
Prepaid research and development project costs	$	444	$	515
Prepaid insurance		642		23
Other		194		23
Total prepaid expenses and other current assets	$	1,280	$	561

Summary of Property and Equipment, Net

Property and equipment, net consists of the following:

	September 30, 2015			December 31, 2014
	(in thousands)
Computer equipment	$	185		$	56
Software		144			9
Lab equipment		241			163
Leasehold improvements		80			—
Property and equipment, gross		650			228
Less: accumulated depreciation		(85	)		(14	)
Total property and equipment, net	$	565		$	214

Schedule of Other Assets

Other assets consist of the following:

	September 30, 2015		December 31, 2014
	(in thousands)
Deferred offering costs	$	—	$	549
Restricted cash		200		75
Deferred tax assets		3		2
Total other assets	$	203	$	626

Summary of Accrued Liabilities

Accrued liabilities consist of the following:

	September 30, 2015		December 31, 2014
	(in thousands)
Accrued research and development costs	$	1,468	$	526
Accrued employee related costs		1,003		759
Accrued professional fees		415		140
Other		27		48
Total accrued liabilities	$	2,913	$	1,473