Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 45,399	$ 4,778
Prepaid expenses and other current assets	1,160	717
Total current assets	46,559	5,495
Property and equipment, net	67	41
Other assets	145	46
Total assets	46,771	5,582
Current liabilities:
Accounts payable	1,254	1,940
Accrued liabilities	1,535	1,006
Convertible promissory note		5,444
Total current liabilities	2,789	8,390
Warrant liability		885
Obligation to issue common stock		1,457
Other long term liabilities	15	2
Total liabilities	2,804	10,734
Stockholders’ equity (deficit):
Convertible preferred stock		22,567
Common stock	7
Additional paid-in capital	96,180	1,552
Accumulated deficit	(52,220)	(29,271)
Total stockholders’ equity (deficit)	43,967	(5,152)
Total liabilities and stockholders’ equity (deficit)	$ 46,771	$ 5,582