Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 52,339	$ 62,431
Prepaid expenses and other current assets	1,164	802
Total current assets	53,503	63,233
Property and equipment, net	371	400
Restricted cash	334	334
Other assets	1,618	1,441
Total assets	55,826	65,408
Current liabilities:
Accounts payable	3,769	3,089
Accrued expenses and other liabilities	4,985	4,263
Capital lease obligations	24	23
Deferred rent	54	48
Term loan	1,109
Total current liabilities	9,941	7,423
Capital lease obligations	11	17
Deferred rent	166	184
Term loan	13,970	15,013
Total liabilities	$ 24,088	$ 22,637
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, par value of $0.001 per share; 1,000,000 shares authorized and no shares issued and outstanding as of March 31, 2016 and December 31, 2015
Common stock, par value of $0.001 per share; 500,000,000 shares authorized and 18,815,689 shares issued and outstanding as of March 31, 2016 and December 31, 2015	$ 19	$ 19
Additional paid-in capital	207,317	206,129
Accumulated deficit	(175,598)	(163,377)
Total stockholders’ equity	31,738	42,771
Total liabilities and stockholders’ equity	$ 55,826	$ 65,408