Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 3,535	$ 27,285
Short-term investments	8,512
Prepaid clinical trial expenses	1,946	38
Other prepaid expenses and current assets	77	67
Total current assets	14,070	27,390
Property and equipment, net	11	30
Other assets	33	33
Total assets	14,114	27,453
Current liabilities:
Accounts payable	310	287
Accrued compensation and employee benefits	842	636
Accrued clinical trial expenses	64	918
Other accrued liabilities	398	262
Total current liabilities	1,614	2,103
Commitments and contingencies (see Note 9)
Stockholders' equity:
Preferred stock, $0.01 par value, 15,000 shares authorized; No shares issued and outstanding
Common stock, $0.01 par value, 70,000 shares authorized; 26,545 shares issued and outstanding	265	265
Additional paid-in capital	290,698	289,894
Accumulated deficit	(278,463)	(264,809)
Total stockholders' equity	12,500	25,350
Total liabilities and stockholders' equity	$ 14,114	$ 27,453