Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash	$ 200	$ 629
Prepaid expenses and deposits	140	170
Total current assets	340	799
Right of use operating assets	51
Total assets	391	799
Current liabilities:
Accounts payable	901	915
Accrued consulting and professional service expenses	99	126
Facility lease obligations	55
Accrued compensation and employee benefits	49	24
Accrued clinical trial expenses	27	27
Other accrued liabilities	43	69
Total current liabilities	1,174	1,161
Commitments and contingencies
Stockholders' deficit:
Preferred stock, $0.01 par value, 15,000 shares authorized; No shares issued and outstanding
Common stock, $0.01 par value, 150,000 shares authorized; 41,420 shares issued and outstanding	414	414
Additional paid-in capital	294,448	294,236
Accumulated deficit	(295,645)	(295,012)
Total stockholders' deficit	(783)	(362)
Total liabilities and stockholders' deficit	$ 391	$ 799