Consolidated Balance Sheets - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 7,144,000	$ 9,370,000
Accounts receivable	18,000	125,000
Prepaid expenses and other current assets	576,000	521,000
Total current assets	7,738,000	10,016,000
Property and equipment, net	1,210,000	1,131,000
In process research and development	12,446,000	12,446,000
Acquired patents, net	323,000	338,000
Goodwill	7,562,000	7,562,000
Total assets	29,279,000	31,493,000
Current liabilities
Accounts payable, accrued expenses and other	2,239,000	1,464,000
Deferred revenue	43,000	245,000
Accrued severance	72,000	308,000
Dividends payable	970,000	368,000
Total current liabilities	3,324,000	2,385,000
Derivative liabilities	1,466,000	1,499,000
Deferred tax liability	3,005,000	3,005,000
Total liabilities	7,795,000	6,889,000
Series B redeemable convertible preferred stock
$0.01 par value, 9,357,935 shares authorized at June 30, 2016 and December 31, 2015, no shares and 7,527,853 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively (liquidation preference of $0 and $13,383,000 at June 30, 2016 and December 31, 2015, respectively)		11,890,000
Stockholders' equity
Common stock, $0.01 par value, 670,000,000 shares authorized at June 30, 2016 and December 31, 2015, 11,120,394 and 5,883,503 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively	111,000	59,000
Additional paid-in capital	390,858,000	375,177,000
Accumulated deficit	(369,485,000)	(362,522,000)
Total stockholders' equity (deficit)	21,484,000	12,714,000
Total liabilities, Series B redeemable convertible preferred stock and stockholders' equity	$ 29,279,000	$ 31,493,000