CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 8,675,724	$ 15,302,382
Short-term investments		5,106,627
Prepaid expenses and other current assets	788,598	1,561,705
Total current assets	9,464,322	21,970,714
Property and equipment, net	16,751	417,815
Intangible assets	41,575,516	41,575,516
Other assets		57,345
Total assets	51,056,589	64,021,390
Current liabilities:
Accounts payable	974,475	412,456
Accrued expenses	1,932,568	3,182,415
Derivative liabilities	4,716	64,877
Current portion of contingent consideration	8,993,000
Total current liabilities	11,904,759	3,659,748
Convertible notes payable, net of discount	29,925,203	28,278,875
Derivative liabilities	42,000	55,000
Deferred taxes	16,879,659	16,879,659
Contingent consideration and other liabilities	14,559,641	21,088,834
Total liabilities	73,311,262	69,962,116
Commitments and contingencies
Stockholders' deficit:
Preferred stock, $0.0001 par value; 25,000,000 shares authorized, none issued and outstanding
Common stock, $0.0001 par value; 100,000,000 shares authorized, 24,769,083 shares issued and outstanding at December 31, 2015 and June 30, 2016	2,477	2,477
Additional paid-in capital	171,176,189	169,683,829
Cumulative translation adjustment	(66,197)	(70,790)
Cumulative unrealized loss on investments		(971)
Accumulated deficit	(193,367,142)	(175,555,271)
Total stockholders’ deficit	(22,254,673)	(5,940,726)
Total liabilities and stockholders’ deficit	$ 51,056,589	$ 64,021,390