Consolidated Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Option Revenue	$ 726,292	$ 307,686	$ 1,103,745	$ 656,523
Research and development	2,795,858	3,409,210	5,432,857	6,220,349
General and administrative	1,345,624	967,367	2,351,754	2,070,247
Depreciation and amortization	94,002	98,658	190,984	194,244
Operating loss	(3,509,192)	(4,167,549)	(6,871,850)	(7,828,317)
Interest income, net	2,337	4,290	3,068	9,484
Other income, net	9,974	0	21,021	0
Net loss	$ (3,496,881)	$ (4,163,259)	$ (6,847,761)	$ (7,818,833)
Basic and diluted loss per share	$ (0.07)	$ (0.15)	$ (0.18)	$ (0.28)
Weighted average shares outstanding - Basic and diluted	49,769,294	27,661,675	39,061,510	27,623,358