CONDENSED STATEMENTS OF OPERATIONS (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue:
License revenue	$ 0	$ 200,000	$ 0	$ 200,000
Expenses:
Research and development	10,427,877	4,626,244	17,415,725	7,815,003
General and administrative	2,909,127	1,970,930	6,040,201	3,788,255
Total Expenses	13,337,004	6,597,174	23,455,926	11,603,258
Loss before other income (loss)	(13,337,004)	(6,397,174)	(23,455,926)	(11,403,258)
Other income (loss):
Interest income	89,377	35,564	160,015	75,822
Other income (loss), net	(3,243)	4,761	6,655	201,698
Gain (loss) on warrant derivative liability	(2,468,603)	2,933,707	12,234,301	838,487
Net loss	$ (15,719,473)	$ (3,423,142)	$ (11,054,955)	$ (10,287,251)
Basic and diluted net loss per share (in dollars per share)	$ (0.28)	$ (0.11)	$ (0.21)	$ (0.34)
Basic and diluted weighted average shares outstanding (in shares)	55,676,766	30,418,435	53,010,556	30,417,906