CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
COSTS AND EXPENSES:
Research and development	$ 5,158,874	$ 5,964,453
General and administrative	3,395,360	3,704,676
Restructuring costs	203,631	221,816
Total costs and expenses	8,757,865	9,890,945
LOSS FROM OPERATIONS	(8,757,865)	(9,890,945)
OTHER INCOME (EXPENSE):
Gain on revaluation of derivative warrants	3,667,826	2,285,157
Loss on issuance of derivative warrants	(404,150)	0
Interest expense, net	(841)	(446,314)
Total other income, net	3,262,835	1,838,843
NET LOSS	$ (5,495,030)	$ (8,052,102)
BASIC AND DILUTED NET LOSS PER COMMON SHARE	$ (7.03)	$ (17.53)
SHARES USED IN COMPUTING BASIC AND DILUTED NET LOSS PER COMMON SHARE	781,975	459,266