Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating expenses:
Research and development	$ 2,015,076	$ 2,419,961
General and administrative	1,137,753	1,025,261
Total operating expenses	3,152,829	3,445,222
Loss from operations	(3,152,829)	(3,445,222)
Other expense	(72,580)	(75,526)
Net loss	$ (3,225,409)	$ (3,520,748)
Net loss per common share, basic and diluted	$ (0.45)	$ (0.58)
Weighted-average shares used to compute basic and diluted net loss per share	7,168,005	6,103,783