Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Summary of Significant Accounting Policies

Schedule of antidilutive securities excluded from computations of diluted net loss per common share

	As of March 31,
	2015	2014
Warrants to purchase common stock	88,545	88,545
Options to purchase common stock	4,020,821	2,548,314
	4,109,366	2,636,859