Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 4,538,680	$ 1,477,143
Grants receivable	133,318	84,344
Prepaid expenses	411,994	$ 334,629
Deferred financing costs	586,608
Other current assets	11,016	$ 14,675
Total current assets	5,681,616	1,910,791
Property and equipment, net	109,920	57,053
Goodwill	6,826,003	6,826,003
Other long-term assets	126,655	11,017
Total assets	12,744,194	8,804,864
Current liabilities:
Accounts payable	2,331,613	1,313,247
Accrued compensation	489,114	230,381
Accrued clinical operations and site costs	373,197	494,110
Accrued lease contingency fee	590,504	590,504
Other accrued expenses	$ 1,199,278	245,421
Warrant liability		92,463
Total current liabilities	$ 4,983,706	2,966,126
Redeemable convertible preferred stock:
Redeemable convertible preferred stock, value		1,838,025
Redeemable convertible preferred stock, total		1,838,025
Stockholders' equity:
Common stock, $0.01 par value; 150,000,000 shares authorized as of September 30, 2015, 25,225,472 and 2,802,867 shares issued and outstanding as of September 30, 2015, and December 31, 2014, respectively	$ 258,911	28,029
Additional paid-in capital	64,118,899	24,492,450
Accumulated deficit	(56,619,570)	(24,550,308)
Total stockholders' equity	7,760,488	4,000,713
Total liabilities, redeemable convertible preferred stock and stockholders' equity	$ 12,744,194	8,804,864
Series A-1 Convertible Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock		4,029,576
Series C Convertible Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock		$ 966
Series D Convertible Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock	$ 1,915
Series E Preferred Stock [Member]
Stockholders' equity:
Convertible preferred stock	$ 333