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Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statements of Operations [Abstract]
Revenue
Operating expenses:
Research and development, net of reimbursements	4,379,047	4,147,945	8,883,398	7,913,397
General and administrative	2,809,918	2,750,448	6,090,235	4,968,915
Depreciation expense	14,335	19,472	35,255	37,592
Total operating expenses	7,203,300	6,917,865	15,008,888	12,919,904
Loss from operations	(7,203,300)	(6,917,865)	(15,008,888)	(12,919,904)
Other income (expense):
Interest expense		(1,683)		(4,341)
Gain (loss) on change in fair value of derivative liabilities	149,592	295,462	(106,403)	1,896,861
Total other income (expense)	149,592	293,779	(106,403)	1,892,520
Net loss	$ (7,053,708)	$ (6,624,086)	$ (15,115,291)	$ (11,027,384)
Net loss per common share - basic and diluted	$ (0.12)	$ (0.14)	$ (0.26)	$ (0.24)
Weighted average common shares outstanding - basic and diluted	58,184,534	46,470,225	57,045,036	45,362,009

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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