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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Technology development and licensing revenue	$ 125,000	$ 125,000
Operating expenses:
Research and development	2,767,659	2,741,076
General and administrative	2,217,864	1,665,028
Total operating expenses	4,985,523	4,406,104
Loss from operations	(4,860,523)	(4,281,104)
Other income (expense):
Gain (loss) from change in valuation of earn-out milestone liability	3,130,000	(270,195)
Fair value of warrants issued in connection with amendment to modify GEN-1 earn-out milestone payments	(400,000)
Investment income	113,791	73,724
Interest expense	(350,747)
Other income	27	580
Total other income (expense), net	2,493,071	(195,891)
Net loss	$ (2,367,452)	$ (4,476,995)
Net loss per common share
Basic and diluted	$ (0.12)	$ (0.25)
Weighted average shares outstanding
Basic and diluted	19,104,785	17,683,847

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