Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating expenses:
Research and development	$ 1,391,113	$ 1,179,544	$ 3,216,681	$ 2,187,115
General and administrative	1,660,630	1,795,886	3,158,469	3,349,025
Depreciation	26,709	5,790	54,727	12,393
Loss from operations	3,078,452	2,981,220	6,429,877	5,548,533
Other expense (income):
Interest (income) expense, net	(45,339)	18,889	(82,803)	74,608
Change in fair value of warrant liability		(23,387,850)		(10,468,176)
Warrant related expenses				10,225,846
Other financing expenses				2,870,226
(Loss) income before income tax benefit	(3,033,113)	20,387,741	(6,347,074)	(8,251,037)
Income tax benefit	(267,932)		(267,932)
Net (loss) income	(2,765,181)	20,387,741	(6,079,142)	(8,251,037)
Series A cumulative preferred dividends		(487,460)	(85,993)	(546,305)
Deemed dividend related to the make-whole provision for the conversion of Series A convertible preferred stock into common stock			(8,167,895)
Net (loss) income attributable to common stockholders	$ (2,765,181)	$ 19,900,281	$ (14,333,030)	$ (8,797,342)
Per share information:
Net (loss) income per share of common stock, basic (in dollars per share)	$ (0.05)	$ 0.88	$ (0.31)	$ (0.83)
Net (loss) income per share of common stock, diluted (in dollars per share)	$ (0.05)	$ (1)	$ (0.31)	$ (1.56)
Weighted average shares outstanding, basic (in shares)	50,546,021	10,828,063	46,357,478	10,582,521
Weighted average shares outstanding, diluted (in shares)	50,546,021	13,872,632	46,357,478	12,339,386