Statements of Operations - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Operating expenses
Research and development	$ 1,564,178	$ 2,044,476
General and administrative	1,111,689	1,530,357
Total operating expenses	2,675,867	3,574,833
Other income (expense)
Interest income	23,765	0
Derivative (loss) gain (Note 4)	(3,159,532)	25,614,305
Total other (expense) income	(3,135,767)	25,614,305
Net (loss) income	$ (5,811,634)	$ 22,039,472
Basic and diluted net (loss) income per common share	$ (0.05)	$ 0.27
Weighted average number of common shares outstanding	111,104,292	82,943,340

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