CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating expenses:
Research and development	$ 8,085,522	$ 10,321,397
General and administrative	6,077,097	5,819,111
Total operating expenses	14,162,619	16,140,508
Loss from operations	(14,162,619)	(16,140,508)
Other income (expense)
Change in fair value of derivative liabilities	(3,187,380)	1,664,689
Loss on debt conversion	(341,136)	0
Interest income	1,214	19,213
Interest expense	(1,767,836)	(3,750,630)
Other income (expense)	(784,873)	(12,428)
Total other income (expense)	(6,080,011)	(2,079,156)
Net loss	(20,242,630)	(18,219,664)
Other comprehensive income (loss)
Foreign currency translation adjustment	(451)	451
Comprehensive loss	$ (20,243,081)	$ (18,219,213)
Net loss per share of common stock - basic and diluted (in USD per share)	$ (1.46)	$ (3.67)
Weighted average shares of common stock outstanding - basic and diluted (in shares)	13,893,819	4,960,552