STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating expenses:
Research and development	$ 13,715,968	$ 7,559,077
General and administrative	10,566,813	10,664,991
Warrant inducement expense	1,265,780	0
Total operating expenses	25,548,561	18,224,068
Loss from operations	(25,548,561)	(18,224,068)
Other income (expense):
Interest income	185,267	163,832
Interest expense	(1,825,148)	(6,152,043)
Loss on extinguishment of convertible note payable	(1,049,166)	0
Change in fair value of derivative liability and extinguishment of derivative liability	1,243,000	50,000
Change in fair value of warrant liabilities	(54,200)	0
Total other income (expense), net	(1,500,247)	(5,938,211)
Loss before income taxes	(27,048,808)	(24,162,279)
Benefit from income taxes	0	0
Net loss	$ (27,048,808)	$ (24,162,279)
Net loss per common share, basic and diluted (in dollars per share)	$ (0.81)	$ (0.98)
Weighted-average common shares, basic and diluted (in shares)	33,328,591	24,762,151