Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating expenses:
Research and development	$ 12,452,424	$ 8,725,026
General and administrative	9,260,583	5,223,101
Total operating expenses	21,713,007	13,948,127
Loss from operations	(21,713,007)	(13,948,127)
Other income (expense):
Interest income	412,553	14,848
Interest and other expense	(987)	(245,061)
Foreign currency transaction gain/(loss)	20,550	(16,091)
Total other income (expense), net	432,116	(246,304)
Net loss	$ (21,280,891)	$ (14,194,431)
Net loss per share - basic and diluted	$ (2.49)	$ (3.84)
Weighted average common shares outstanding - basic and diluted	8,555,039	3,694,388