Condensed Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenue			$ 3,998,133
Operating expenses:
Research and development (in the three and six months ended June 30, 2021, net of collaboration funding of $926,247 and $1,212,350, respectively)	$ 1,460,975	$ 2,816,749	3,466,880	$ 5,139,653
General and administrative (in each of the three and six months ended June 30, 2021, net of collaboration funding of $543,987)	2,327,055	2,953,137	5,841,196	5,601,688
Total operating expenses	3,788,030	5,769,886	9,308,076	10,741,341
Loss from operations	(3,788,030)	(5,769,886)	(5,309,943)	(10,741,341)
Other income (expense), net:
Interest and other income (expense), net	564,914	(2,317)	524,751	21,801
Foreign currency transaction (loss) gain	(4,156)	1,402	44,748	33
Total other income (expense), net	560,758	(915)	569,499	21,834
Net loss	$ (3,227,272)	$ (5,770,801)	$ (4,740,444)	$ (10,719,507)
Net loss per share - basic and diluted	$ (0.23)	$ (0.56)	$ (0.33)	$ (1.05)
Weighted average common shares outstanding - basic and diluted	14,310,244	10,365,767	14,225,551	10,231,437