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Unaudited Statements of Operations and Comprehensive Loss - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Unaudited Statements of Operations and Comprehensive Loss
Revenue			$ 9,000,000
Costs and expenses:
Research and development expense	9,870,813	13,065,359	22,539,073	24,838,025
General and administrative expense	4,234,917	3,750,610	8,674,677	7,111,058
Total costs and expenses	14,105,730	16,815,969	31,213,750	31,949,083
Loss from operations	(14,105,730)	(16,815,969)	(22,213,750)	(31,949,083)
Interest income	26,701	986,154	472,117	2,035,371
Net loss and comprehensive loss	$ (14,079,029)	$ (15,829,815)	$ (21,741,633)	$ (29,913,712)
Basic and diluted net loss per common share (in dollars per share)	$ (0.32)	$ (0.37)	$ (0.50)	$ (0.69)
Basic and diluted weighted-average number of common shares (in shares)	43,801,251	43,183,010	43,688,420	43,174,989

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