CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Total revenues	$ 466,785	$ 0	$ 466,785	$ 0
Operating expenses:
Research and development	4,277,052	3,152,445	8,093,670	5,985,140
General and administrative	2,547,289	2,721,120	5,374,284	5,526,895
Total operating expenses	6,824,341	5,873,565	13,467,954	11,512,035
Loss from operations	(6,357,556)	(5,873,565)	(13,001,169)	(11,512,035)
Other income (expense):
Change in fair value of warrant liabilities	0	(7,000)	31,000	(16,000)
Interest income	15,857	310,174	142,826	638,719
Net loss	$ (6,341,699)	$ (5,570,391)	$ (12,827,343)	$ (10,889,316)
Net loss per share, basic and diluted	$ (0.14)	$ (0.12)	$ (0.28)	$ (0.24)
Weighted average number of common shares outstanding	46,572,739	45,501,078	46,328,561	45,483,513

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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