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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Revenues: |  |  |  |
Total revenues | $ 0 | $ 0 | $ 466,785 | $ 0
Operating expenses: |  |  |  |
Research and development | 4,803,605 | 3,118,530 | 12,897,275 | 9,103,670
General and administrative | 2,572,562 | 2,536,204 | 7,946,846 | 8,063,099
Total operating expenses | 7,376,167 | 5,654,734 | 20,844,121 | 17,166,769
Loss from operations | (7,376,167) | (5,654,734) | (20,377,336) | (17,166,769)
Other income (expense): |  |  |  |
Change in fair value of warrant liabilities | 0 | (64,000) | 31,000 | (80,000)
Interest income | 4,667 | 259,248 | 147,493 | 897,967
Net loss | $ (7,371,500) | $ (5,459,486) | $ (20,198,843) | $ (16,348,802)
Net loss per share, basic and diluted | $ (0.16) | $ (0.12) | $ (0.43) | $ (0.36)
Weighted average number of common shares outstanding | 46,867,119 | 45,655,387 | 46,509,391 | 45,541,434
Grant income |  |  |  |
Revenues: |  |  |  |
Total revenues | $ 0 | $ 0 | $ 466,785 | $ 0

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