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Consolidated Statements of Operations and Comprehensive Loss - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Operating expenses        
General and administrative $ 1,307,379 $ 1,157,174 $ 2,584,559 $ 2,460,363
Research and development expenses 2,512,572 2,217,622 4,205,963 3,304,275
License expenses 162,500 250,000 275,000 350,000
Impairment of goodwill 0 0 0 5,187,519
Total operating expenses 3,982,451 3,624,796 7,065,522 11,302,157
Loss from operations (3,982,451) (3,624,796) (7,065,522) (11,302,157)
Other income 30,001 42,626 61,232 54,370
Net loss (3,952,450) (3,582,170) (7,004,290) (11,247,787)
Deemed dividend from trigger of down round provision feature (789,594) 0 (789,594) 0
Net loss to common shareholders (4,742,044) (3,582,170) (7,793,884) (11,247,787)
Foreign currency translation adjustments (7,917) (27,485) (296) (41,231)
Comprehensive loss $ (4,749,961) $ (3,609,655) $ (7,794,180) $ (11,289,018)
Loss per common share - basic and diluted (in usd per share) $ (0.29) $ (0.32) $ (0.57) $ (1.13)
Weighted average number of common shares outstanding:        
Basic and diluted (in shares) 16,105,252 11,422,161 13,776,643 10,031,249