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CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)
 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
OPERATING EXPENSES    
Research and development $ 21,322,530 $ 24,415,246
Financing costs (Note 7) 6,942 13,746
General and administration 10,811,574 12,544,760
Total operating expenses (32,141,046) (36,973,752)
Foreign exchange 6,529 1,687
Interest and other income 5,553,774 1,736,641
Derivative liability gain (Note 8) 0 20,352
Loss for the year before taxes (26,580,743) (35,215,072)
Income tax recovery (expense) (Note 11) (1,600) 111,821
Net loss for the year (26,582,343) (35,103,251)
OTHER COMPREHENSIVE LOSS    
Unrealized gain (loss) on short-term investments (Note 4) 14,747 (58,666)
Loss and comprehensive loss for the year $ (26,567,596) $ (35,161,917)
Earnings Per Share    
Basic loss per common share (in dollars per share) $ (0.60) $ (0.80)
Diluted loss per common share (in dollars per share) $ (0.60) $ (0.80)
Weighted average number of common shares outstanding - Basic (in shares) 44,089,557 44,038,241
Weighted average number of common shares outstanding -Diluted (in shares) 44,089,557 44,038,241