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RELATED PARTY TRANSACTIONS - Disclosure of expenses related to key management personnel (Details) - CAD ($)
4 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2021
Sep. 30, 2020
Disclosure of transactions between related parties [abstract]      
Professional fees $ 0 $ 87,074 $ 22,575
Research and development 0 772,596 26,777
Share-based compensation included in directors' compensation 0 136,612 0
Share-based compensation included in professional fees 0 23,126 0
Share-based compensation included in research and development 0 236,652 161,300
Total expenses related to key management personnel $ 0 $ 1,256,060 $ 210,652