| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EXPENSES | ||||||||||||||||
| Research and development | — | |||||||||||||||
| Research and development - related parties [note 8] | — | — | — | |||||||||||||
| General and administrative | — | |||||||||||||||
| General and administrative - related parties [note 8] | — | — | — | |||||||||||||
| Total operating expenses | — | |||||||||||||||
| OTHER INCOME | ||||||||||||||||
| Interest income | — | |||||||||||||||
| Interest expense [note 6] | — | |||||||||||||||
| Change in fair value of contingent consideration [note 4 and note 5] | — | |||||||||||||||
| Loss on extinguishment of 2023 SVB convertible term loan [note 6] | — | — | — | — | ||||||||||||
| Other (expenses) income | — | |||||||||||||||
| Warrant issuance cost [note 7b] | — | — | — | |||||||||||||
| Change in fair value of warrant liability [note 5] | — | — | — | |||||||||||||
| Change in fair value of pre-funded warrant liability [note 5] | — | — | — | |||||||||||||
| Total other income | — | |||||||||||||||
| Net loss | ||||||||||||||||
| Basic net loss per common share [note 7[d]] | — | |||||||||||||||
| Diluted net loss per common share [note 7[d]] | — |