New findings out of Ã山ǿ¼é in Montreal have revealed a potential way to overcome aggressive brain tumours' resistance to therapy: by deleting a specific gene. Researchers have long been searching for ways to treat Glioblastomas – the most stubborn type of brain tumour – as they’re well known for their resistance to treatment. A few years back, they were able to confirm the key role a gene called the OSMR gene plays in the process of brain cancer growth.