Immunotherapy is the only practical way to go. In particular research DCVax-L (e.g. https://www.thebraintumourcharity.org/brain-tumour-diagnosis-treatment/treat

Immunotherapy is the only practical way to go. In particular research DCVax-L (e.g. https://www.thebraintumourcharity.org/brain-tumour-diagnosis-treatment/treating-brain-tumours/emerging-treatments/immunotherapy/cancer-vaccines/ https://www.thebraintumourcharity.org/brain-tumour-diagnosis...), but also other immunotherapies. There may be nearby clinical trials for such therapies as well: https://clinicaltrials.gov/ https://clinicaltrials.gov/