Last year my husband who is only 30 was diagnosed with gbm4. Chemo and radiotherapy hasnt worked and theres nothing else they can offer him in the way of stopping the thing growing. Without sounding too morbid I worry about his deteriation. Id hope it would be quick and painless. Can anyone shed any light on what will happen further down the line or does it depend on the indvidual? His tumour is in the frontal lobe of his brain.