title: Glioblastoma
context: Despite maximum treatment, the cancer usually recurs.[3] The most common length of survival following diagnosis is 12 to 15 months, with fewer than 3% to 5% of people surviving longer than five years.[2][3] Without treatment, survival is typically three months.[9] It is the most common cancer that begins within the brain and the second most common brain tumor, after meningioma.[5][10] About 3 per 100,000 people develop the disease a year.[3] It most often begins around 64 years of age and occurs more commonly in males than females.[2][3] Immunotherapy is being studied.[11]
question: What is the survival rate for glioblastoma multiforme?
answers: 12 to 15 months