This was done to a friend-of-a-friend of mine. When he was diagnosed he was given 90 days. He lived 2 years so it was a win in my opinion. I believe he thought so too.
Unfortunately, that doesn't really mean anything. Glioblastomas, like many types of cancer, come in several different forms often depending on the specific mutations that led to the cancer. The different forms have greatly different behavior, and cause death on different time scales (e.g. there are 60-day forms and 5-year forms, and we can't yet distinguish them in a clinical setting without watching them progress). Some of this uncertainty will soon be eliminated by the widespread genetic sequencing of tumors.
