Flipper, as I was searching for the holy grail, I found references to other categories other than the 4 subtypes. For example, what is this distinction between NFP positive and negative?
"Median overall survival and progression-free survival (PFS) were 13.0 and 7.6 months, respectively, for NFP-positive GBMs, and 7.0 and 5.1 months, respectively, for NFP-negative GBMs."