WHO has removed IDHmt aka IDH mutant from the GBM classification.
WHO is keeping IDH wild-type within the definition of GBM. All GBM is now comprised of 100% wild-type.
This is very good for NWBO. Confusion is not.
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Quote: Glioblastoma is now defined as a diffuse astrocytic glioma with no mutations in IDH genes nor histone H3 genes and is characterized by microvascular proliferation, necrosis and/or specific molecular features, including TERT promoter mutation, EGFR gene amplification and/or a +7/–10 cytogenetic signature. — https://www.nature.com/articles/s41571-020-00447-z December 8, 2020