From:  Targeted therapy for brain tumors: overview and application to precision medicine

 Summary of common molecular alterations in GBM & primary brain tumors.

MutationGBMwtLGGwtAstrocytomaOligoMedullo
IDHm100%100%Rare
EGFR40–50%27%< 10%
EGFRvIII20%
1p/19qdel100%
MGMTm30%70%88%
SMO14%
PDGFR13%
MET4%13%
MET-ex-1414%
FGFR3%
NTRK1–2%4%
ROS10.29%Rare
ALK1.9%Rare
BRAF1.7%RareRare
NF110%20%
PIK3CA13–17%20%
PIK3R18%9%
PTEN41%23%
p5328%14%94%
MDM27.6%13%
CDK4/615%7%
CDKN2A50%45%
RB110%27%
TERT50–74%15–25%> 70%
KIT20%20%25%
ATRX6%86%

Astrocytoma: diffuse astrocytoma IDH mutant; GBMwt: glioblastoma IDH wildtype; LGGwt: low-grade glioma IDH wildtype; Medullo: medulloblastoma; MGMTm: methyl-guanine methyltransferase methylated; Oligo: oligodendroglioma; SMO: smoothened. Data were adapted with permission of the Corresponding Author and Elsevier Book Publishers: Newton HB, Pinho M. Chapter 7 - Next-generation sequencing: overview and application to systemic cancer and brain tumors. In: Newton HB, editor. Handbook of Brain Tumor Chemotherapy, Molecular Therapeutics, and Immunotherapy (Third Edition). Academic Press; 2026. pp. 107–138.