EGFR and glioblastoma: Additional Cox regression analysis revealed that the cumulative risk of death is lower in the m-GBM group with isolated TERTp mutation as compared to the m-GBM group with both a TERTp mutation and/or EGFR amplification and/or +7/−10 alterations (HR = 0.27; CI 95%: 0.09–0.77; see Fig. 1b).