EGFR and glioblastoma: The mOS of both histologic grade 2 and 3 IDH-wildtype diffuse astrocytic gliomas and molecular GBM was significantly stratified by EGFR Amp (18.5 months vs. 83.8 months, HR = 3.30, p < 0.01, 16.1 months vs. NA, p = 0.044).