Selected results of the statistical analyses.

Cox’s Proprtional Hazard values pertain to the univariate analysis for age and to the multivariate analysis (adjusted for age) for other analyses. HR values refer to the presence of given feature. For example: In the group of patients younger than 60 years old, the risk of death over given time is 3.745 times higher in those with EGFR amplification than in those without the amplification. Abbreviations: TP53– TP53 mutation; EGFR – EGFR amplification; Poly 7– chromosome 7 polysomy; EGFRvIII – EGFRvIII expression; CDKN2A – CDKN2A deletion; y. o. – years old.