Examination of the merged Cell 2016 LGG and GBM dataset using cBioportal indicated that 40% tumors (319/794) displayed mutations of the p53 gene, with the R273H locus being by far the most common p53 mutation—accounting for 22% (69/319) of all p53 mutations (Supplementary Figure S6A). The gene discussed is TP53; the disease is glioblastoma.