The normalized averaged ΔCT values of all investigated markers comparing center and edge GBM samples were: 1.89/2.22 (MCT1), 3.89/3.88 (MCT4), −3.67/−3.33 (vimentin), −4.49/−5.11 (GFAP), 2.94/2.33 (β-catenin), 6.05/4.94 (KLF4), 5.45/4.83 (OCT4), 1.73/1.51 (Sox2), 5.09/4.29 (EPHA5), 3.83/3.79 (H2BK), −0.33/−0.61 (IGFBP5) (see Supplementary Material, Table S2 for all ΔCt values and n-fold changes). The gene discussed is KLF4; the disease is glioblastoma.