MKI67 and glioblastoma: Among glioblastoma samples with unmethylated MGMT promoter, significantly higher methylation levels were found in samples with high Ki-67 index at CpG 27 in enhancer B (p = 0.023), and CpG 13, 26, and 27 (p ≤ 0.029) in enhancer E (Figure 7E).