When considering all glioblastoma samples, strong negative correlations were found between MGMT promoter CpGs 72–83 and all CpGs in enhancer F, as well as nearly all investigated CpGs in enhancers G and H. In addition, methylation of all twelve MGMT promoter CpGs correlated with methylation of CpGs 06 and 07 in enhancer I, although this was not or not to the same extent observed for CpGs 08–11. This evidence concerns the gene MGMT and glioblastoma.