By genotyping MGMT SNP rs16906252, 32 (91.4%) GBM samples were found to be homozygous C (wildtype), two (5.7%) samples (GBM20 and GBM27) were homozygous T, and for one (2.9%) sample (GBM06), an (atypical) heterozygous genotype was determined. The gene discussed is MGMT; the disease is glioblastoma.