Blood DNA samples were available for 128 GBM patients that were genotyped for four TERT SNPs; rs2853669 (T > C) located in the promoter region, rs2736100 (A > C), rs10069690 (C > T) and rs4246742 (T > A) located in introns 2, 4 and 8 respectively. This evidence concerns the gene TERT and glioblastoma.