As shown in Fig. 3, 8 genes showed significant deregulation in GBM II-IV grade groups, such as BIRC3, IRF2BPL and RNF135 showed consistent higher expression, and decreased expression was observed of genes KBTBD3, RNF185, RNF39, ZBTB5 and ZBTB6. This evidence concerns the gene ZBTB6 and glioblastoma.