It remains to be investigated whether these miRNAs truly repress EZH2, and whether other previously identified miR-101 target genes are also repressed by miR-101 in GBM cells, these may include Cox-2, Mcl-1 and Fos [37], MAGI-2 [40], DNA-PKcs and ATM [41], COX-2 [42]. This evidence concerns the gene ATM and glioblastoma.