Competing endogenous RNAs (ceRNAs), which are mRNAs with competitive miRNA binding sites and are modulated by miRNAs, were predicted for four GBM signature genes (PDGFRA, EGFR, NF1, and PTEN) with each of the ceRNA correlated with different GBM subtypes: ceRNAs of PDGFRA and NF1 overlapped with proneural signature genes, EGFR ceRNAs with classical signature genes, and PTEN ceRNAs with mesenchymal signatures [2]. This evidence concerns the gene NF1 and glioblastoma.