High-level expression of RPS6 is strongly correlated with GBM stem cell (GSC) markers, Nestin and SRY-box transcription factor 2 (SOX2), and an oligodendrocyte progenitor cell marker, oligodendrocyte transcription factor 2 (OLIGO2), in GBM tissues [438]. This evidence concerns the gene OLIG2 and glioblastoma.