Next, we checked the available information obtained by The Cancer Genome Atlas (TCGA) project and found a significant correlation between SOX9 and BMI1 in GBM (Fig. 4D), detecting also that the expression of SOX9 correlated positively with BMI1 expression and negatively with p21CIPexpression in gastric cancer (Fig. 4D). Here, SOX9 is linked to glioblastoma.