CBX7 and glioblastoma: We found similar results to the HPA database that CBX7 in the GBM tissues also showed a lower expression than their adjacent normal tissues, whereas CBX8 presented a higher expression in the GBM tissues (Figure 6E), suggesting that CBX7 functioned as an anti-oncogene and CBX8 as an oncogene in the tumorigenesis and progression of GBM.