Moreover, IHC staining of a renal cancer tissue microarray with anti-CBX7 and anti-RNF26 antibodies demonstrated that CBX7 expression was negatively correlated with RNF26 expression in the patient specimens (Spearman correlation r = -0.349, P = 0.0318) (Fig. 5I, J). This evidence concerns the gene CBX7 and renal carcinoma.