Further differential expression analyses of RCORs expression between tumor tissues and adjacent non-tumor tissues were also performed, we found that RCOR1 and RCOR2 are significantly higher in tumor than in adjacent non-tumor tissues in BRCA, CHOL, COAD, ESCA, KIRP, LIHC, LUAD, PRAD, STAD, THCA, and UCEC (p < 0.05, Figures 1D, E) and RCOR3 was highly expressed in most cancer tissues except KICH (Figure 1F). Here, RCOR2 is linked to cancer.