ESRRB and rectal cancer: ESRRB exhibited high expression levels in GBM, GBMLGG, LGG, UCEC, OV, UCS, ALL, LAML, and CHOL, but was poorly expressed in BRCA, LUAD, ESCA, STES, KIRP, KIPAN, COAD, COADREAD, PRAD, STAD, Head and Neck Cancer (HNSC), KIRC, LUSC, LIHC, WT, SKCM, BLCA, THCA, Rectal Cancer (READ), PAAD, TGCT, and KICH (Figure 1B).