Consistently, in the TCGA tumor data and paired non-tumor data, we found that the NKD2 mRNA levels were also robustly expressed in the tumor tissues from BLCA, BRCA, CHOL, COAD, ESCA, GBM, HNSC, KIRP, LIHC, LUAD, LUSC, PCPG, PRAD, READ, STAD, THCA, UCEC compared with the paired tumor-free tissues (Fig. 1B). This evidence concerns the gene NKD2 and bladder transitional cell carcinoma.