CCDC137 and bladder transitional cell carcinoma: Based on our results, we found that CCDC137, compared to normal tissues, was over-expressed in 16 tumor types including BLCA, BRCA, CESC, CHOL, COAD, ESCA, GBM, HNSC, KIRC, KIRP, LIHC, LUAD, LUSC, READ, STAD, and UECE.