PTBP1 and bladder transitional cell carcinoma: PTBP1 was upregulated in tumor tissues compared with normal tissues in BLCA, BRCA, CESC, CHOL, COAD, ESCA, GBM, HNSC, KIRC, KIRP, LIHC, LUAD, LUSC, PRAD, READ, STAD, and UCEC.