PTBP1 and bladder transitional cell carcinoma: The analysis showed that PTBP1 expression is significantly higher in BLCA, BRCA, CESC, CHOL, COAD, ESCA, GBM, HNSC, KIRC, LGG, LIHC, LUSC, PAAD, SKCM, STAD, TGCT, UCEC in tumor tissues (P < 0.001, Fig. 1A), but significantly lower in LAML, LUAD, and THCA.