TP53 and urinary bladder cancer: KEGG pathway analysis for the differentially expressed mRNAs revealed 20 pathways that could play pivotal roles in tumorigenesis mechanisms of BC including p53, bladder cancer, cell cycle, chemical carcinogenesis and Cytokine-cytokine receptor interaction in BC group compared with the normal control, suggesting that dyregulated mRNAs may play crucial role for these targets through regulating associated pathways in BC.