We found that TP53 has the highest mutation rate in six cancer types: UCS, OV, ESCA, LUSC, HNSC and sarcoma (SARC), and the second-highest mutation rate in seven other cancer types: READ, LUAD, LGG, bladder urothelial carcinoma (BLCA), stomach adeno-carcinoma (STAD), liver hepato-cellular carcinoma (LIHC), and breast-invasive carcinoma (BRCA). This evidence concerns the gene TP53 and bladder transitional cell carcinoma.