TP63 and urothelial carcinoma: Earlier studies analysing pT2‐4 urothelial carcinomas have found p63 positivity in 32% of 98,17 33% of 100,21 77% of 158,14 and 80% of 50,20 81% of 1.086,7 100% of 62,22 and 100% of 2133 cancers.