MTAP protein status is highly concordant with CDKN2A fluorescent in situ hybridization and allows stratification of the luminal subtype in muscle‐invasive bladder cancer. - Olkhov‐Mitsel, Ekaterina; Oberc, Alexander; Craddock, Kenneth J; Sherman, Christopher; Slodkowska, Elzbieta; Downes, Michelle R (Histopathology, 2025)