The main markers supporting the diagnosis of MPM include calretinin, CK5/6, WT‐1, mesothelin, and D2‐40, while the main markers supporting the diagnosis of lung adenocarcinoma include TTF‐1, napsin A, carcinoembryonic antigen (CEA), BerEP4, and claudin4.33, 34. This evidence concerns the gene KRT5 and lung adenocarcinoma.