A total of 11 different antibodies were performed on 12 cases of urachal adenocarcinomas from the University Hospital of Essen including β-Catenin, CD15, CDX2, CEA, CK7, CK20, GATA3, MLH1, MSH2, MSH6, and PMS2 (Supplementary Table 1). This evidence concerns the gene KRT20 and bladder urachal adenocarcinoma.