As detailed in Table 2, CK7, MUC1 and MUC4 reactivity was more often positive in pancreatobiliary-type adenocarcinomas, whereas MUC2, CK20 and CDX2 reactivity was more often positive in intestinal-type adenocarcinomas (P < 0.05 for each marker). This evidence concerns the gene MUC1 and adenocarcinoma.