Together with reports describing high rates ofMUC5AC expression in intraductal papillary mucinous neoplasm (IPMN), a commonprecursor lesion of pancreatic adenocarcinoma, these findings are all consistentwith a role of MUC5AC neo-expression during pancreatic cancer development.20,29, –31. Here, MUC5AC is linked to pancreatic neoplasm.