We found that CSNK1A1 shows significantly higher expression in the PDAC epithelium as compared to precursor lesions—premalignant pancreatic intraepithelial neoplasia (PanIN) (Fig. 7A) and intraductal papillary mucinous neoplasia (IPMN). The gene discussed is CSNK1A1; the disease is pancreatic intraductal papillary-mucinous neoplasm.