CTNND1 and familial pancreatic carcinoma: Gold, D.V., et al. have developed a murine monoclonal antibody, PAM4-based immunoassay to measure serum CA15-3 (mucin1) levels, and found that patients’ serum CA15-3 levels could be used to differentiate pancreatic cancer from pancreatitis [8]; Liu, X., et al. have examined the function of CA15-3 in pancreatic cancer cell lines, and suggested that CA15-3 may be involved in promoting pancreatic cancer cells proliferation by the interaction with p120 catenin [9].