In addition to breast cancer and PCa, in a comparative analysis of the secretomes of an immortalized pancreatic duct normal epithelial cell (HPDE) and a pancreatic ductal adenocarcinoma cell line (Panc1), PSAP expression in Panc1 was found to 11-fold higher than in the HPDE cell line [39]. The gene discussed is PSAP; the disease is pancreatic ductal adenocarcinoma.