Background of the antigen
Tissue specificity: Liver, skeletal and heart muscle, mammary cells. Very low levels in brain, lung, placenta and kidney. Strongly overexpressed in many pancreas and colorectal cancers. Increased gene copy numbers are detected in 3 of 12 tumor cell lines and 2 of 12 primary pancreatic carcinomas. Overexpresseed in 80% of colorectal cancers.