Our mRNA expression analysis revealed high variability in CDCP1 mRNA levels in normal bladder, breast, cervix, colon, esophagus, kidney and stomach, and our immunohistochemical results indicated CDCP1 protein at intermediate levels on the epithelium of normal cervix, colon, esophagus, small intestine and uterus, suggesting these normal organs as sites for potential off-tumor effects. Here, CDCP1 is linked to neoplasm.