Placental-Cadherin (CDH3), a cell adhesion molecule, is associated with the function of cells to bind with other cells and the extracellular matrix (ECM). CDH3 is highly expressed in many malignancies, and has been proved it could be a serum marker to monitor colorectal cancer.CDH3 is a glycoprotein with a single-span transmembrane domain that mediates cell-to-cell adhesion. Abnormal expression of CDH3 is associated with a poor prognosis in patients with breast, thyroid, colorectal carcinomas and glioblastoma.