TAG-72; CA72-4; Tumor-associated glycoprotein 72

TAG-72, also known as CA72-4, is a tumor-associated glycoprotein that is often overexpressed on the surface of many cancer cells, particularly in adenocarcinomas. It's a mucin-like molecule with a high molecular weight and is frequently used as a tumor marker, especially for ovarian, breast, and pancreatic cancers.