Asialoglycoprotein Receptor 2 is a transmembrane protein that plays a critical role in serum glycoprotein homeostasis by mediating the endocytosis and lysosomal degradation of plasma glycoproteins in which the terminal sialic acid residue on their complex carbohydrate moieties has been removed. It is expressed exclusively in hepatic parenchymal cells and calcium is required for ligand binding. Asialoglycoprotein Receptor 2 may facilitate hepatic infection by multiple viruses including hepatitis B, and is also a target for liver-specific drug delivery. Asialoglycoprotein Receptor 2 is involved in hepatitis B, hepatitis C, liver cirrhosis, hepatocellular carcinoma, nephropathy, leukemia, urethritis, autoimmune hepatitis, alcoholic liver cirrhosis, and jaundice.