“…ATP7B is a copper-transporting ATPase that mediates copper excretion into bile (1,4), and its functional loss causes a major impairment of the ability of hepatocytes to maintain copper homeostasis at the cellular and systemic levels, resulting in persistent copper accumulation in the liver. This can lead, most likely as a result of spillover of liver copper, to deleterious effects on the brain and, in many cases, to chronic liver disease and also to fulminant hepatic failure (1,(5)(6)(7)(8).…”