What is Complex 4 mitochondrial respiratory chain deficiency?
• Complex 4 mitochondrial respiratory chain deficiency: A very rare inherited metabolic disorder where the body doesn’t have enough of an enzyme called enzyme cytochrome C oxidase (COX or Complex IV) which is needed in the process of energy production by body cells. There are two subtypes: the benign infantile type only affects muscles whereas the fatal infant type affects the hearty and kidneys as well as the muscles.
