CDG syndrome is the abbreviation for Carbohydrate-Deficient Glycoprotein syndrome. CDG is a rare inherited metabolic condition which affects human development. It often causes extremely serious, and possibly fatal, medical problems to infants. There are several variants classified as Type 1a, 1b, 1c, 1d, 1e and IIa. They are all caused by abnormal synthesis of the sugar groups which form parts of glycoproteins which, in turn, leads to disorders of the nerves, liver and intestines. The specific effects differ according to the particular abnormal synthesis involved.
