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Congenital disorder of glycosylation

Synonym(s) CDG
Carbohydrate deficient glycoprotein syndrome
Prevalence Unknown
Inheritance Autosomal recessive
or X-linked recessive
Age of onset Infancy
  • E77.8
  • C0282577
MeSH -
MedDRA -


Disease definition

Congenital disorder of glycosylation (CDG) is a fast growing group of inborn errors of metabolism characterized by defective activity of enzymes that participate in glycosylation (modification of proteins and other macromolecules by adding and processing of oligosaccharide side chains). CDG is comprised of phenotypically diverse disorders affecting multiple systems including the central nervous system, muscle function, immunity, endocrine system, and coagulation. The numerous entities in this group are subdivided, based on the synthetic pathway affected, into disorder of protein N-glycosylation, disorder of protein O-glycosylation, disorder of multiple glycosylation, and disorder of glycosphingolipid and glycosylphosphatidylinositol anchor glycosylation (see these terms).

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