5C54.1

ICD-11 MMS 2026-01

Disorders of protein O-glycosylation

Description

Congenital disorders involving defective O-linked glycosylation, which typically occurs via an alpha linkage of the glycan to the hydroxyl group of a serine or threonine residue on a protein

Index terms

  • Disorders of protein O-glycosylation
  • Defects in O-xylosylglycan synthesis
  • Beta-1,4-galactosyltransferase 7 deficiency
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  • Defects in O-N-acetylgalactosaminylglycan synthesis
  • Polypeptide N-acetylgalactosaminyl transferase deficiency
  • Hyperphosphataemic familial tumoural calcinosis
  • Defects in O-xylosyl/N-acetylgalactosaminylglycan synthesis
  • Defects in O-mannosylglycan synthesis
  • Protein-O-mannosyltransferase 1
  • Protein-O-mannosyltransferase 2 deficiency
  • Protein-O-mannose beta-1,2-N-acetyglucosaminyltransferase deficiency
  • Fukutin deficiency
  • Fukutin-related protein deficiency
  • N-acetylglucosaminyltransferase-like protein deficiency
  • O-fucose-specific beta-1,3-N-acetylglucosaminyltransferase deficiency
  • O-fucose-specific beta-1,3-N-glucosyltransferase deficiency

Exclusions from above levels

  • http://id.who.int/icd/entity/1191191920 – Disorders of lipoprotein metabolism or certain specified lipidaemias
  • 3A10.Z – Hereditary haemolytic anaemia due to enzyme deficiency
  • 5A71.01 – Congenital adrenal hyperplasia
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  • 5A81.1 – 5-alpha-reductase deficiency
  • LD28.01 – Marfan syndrome
  • LD28.1 – Ehlers-Danlos syndrome
  • LD2A.4 – androgen resistance syndrome
  • 18 – Pregnancy, childbirth or the puerperium
  • http://id.who.int/icd/entity/1004987305 – Transitory endocrine or metabolic disorders specific to fetus or newborn

Foundation children elsewhere

  • LD24.20 – Multiple osteochondromas

Sibling codes

  • 5C54.0 – Disorders of protein N-glycosylation
  • 5C54.2 – Disorders of multiple glycosylation or other pathways
  • 5C54.Y – Other specified inborn errors of glycosylation or other specified protein modification
  • 5C54.Z – Inborn errors of glycosylation or protein modification, unspecified

Foundation entity

Disorders of protein O-glycosylation – http://id.who.int/icd/entity/1883085871

Part of: 5C54: Inborn errors of glycosylation or other specified protein modification › 05: Endocrine, nutritional or metabolic diseases