Orphanet: Southeast Asian ovalocytosis

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Southeast Asian ovalocytosis

Disease definition

Southeast Asian ovalocytosis (SAO) is a rare hereditary red cell membrane defect characterized by the presence of oval-shaped erythrocytes and with most patients being asymptomatic or occasionally manifesting with mild symptoms such as pallor, jaundice, anemia and gallstones.


Classification level: Disorder
  • Synonym(s):
    • Hereditary ovalocytosis
    • Melanesian elliptocytosis
    • Melanesian ovalocytosis
    • SAO
    • Stomatocytic elliptocytosis
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal dominant 
  • Age of onset: All ages
  • ICD-10: D58.1
  • OMIM: 166900
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -

Detailed information


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