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X-linked intellectual disability-acromegaly-hyperactivity syndrome

Disease definition

X-linked intellectual disability-acromegaly-hyperactivity syndrome is characterised by severe intellectual deficit, acromegaly and hyperactivity. The syndrome has been described in two half-brothers. Dysarthria, aggressive behaviour, a characteristic facies (an acromegalic and triangular face with a long nose) and macroorchidism were also present. The mother displayed moderate intellectual deficit and milder facial anomalies. Central nervous system anomalies were identified in the two boys: subarachnoid cysts and hyperdensity in the pontine region.

ORPHA:85327

Classification level: Disorder
  • Synonym(s): -
  • Prevalence: <1 / 1 000 000
  • Inheritance: X-linked recessive 
  • Age of onset: Childhood
  • ICD-10: Q87.8
  • OMIM: -
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -
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