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20q11.2 microdeletion syndrome

Disease definition

A rare, genetic, syndromic intellectual disability characterized by psychomotor delay, hypotonia, feeding difficulties, failure to thrive, anomalies of the hands and feet (clinodactyly, camptodactyly, brachydactyly, feet malposition), and craniofacial dysmorphism. Associated prenatal growth retardation, and gastrointestinal, heart and eye anomalies have been reported.


Classification level: Disorder
  • Synonym(s):
    • Del(20)(q11.2)
    • Monosomy 20q11
  • Prevalence: <1 / 1 000 000
  • Inheritance: Not applicable 
  • Age of onset: Neonatal, Antenatal
  • ICD-10: Q93.5
  • OMIM: -
  • UMLS: -
  • MeSH: -
  • GARD: -
  • MedDRA: -
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