Down’s syndrome: systemic features

Evidence-based neurology checklist on down’s syndrome: systemic features: Genetics Complete trisomy of chromosome 21: in 95% cases Chromosomal translocations: in 4% Mosaicism: in 1% Epidemiological features Dysmorphic features Cardiac features Gastrointestinal features Ophthalmic features…

Genetics

  • Complete trisomy of chromosome 21: in 95% cases
  • Chromosomal translocations: in 4%
  • Mosaicism: in 1%

Epidemiological features

Dysmorphic features

Cardiac features

Gastrointestinal features

Ophthalmic features

Endocrine features

Other features

References

  1. Santoro JD, Pagarkar D, Chu DT, et al. Neurologic complications of Down syndrome: a systematic review. J Neurol 2021; 268:4495-4509. 
  2. Lott IT. Neurological phenotypes for Down syndrome across the life span. Prog Brain Res 2012; 197:101-121.
  3. Noble J. Natural history of Down's syndrome: a brief review for those involved in antenatal screening. J Med Screen 1998; 5:172-177.
  4. Lott IT, Dierssen M. Cognitive deficits and associated neurological complications in individuals with Down's syndrome. Lancet Neurol 2010; 9:623-633.
  5. Fortea J, Zaman SH, Hartley S, Rafii MS, Head E, Carmona-Iragui M. Alzheimer's disease associated with Down syndrome: a genetic form of dementia. Lancet Neurol 2021; 20:930-942. 
  6. And 5 more. Subscribe to see the full list

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