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Genetic and Rare Diseases Information Center (GARD)

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Smith-Magenis syndrome


Other Names for this Disease

  • Chromosome 17p11.2 deletion syndrome
  • SMS
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.

Overview

Smith-Magenis syndrome is a developmental disorder that affects many parts of the body. The major features of this condition include mild to moderate intellectual disability, delayed speech and language skills, distinctive facial features, sleep disturbances, and behavioral problems. Most people with Smith-Magenis syndrome have a deletion of genetic material from a specific region of chromosome 17. Although this region contains multiple genes, researchers believe that the loss of one particular gene, RAI1, in each cell is responsible for most of the characteristic features of the condition. Smith-Magenis syndrome is not typically inherited, but results from a genetic change that occurs during the formation of reproductive cells (eggs or sperm) or in early fetal development.[1]
Last updated: 8/22/2014

References

  1. Smith-Magenis syndrome. Genetics Home Reference (GHR). December 2013; http://ghr.nlm.nih.gov/condition=smithmagenissyndrome. Accessed 8/22/2014.
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Basic Information

  • Genetics Home Reference (GHR) contains information on Smith-Magenis syndrome. This website is maintained by the National Library of Medicine.
  • The National Organization for Rare Disorders (NORD) is a federation of more than 130 nonprofit voluntary health organizations serving people with rare disorders. Click on the link to view information on this topic.

In Depth Information

  • The Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs.  Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Smith-Magenis syndrome. Click on the link to view a sample search on this topic.
Other Names for this Disease
  • Chromosome 17p11.2 deletion syndrome
  • SMS
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.