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Hereditary angioedema

Other Names for this Disease
  • Angioedema, hereditary
  • Deficiency of C1 esterase inhibitor
  • HAE
  • HANE
  • Hereditary angioedema type 1
More Names
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Hereditary angioedema (HAE) is an immune disorder characterized by recurrent episodes of severe swelling. The most commonly affected areas of the body are the limbs, face, intestinal tract, and airway.[1] HAE is caused by low levels or improper function of a protein called C1 inhibitor which affects the blood vessels.[2] This condition is inherited in an autosomal dominant pattern.[1]

There are three types of HAE, types I, II, and III. The types can be distinguished by their underlying causes and levels of C1 inhibitor in the blood. Type I and II are caused by mutations in the SERPING1 gene. Some cases of type III are associated with mutations in the F12 gene. Other genes are likely to be identified as the cause of other cases of HAE type III.[1]
Last updated: 5/25/2011


  1. Hereditary angioedema. Genetics Home Reference (GHR). 2009; Accessed 1/24/2011.
  2. Dugdale DC, Henochowicz SI. Hereditary angioedema. MedlinePlus. 2010; Accessed 1/24/2011.
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Basic Information

  • Genetics Home Reference (GHR) contains information on Hereditary angioedema. This website is maintained by the National Library of Medicine.
  • MedlinePlus was designed by the National Library of Medicine to help you research your health questions, and it provides more information about this topic.
  • 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

  • Medscape Reference provides information on this topic. Click on the link to view this information. You may need to register to view the medical textbook, but registration is free.
  • The Online Mendelian Inheritance in Man (OMIM) is an 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 Hereditary angioedema. Click on the link to view a sample search on this topic.

Press Releases

  • The U.S. Food and Drug Administration (FDA) has recently approved Cinryze, Berinert and Kalbitor in the United States to protect people with hereditary angioedema (HAE). Click on the links above to read the FDA press releases related to these medications.