World Library  
Flag as Inappropriate
Email this Article

Recessive multiple epiphyseal dysplasia

Article Id: WHEBN0028114028
Reproduction Date:

Title: Recessive multiple epiphyseal dysplasia  
Author: World Heritage Encyclopedia
Language: English
Subject: Chromosome 5 (human)
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Recessive multiple epiphyseal dysplasia

Autosomal recessive multiple epiphyseal dysplasia
Classification and external resources
OMIM DiseasesDB 30716

Autosomal recessive multiple epiphyseal dysplasia (ARMED), also called epiphyseal dysplasia, multiple, 4 (EDM4), multiple epiphyseal dysplasia with clubfoot or –with bilayered patellae,[1] is an autosomal recessive[2] congenital disorder affecting cartilage and bone development. The disorder has relatively mild signs and symptoms, including joint pain, scoliosis, and malformations of the hands, feet, and knees.[3]

Some affected individuals are born with an inward- and downward-turning foot (a clubfoot). An abnormality of the kneecap called a double-layered patella is also relatively common. Although some people with recessive multiple epiphyseal dysplasia have short stature as adults, most are of normal height. The incidence is unknown as many cases are not diagnosed due to mild symptoms.

Cause and Genetics

Mutations in the SLC26A2 (DTDST) gene, located at human chromosome 5q32-33.1, are the cause of ARMED.[2][4] It is considered a milder disorder within a spectrum of skeletal disorders caused by mutations in the gene, which encodes a protein that is essential for the normal development of cartilage and its conversion to bone.[3] Mutations in the SLC26A2 gene alter the structure of developing cartilage, preventing bones from forming properly and resulting in associated skeletal maldevelopment.[3]

The disorder is inherited in an autosomal recessive manner.[2] This means the defective gene responsible for the disorder is located on an autosome (chromosome 5 is an autosome), and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder. The parents of an individual with an autosomal recessive disorder both carry one copy of the defective gene, but usually do not experience any signs or symptoms of the disorder.

See also

References

External links

  • Online 'Mendelian Inheritance in Man' (OMIM) 226900
  • Rare Diseases
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.