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Achondrogenesis type 1A

Other Names for this Disease
  • ACG1A
  • Achondrogenesis Houston-Harris type
  • Houston-Harris achondrogenesis
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Achondrogenesis is a group of severe disorders that are present from birth and affect the development of cartilage and bone. Infants with achondrogenesis usually have a small body, short arms and legs, and other skeletal abnormalities that cause life-threatening complications.[1]  There are at least three forms of achondrogenesis, type 1A, type 1B and type 2, which are distinguished by signs and symptoms, pattern of inheritance, and the results of imaging studies such as x-rays (radiology), tissue analysis (histology), and genetic testing. [2] Type 1A and 1B achondrogenesis are both inherited in an autosomal recessive pattern.  Type 1B may be caused by mutations in the SLC26A2 gene.  Type 2 achondrogenesis is inherited in an autosomal dominant pattern and is caused by new (de novo) mutations in the COL2A1 gene.[1]
Last updated: 10/18/2013


  1. Achondrogenesis. Genetics Home Reference. February, 2008; Accessed 10/25/2010.
  2. Faivre L. and Cormier-Daire V.. Achondrogenesis. Orphanet. May, 2003; Accessed 10/24/2010.
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Basic Information

  • Genetics Home Reference (GHR) contains information on Achondrogenesis type 1A. 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

  • 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 Achondrogenesis type 1A. Click on the link to view a sample search on this topic.