Alpha Thalassemia X-linked Intellectual Disability Syndrome

National Organization for Rare Disorders, Inc.

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Important
It is possible that the main title of the report Alpha Thalassemia X-linked Intellectual Disability Syndrome is not the name you expected.

Disorder Subdivisions

  • None

General Discussion

Alpha thalassemia X-linked intellectual disability (ATR-X) syndrome is a rare genetic disorder affecting multiple organ systems of the body. ATR-X syndrome is characterized by mental retardation, characteristic facial features, abnormalities of the genitourinary tract, and alpha thalassemia. Alpha thalassemia, which is a condition where there is a defect in the production of the oxygen-carrying pigments of red blood cells (hemoglobin), is not seen in every case. Additional abnormalities are usually present in most cases. ATR-X syndrome is inherited as an X-linked recessive genetic condition.

Some researchers have suggested the name XLID-hypotonic face syndrome be used to designate several disorders formerly considered separate entities including ATR-X syndrome, Carpenter-Waziri syndrome, Chudley-Lowry syndrome, Holmes-Gang syndrome and X-linked intellectual disability-arch fingerprints-hypotonia syndrome. All of these syndromes occur due to mutations of the same gene on the X chromosome. Some researchers prefer use of the name ATR-X syndrome because it is the most widely-recognized term for this disorder.

Supporting Organizations

Genetic and Rare Diseases (GARD) Information Center

PO Box 8126
Gaithersburg, MD 20898-8126
Tel: (301)251-4925
Fax: (301)251-4911
Tel: (888)205-2311
Website: http://rarediseases.info.nih.gov/GARD/

March of Dimes

1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)997-4488
Fax: (914)997-4763
Email: AskUs@marchofdimes.org or preguntas@nacersano.org
Website: http://www.marchofdimes.org and nacersano.org

NIH/National Institute of Mental Health

Health Science Writing, Press and Dissemination Branch
6001 Executive Boulevard
Bethesda, MD 20892-9663
Tel: (301)443-4513
Fax: (301)443-4279
Tel: (866)615-6464
Email: nimhinfo@nih.gov
Website: http://www.nimh.nih.gov/index.shtml

NIH/National Institute of Neurological Disorders and Stroke

P.O. Box 5801
Bethesda, MD 20824
Tel: (301)496-5751
Fax: (301)402-2186
Tel: (800)352-9424
Website: http://www.ninds.nih.gov/

Thalassemia Support Foundation

PO Box 26398
Santa Ana, CA 92799
Email: tsf@helpthals.org
Website: http://www.helpthals.org

The Arc

1825 K Street NW, Suite 1200
Washington, DC 20006
Tel: (202)534-3700
Fax: (202)534-3731
Tel: (800)433-5255
Email: info@thearc.org
Website: http://www.thearc.org

For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only.

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This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

Last Updated:  9/15/2010
Copyright  2010 National Organization for Rare Disorders, Inc.