Important It is possible that the main title of the report Trisomy X is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
47, XXX karyotype
47, XXX syndrome
triple X syndrome
Trisomy X is a disorder that affects females and is characterized by the presence of an additional X chromosome. Normally, females have two X chromosomes; however, females with trisomy X carry three X chromosomes in the nuclei of body cells. There are specific physical features (phenotype) associated with this chromosomal disorder. Common symptoms that can potentially occur include language-based learning disabilities, developmental dyspraxia, tall stature, low muscle tone (hypotonia), and abnormal bending or curving of the pinkies toward the ring fingers (clinodactyly). Trisomy X occurs randomly as a result from errors during the division of reproductive cells in one of the parents. This disorder occurs in one in 900 to 1,000 live births.
March of Dimes Birth Defects Foundation 1275 Mamaroneck Avenue White Plains, NY 10605 Tel: (914)997-4488 Fax: (914)997-4763 Tel: (888)663-4637 Email: Askus@marchofdimes.com Internet: http://www.marchofdimes.com
National Dissemination Center for Children with Disabilities (DELETED 1825 Connecticut Ave NW, Suite 700 Washington, DC 20009 USA Tel: (202)884-8200 Fax: (202)884-8441 Tel: (800)695-0285 TDD: (800)695-0285 Email: firstname.lastname@example.org Internet: http://www.nichcy.org
National Center for Learning Disabilities 381 Park Avenue South 1420 Suite New York, NY 10016 Tel: (212)545-7510 Fax: (212)545-9665 Tel: (888)575-7373 Email: email@example.com Internet: http://www.ncld.org/
Chromosome Disorder Outreach, Inc. P.O. Box 724 Boca Raton, FL 33429-0724 USA Tel: (561)395-4252 Fax: (561)395-4252 Email: firstname.lastname@example.org Internet: http://www.chromodisorder.org/CDO/
Learning Disabilities Association of America 4156 Library Road Pittsburgh, PA 15234-1349 Tel: (412)341-1515 Fax: (412)344-0224 Tel: (888)300-6710 Email: email@example.com Internet: http://www.ldanatl.org
International Dyslexia Association 40 York Rd 4 Florr Baltimore, MD 21204 USA Tel: (410)296-0232 Fax: (410)321-5069 Tel: (800)222-3123 Email: firstname.lastname@example.org Internet: http://www.interdys.org
UNIQUE - Rare Chromosome Disorder Support Group P.O. Box 2189 Caterham Surrey, CR3 5GN United Kingdom Tel: 4401883330766 Fax: 4401883330766 Email: email@example.com Internet: http://www.rarechromo.org
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 TDD: (888)205-3223 Internet: http://rarediseases.info.nih.gov/GARD/
Madisons Foundation PO Box 241956 Los Angeles, CA 90024 Tel: (310)264-0826 Fax: (310)264-4766 Email: firstname.lastname@example.org Internet: http://www.madisonsfoundation.org
Focus Foundation, Inc. PO Box 190 Davidsonville, MD 21035 Tel: (443)223-7323 Fax: (410)798-4801 Email: email@example.com Internet: http://www.thefocusfoundation.org
For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
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It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report
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Last Updated: 4/1/2014 Copyright 1995, 1996, 1997, 1998, 2001, 2011, 2014 National Organization for Rare Disorders, Inc.
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