Chromosome 9, Trisomy Mosaic
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Chromosome 9, Trisomy Mosaic is not the name you expected.
Chromosome 9, Trisomy Mosaic, also known as Trisomy 9 Mosaicism syndrome, is a rare chromosomal disorder in which the entire 9th chromosome appears three times (trisomy) rather than twice in some cells of the body. The term "mosaic" indicates that some cells contain the extra chromosome 9, while others have the normal chromosomal pair.
Associated symptoms and findings may vary greatly in range and severity, depending on the percentage of cells with the extra chromosome. However, common features include growth deficiency before birth (intrauterine growth retardation); mental retardation; structural malformations of the heart that are present at birth (congenital heart defects); and/or distinctive abnormalities of the skull and facial (craniofacial) region, such as a sloping forehead, a bulbous nose, short eyelid folds (palpebral fissures), deeply set eyes, and/or low-set, malformed ears. The syndrome may also be characterized by musculoskeletal, genital, kidney (renal), and/or additional physical abnormalities. Chromosome 9, Trisomy Mosaic may be caused by errors during the division of a parent's reproductive cells (meiosis) or during the division of body tissue cells (somatic cells) early in the development of the embryo (mitosis).
- PO Box 751112
- Las Vegas, NV 89136
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- Fax: (702)341-5351
- Tel: (888)486-1209
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- Website: http://www.ameriface.org
American Heart Association
- 7272 Greenville Avenue
- Dallas, TX 75231
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- Fax: (214)784-1307
- Tel: (800)242-8721
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- Website: http://www.heart.org
Craniofacial Foundation of America
- 975 East Third Street
- Chattanooga, TN 37403
- Tel: (423)778-9176
- Fax: (423)778-8172
- Tel: (800)418-3223
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- Website: http://www.craniofacialfoundation.org/www
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 email@example.com
- Website: http://www.marchofdimes.org and nacersano.org
Support Organisation for Trisomy and Related Disorders
- Email: firstname.lastname@example.org
- Website: http://www.trisomy9.org
Support Organization for Trisomy 13/18 and Related Disorders, UK
- c/o Christine Rose
- 48 Froggatts Ride
- West Midlands, B76 2TQ SOFT
- United Kingdom
- Tel: 1213513122
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- Website: http://www.soft.org.uk
Support Organization for Trisomy 18, 13, and Related Disorders
- 2982 S. Union Street
- Rochester, NY 14624-1926
- Fax: (585)594-1957
- Tel: (800)716-7638
- Email: firstname.lastname@example.org
- Website: http://www.trisomy.org
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- Fax: (202)534-3731
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- Website: http://www.thearc.org
Trisomy 9 International Parent Support (9TIPS)
- 4027 E. Piedmont Drive
- Highland, CA 92346
- Tel: (909)862-4470
- Email: firstname.lastname@example.org
- Website: http://www.trisomy9.org/9tips.htm
UNIQUE - Rare Chromosome Disorder Support Group
- G1 The Stables
- Station Road West
- Oxted, RH8 9EE
- United Kingdom
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- Website: http://www.rarechromo.org/html/home.asp
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.
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.
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: 5/10/2008
Copyright 2003 National Organization for Rare Disorders, Inc.
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