Chromosome 9, Tetrasomy 9p
National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Chromosome 9, Tetrasomy 9p 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.
- Chromosome 9, Tetrasomy 9p Mosaicism
- Mosaic Tetrasomy 9p
- Tetrasomy 9p
- Tetrasomy, Short Arm of Chromosome 9
Chromosome 9, Tetrasomy 9p is a very rare chromosomal disorder in which the short arm of the ninth chromosome (9p) appears four times (tetrasomy) rather than twice in all or some cells of the body. Individuals with a normal chromosomal make-up (karyotype) have two 9th chromosomes, both of which have a short arm ("9p") and a long arm ("9q"). However, in individuals with Chromosome 9, Tetrasomy 9p, four short arms (9ps) are present in cells rather than the normal two.
The symptoms of Chromosome 9, Tetrasomy 9p may vary greatly in range and severity from case to case. Associated abnormalities may include mild growth retardation, moderate to severe delay in the attainment of skills requiring the coordination of muscular and mental activities (psychomotor retardation), and/or moderate to severe mental retardation. In addition, the disorder may be characterized by various physical abnormalities, such as malformations of the skull and facial (craniofacial) region, abnormalities of the hands and fingers, skeletal malformations, and/or heart (cardiac) defects. Chromosome 9, Tetrasomy 9p appears to result from spontaneous (de novo) errors very early in embryonic development that occur for unknown reasons (sporadically).
American Heart Association
- 7272 Greenville Avenue
- Dallas, TX 75231
- Tel: (214)784-7212
- Fax: (214)784-1307
- Tel: (800)242-8721
- Email: Review.firstname.lastname@example.org
- Website: http://www.heart.org
Chromosome Disorder Outreach, Inc.
- P.O. Box 724
- Boca Raton, FL 33429-0724
- Tel: (561)395-4252
- Fax: (561)395-4252
- Email: email@example.com
- Website: http://www.chromodisorder.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
- Website: http://rarediseases.info.nih.gov/GARD/
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
Trisomy 9 International Parent Support (9TIPS)
- 4027 E. Piedmont Drive
- Highland, CA 92346
- Tel: (909)862-4470
- Email: email@example.com
- Website: http://www.trisomy9.org/9tips.htm
UNIQUE - Rare Chromosome Disorder Support Group
- The Rare Chromosome Disorder Support Group
- Surrey, RH8 9EE
- United Kingdom
- Tel: 441883723356
- Email: firstname.lastname@example.org or email@example.com
- Website: https://www.facebook.com/pages/Unique-Rare-Chromosome-Disorder-Support-Group/130797430472
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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
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.
For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email firstname.lastname@example.org
Last Updated: 1/25/1970
Copyright 2001 National Organization for Rare Disorders, Inc.
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