Penta X Syndrome

Important

It is possible that the main title of the report Penta X Syndrome 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.

Synonyms

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• 49,XXXXX Syndrome
• XXXXX Syndrome
• 49, XXXXX Chromosome Constitution
• 49, XXXXX Karyotype
• Pentasomy X

Disorder Subdivisions

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• None

General Discussion

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Penta X Syndrome is a rare chromosomal disorder that affects females. Females normally have two X chromosomes. However, in those with Penta X Syndrome, there are three additional (or a total of five) X chromosomes in the nuclei of body cells (pentasomy X). The condition is typically characterized by moderate to severe mental retardation, short stature, malformations of the skull and facial (craniofacial) region, and/or other physical abnormalities. Characteristic craniofacial malformations may include upslanting eyelid folds (palpebral fissures), a flat nasal bridge, malformed ears, a short neck with a low hairline, and/or other findings. Penta X Syndrome may also be characterized by abnormal deviation (clinodactyly) or permanent flexion (camptodactyly) of the "pinkies" or fifth fingers; heart and/or kidney defects; deficient development of the ovaries and uterus; and/or other physical findings. The disorder results from errors during the division of reproductive cells in one of the parents.

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Resources

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Children's Craniofacial Association

13140 Coit Road

Suite 307

Dallas, TX 75240

USA

Tel: 2145709099

Fax: 2145708811

Tel: 8005353643

Email: csmith@ccakids.com

Internet: http://www.ccakids.com



Support Organization for Trisomy 18, 13, and Related Disorders

2982 South Union Street

Rochester, NY 14624-1926

Fax: (585)594-1957

Tel: (800)716-7638

Email: barbv@trisomy.org

Internet: http://www.trisomy.org



March of Dimes Birth Defects Foundation

1275 Mamaroneck Avenue

White Plains, NY 10605

Tel: (914)428-7100

Fax: (914)997-4763

Tel: (888)663-4637

Email: Askus@marchofdimes.com

Internet: http://www.marchofdimes.com



National Dissemination Center for Children with Disabilities

P.O. Box 1492

Washington, D.C. 20013

USA

Tel: 2028848200

Fax: 2028848441

Tel: 8006950285

TDD: 8006950285

Email: nichcy@aed.org

Internet: http://www.nichcy.org



The Arc (a national organization on mental retardation)

1010 Wayne Ave

Suite 650

Silver Spring, MD 20910

Tel: (301)565-3842

Fax: (301)565-3843

Tel: (800)433-5255

TDD: (817)277-0553

Email: info@thearc.org

Internet: http://www.thearc.org/



AboutFace USA

PO Box 158

South Beloit, IL 61080

USA

Tel: 8884861209

Email: info@AboutFaceUSA.org

Internet: http://www.aboutfaceusa.org



American Heart Association

National Center

7272 Greenville Avenue

Dallas, TX 75231-4596

Tel: (214)373-6300

Fax: (214)373-0268

Tel: (800)242-8721

Email: inquire@heart.org

Internet: http://www.americanheart.org



UNIQUE - Rare Chromosome Disorder Support Group

P.O. Box 2189

Caterham

Surrey, Intl CR3 5GN

United Kingdom

Tel: 44 0 1883 330766

Fax: 44 0 1883 330766

Email: info@rarechromo.org

Internet: http://www.rarechromo.org



Craniofacial Foundation of America

975 East Third Street

Chattanooga, TN 37403

Tel: (423)778-9192

Fax: (423)778-8172

Tel: (800)418-3223

Email: farmertm@erlanger.org

Internet: http://www.craniofacialcenter.com

For a Complete Report

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This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

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 orphan@rarediseases.org

Last Updated:   5/5/2003

Copyright   1991, 2001, 2003 National Organization for Rare Disorders, Inc.