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    Chromosome 5, Trisomy 5p

    Important
    It is possible that the main title of the report Chromosome 5, Trisomy 5p 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

    • trisomy 5p
    • chromosome 5, trisomy 5p, complete (5p11-ter), included
    • chromosome 5, trisomy 5p, partial, included
    • dup(5p) syndrome
    • duplication 5p syndrome

    Disorder Subdivisions

    • None

    General Discussion

    Trisomy 5p is a rare chromosomal disorder in which all or a portion of the short arm (p) of chromosome 5 (5p) appears three times (trisomy) rather than twice in cells of the body. Often the duplicated portion of 5p (trisomy) is due to a complex rearrangement involving other chromosomes. These individuals have a variable phenotype depending on which chromosome is involved, the size of the duplication and whether there is loss of material from the same or another chromosome. There are rare cases with an isolated duplication of 5p. These individuals have less variability. The variability that does appear is due to the size and location of the duplication. The individuals with only the duplication allow a better description of the symptoms (phenotype) and definition of a critical region for certain symptoms (cardiac abnormalities and seizures). Many affected infants and children have abnormalities that include low muscle tone (hypotonia); an unusually large head (macrocephaly) and additional abnormalities of the head and facial (craniofacial) area; long, slender fingers (arachnodactyly); delays in the acquisition of skills requiring the coordination of mental and physical activities (psychomotor retardation); and intellectual disability. Some affected individuals may have heart defects and seizures. Not all individuals with trisomy 5p will have all of the symptoms of the disorder.

    Resources

    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: barbv@trisomy.org
    Internet: http://www.trisomy.org

    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

    The Arc
    1825 K Street NW, Suite 1200
    Washington, DC 20006
    Tel: (202)534-3700
    Fax: (202)534-3731
    Tel: (800)433-5255
    TDD: (817)277-0553
    Email: info@thearc.org
    Internet: http://www.thearc.org

    Chromosome Disorder Outreach, Inc.
    P.O. Box 724
    Boca Raton, FL 33429-0724
    USA
    Tel: (561)395-4252
    Fax: (561)395-4252
    Email: info@chromodisorder.org
    Internet: http://www.chromodisorder.org/CDO/

    Support Organization for Trisomy 13/18 and Related Disorders, UK
    c/o Christine Rose
    48 Froggatts Ride
    Walmley
    Sutton Coldfield
    West Midlands, B76 2TQ SOFT
    United Kingdom
    Tel: 01213513122
    Email: enquiries@soft.org.uk
    Internet: http://www.soft.org.uk

    UNIQUE - Rare Chromosome Disorder Support Group
    P.O. Box 2189
    Caterham
    Surrey, CR3 5GN
    United Kingdom
    Tel: 4401883330766
    Fax: 4401883330766
    Email: info@rarechromo.org
    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/

    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".

    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: 3/19/2013
    Copyright 1994, 2000, 2001, 2003, 2010, 2013 National Organization for Rare Disorders, Inc.

    WebMD Medical Reference from the National Organization for Rare Disorders

    Last Updated: May 28, 2015
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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