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    Trisomy 13 Syndrome

    Important
    It is possible that the main title of the report Trisomy 13 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

    • Chromosome 13, Trisomy 13 Complete
    • Complete Trisomy 13 Syndrome
    • D Trisomy Syndrome
    • Patau Syndrome

    Disorder Subdivisions

    • None

    General Discussion

    Trisomy 13 Syndrome is a rare chromosomal disorder in which all or a portion of chromosome 13 appears three times (trisomy) rather than twice in cells of the body. In some affected individuals, only a percentage of cells may contain the extra 13th chromosome (mosaicism), whereas other cells contain the normal chromosomal pair.

    In individuals with Trisomy 13 Syndrome, the range and severity of associated symptoms and findings may depend on the specific location of the duplicated (trisomic) portion of chromosome 1, as well as the percentage of cells containing the abnormality. However, in many affected infants and children, such abnormalities may include developmental delays, profound mental retardation, unusually small eyes (microphthalmia), an abnormal groove in the upper lip (cleft lip), incomplete closure of the roof of the mouth (cleft palate), undescended testes (cryptorchidism) in affected males, and extra (supernumerary) fingers and toes (polydactyly). Additional malformations of the head and facial (craniofacial) area may also be present, such as a relatively small head (microcephaly) with a sloping forehead; a broad, flat nose; widely set eyes (ocular hypertelorism); vertical skin folds covering the eyes; inner corners (epicanthal folds); scalp defects; and malformed, low-set ears. Affected infants may also have incomplete development of certain regions of the brain (e.g., the forebrain); kidney (renal) malformations; and structural heart (cardiac) defects at birth (congenital). For example, characteristic heart defects may include an abnormal opening in the partition dividing the upper or lower chambers of the heart (atrial or ventricular septal defects) or persistence of the fetal opening between the two major arteries (aorta, pulmonary artery) emerging from the heart (patent ductus arteriosus). Many infants with Trisomy 13 Syndrome fail to grow and gain weight at the expected rate (failure to thrive) and have severe feeding difficulties, diminished muscle tone (hypotonia), and episodes in which there is temporary cessation of spontaneous berathing (apnea). Life-threatening complications may develop during infancy or early childhood.

    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

    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/

    Madisons Foundation
    PO Box 241956
    Los Angeles, CA 90024
    Tel: (310)264-0826
    Fax: (310)264-4766
    Email: getinfo@madisonsfoundation.org
    Internet: http://www.madisonsfoundation.org

    Let Them Hear Foundation
    1900 University Avenue, Suite 101
    East Palo Alto, CA 94303
    Tel: (650)462-3174
    Fax: (650)462-3144
    Email: info@letthemhear.org
    Internet: http://www.letthemhear.org

    Living With Trisomy 13
    76 Doolittle St.
    Brentwood, NY 11717
    Tel: (631)316-6032
    Fax: (631)513-4476
    Email: Info@livingwithtri13.org
    Internet: http://www.livingwithtri13.org

    Perkins School for the Blind
    175 North Beacon Street
    Watertown, MA 02472
    Tel: (617)924-3434
    Fax: (617)926-2027
    Email: Info@Perkins.org
    Internet: http://www.Perkins.org

    National Consortium on Deaf-Blindness
    The Teaching Research Institute
    345 N. Monmouth Avenue
    Monmouth, OR 97361
    Tel: (800)438-9376
    Fax: (503)838-8150
    Tel: (800)438-9376
    TDD: (800)854-7013
    Email: info@nationaldb.org
    Internet: http://www.nationaldb.org

    Medical Home Portal
    Dept. of Pediatrics
    University of Utah
    P.O. Box 581289
    Salt Lake City, UT 84158
    Tel: (801)587-9978
    Fax: (801)581-3899
    Email: mindy.tueller@utah.edu
    Internet: http://www.medicalhomeportal.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".

    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: 10/12/2007
    Copyright 1986, 1994, 1998, 1999, 2000, 2001, 2007 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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