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    OSMED, Heterozygous

    Important
    It is possible that the main title of the report OSMED, Heterozygous 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

    • Oto-Spondylo-Megaepiphyseal Dysplasia, Autosomal Dominant
    • Oto-Spondylo-Megaepiphyseal Dysplasia, Heterozygous
    • Pierre-Robin Syndrome with Fetal Chondrodysplasia
    • Stickler Syndrome Type III
    • Weissenbacher-Zweymuller Syndrome
    • WZS

    Disorder Subdivisions

    • None

    General Discussion

    Heterozygous OSMED (oto-spondyl-megaepiphyseal dysplasia) is a rare genetic disorder characterized by skeletal malformations resulting in shortening of the upper limbs and thighs and short stature (rhizomelic dwarfism). Additional symptoms include distinctive facial features and delays in psychomotor development. After the initial period of growth deficiency, affected individuals experience gradual improvement in bone growth that leads to normal physical development by early childhood. Mental and motor development is also normal by early childhood. In some cases, affected individuals develop hearing loss. Heterozygous OSMED occurs because of disruptions or changes (mutations) to the COL11A2 gene.

    A group of collagen disorders (i.e., OSMED, Weissenbacher-Zweymuller syndrome and non-ocular Stickler syndrome or Stickler syndrome type III) are all caused by mutations to the COL11A2 gene (allelic disorders). Some researchers consider these three disorders separate entities; others believe that they are the same disorder or different expresses of one disorder. Recently, some researchers have suggested that the name OSMED be used as a general heading to consist of "heterozygous OSMED," which encompasses Weissenbacher-Zweymuller syndrome and Stickler syndrome type III and is inherited as an autosomal dominant trait and "homozygous OSMED," which encompasses autosomal recessive cases of oto-spondylo-megaepiphyseal dysplasia.

    Resources

    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

    Cleft Palate Foundation
    1504 East Franklin Street
    Suite 102
    Chapel Hill, NC 27514-2820
    USA
    Tel: (919)933-9044
    Fax: (919)933-9604
    Tel: (800)242-5338
    Email: info@cleftline.org
    Internet: http://www.cleftline.org

    Better Hearing Institute
    1444 I Street NW
    Suite 700
    Washington, DC 20005
    United States
    Tel: (202)449-1100
    Fax: (703)684-6048
    Tel: (800)327-9355
    Email: mail@betterhearing.org
    Internet: http://www.betterhearing.org

    Stickler Syndrome Support Group
    PO Box 3351
    Littlehampton, BN16 9GB
    United Kingdom
    Tel: 01903785771
    Email: info@stickler.org.uk
    Internet: http://www.stickler.org.uk

    Stickler Involved People
    15 Angelina
    Augusta, KS 67010
    Tel: (316)775-2993
    Email: sip@sticklers.org
    Internet: http://www.sticklers.org

    NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases
    Information Clearinghouse
    One AMS Circle
    Bethesda, MD 20892-3675
    USA
    Tel: (301)495-4484
    Fax: (301)718-6366
    Tel: (877)226-4267
    TDD: (301)565-2966
    Email: NIAMSinfo@mail.nih.gov
    Internet: http://www.niams.nih.gov/

    NIH/National Institute on Deafness and Other Communication Disorders
    31 Center Drive, MSC 2320
    Communication Avenue
    Bethesda, MD 20892-3456
    Tel: (301)402-0900
    Fax: (301)907-8830
    Tel: (800)241-1044
    TDD: (800)241-1105
    Email: nidcdinfo@nidcd.nih.gov
    Internet: http://www.nidcd.nih.gov

    Pierre Robin Network
    3604 Biscayne
    Quincy, IL 62305
    USA
    Tel: (217)224-0698
    Fax: (217)224-2867
    Email: info@pierrerobin.org
    Internet: http://www.pierrerobin.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/

    American Academy of Audiology
    11730 Plaza America Drive, Suite 300
    Reston, VA 20190
    Tel: (703)790-8466
    Fax: (703)790-8631
    Tel: (800)222-2336
    Email: infoaud@audiology.org
    Internet: http://www.audiology.org

    European Skeletal Dysplasia Network
    Institute of Genetic Medicine
    Newcastle University
    International Centre for Life
    Central Parkway
    Newcastle upon Tyne, NE1 3BZ
    United Kingdom
    Tel: 441612755642
    Fax: 441612755082
    Email: info@esdn.org
    Internet: http://www.esdn.org

    Hearing Loss Association of America
    7910 Woodmont Avenue
    Suite 1200
    Bethesda, MD 20814
    Tel: (301)657-2248
    Fax: (301)913-9413
    Email: info@hearingloss.org
    Internet: http://www.hearingloss.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: 4/25/2008
    Copyright 2006 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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