Diseases & Conditions


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Thrombocytopenia Absent Radius Syndrome


Synonyms of Thrombocytopenia Absent Radius Syndrome
  • Radial Aplasia-Amegakaryocytic Thrombocytopenia
  • Radial Aplasia-Thrombocytopenia Syndrome
  • TAR Syndrome
  • Thrombocytopenia-Absent Radii Syndrome

Disorder Subdivisions

  • Tetraphocomelia-Thrombocytopenia Syndrome


General Discussion
Thrombocytopenia-absent radius (TAR) syndrome is a rare disorder that is present at birth (congenital). It is characterized by low levels of platelets in the blood (thrombocytopenia) and absence (aplasia) of the long, thin bones of the forearms (radii). Other common abnormalities are often present including additional skeletal defects such as absence or underdevelopment of the other bones of the forearm (ulnae), structural malformations of the heart (congenital heart defects), kidney (renal) defects. Affected individuals may be abnormally short for their age (short stature) and exhibit cow?s milk intolerance. TAR syndrome is believed to be inherited as an autosomal recessive trait. However, evidence suggests that inheritance in TAR syndrome may be more complex than simple recessive inheritance in some cases.

Organizations related to Thrombocytopenia Absent Radius Syndrome
  • American Heart Association
    National Center
    Dallas TX 75231-4596
    Phone #: 214-373-6300
    800 #: 800-242-8721
    e-mail: inquire@heart.org
    Home page: http://www.americanheart.org
  • Congenital Heart Anomalies, Support, Education, & Resources
    2112 North Wilkins Road
    Swanton OH 43558
    Phone #: 419-825-5575
    800 #: --
    e-mail: chaser@compuserve.com
    Home page: http://www.csun.edu/~hcmth011/chaser/chaser-news.html
  • MUMS (Mothers United for Moral Support, Inc) National Parent-to-Parent Network
    150 Custer Court
    Green Bay WI 54301-1243
    Phone #: 920-336-5333
    800 #: 877-336-5333
    e-mail: mums@netnet.net
    Home page: http://www.netnet.net/mums/
  • Madisons Foundation
    PO Box 241956
    Los Angeles CA 90024
    Phone #: 310-264-0826
    800 #: N/A
    e-mail: getinfo@madisonsfoundation.org
    Home page: http://www.madisonsfoundation.org
  • March of Dimes Birth Defects Foundation
    1275 Mamaroneck Avenue
    White Plains NY 10605
    Phone #: 914-428-7100
    800 #: 888-663-4637
    e-mail: Askus@marchofdimes.com
    Home page: http://www.marchofdimes.com
  • NIH/National Heart, Lung and Blood Institute Information Center
    P.O. Box 30105
    Bethesda MD 20824-0105
    Phone #: 301-592-8573
    800 #: --
    e-mail: nhlbiinfo@rover.nhlbi.nih.gov
    Home page: N/A
  • Reach: The Association for Children with Hand or Arm Deficiency
    P.O. Box 54
    Cornwall, Intl TR13 8WD
    Phone #: 084-5 1-306225
    800 #: --
    e-mail: reach@reach.org.uk
    Home page: http://www.reach.org.uk
  • Thrombocytopenia Absent Radius Syndrome Association
    212 Sherwood Drive
    Linwood NJ 08221-9745
    Phone #: 609-927-0418
    800 #: --
    e-mail: tarsa@aol.com
    Home page: N/A



For a Complete Report

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