Other Names for this Disease
- Thrombocytopenia absent radius syndrome
- Absent radii and thrombocytopenia
- Thrombocytopenia absent radii
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thrombocytopenia. The thrombocytopenia often appears first in infancy but becomes less severe or returns to normal over time. Infants and young children are particularly vulnerable to episodes of severe bleeding which may occur in the brain and other organs. Children who survive this period and do not have damaging bleeding in the brain usually have a normal life expectancy and normal intellectual development. Other signs and symptoms vary but may include heart defects, kidney defects, and other skeletal abnormalities. About half of people with TAR syndrome also have difficulty digesting cow's milk. TAR syndrome is thought be caused by a deletion of genes on chromosome 1q21.1 in concert with another genetic change that has yet to be identified. Click here to see a diagram of chromosome 1.TAR syndrome is characterized by the absence of a bone called the radius in each forearm, short stature, and
Last updated: 3/26/2012
- Thrombocytopenia-absent radius syndrome. Genetics Home Reference. October 2012; http://ghr.nlm.nih.gov/condition=thrombocytopeniaabsentradiussyndrome.
- The American Society for Surgery of the Hand provides information on congenital differences of the hand. Click on American Society for Surgery of the Hand to view the information page.
- The Children’s Hospital Boston has a information page on congenital limb defects. Click on the link above to view this information page.
- Genetics Home Reference (GHR) contains information on TAR syndrome. This website is maintained by the National Library of Medicine.
- More information on limb abnormalities can be found at the following link from MEDLINEplus, the National Library of Medicine Web site designed to help you research your health questions.
- The National Cancer Institute provides the most current information on cancer for patients, health professionals, and the general public.
- The University of Kansas Medical Center Web site lists resources for people with limb defects and their families. Click on the link above to view this list.
- Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
- The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
- Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine.
- Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
- PubMed is a searchable database of medical literature and lists journal articles that discuss TAR syndrome. Click on the link to view a sample search on this topic.