Hageman Factor Deficiency / Disease

Diseases & Conditions

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Hageman Factor Deficiency

Synonyms of Hageman Factor Deficiency

Factor XII Deficiency
HAF Deficiency
Hageman Trait

Disorder Subdivisions

General Discussion
Hageman factor deficiency, also known as factor XII deficiency, is a rare genetic blood disorder that causes prolonged clotting (coagulation) of blood in a test tube without the presence of prolonged clinical bleeding tendencies. It is caused by a deficiency of the Hageman factor (factor XII), a plasma protein (glycoprotein). Although it is thought that factor XII is needed for blood clotting, when it is deficient, other blood clotting factors tend to compensate for its absence. This disorder is thought to be benign and usually presents no symptoms (asymptomatic); it is usually only accidentally discovered through pre-operative blood tests that are required by hospitals. Of substantial recent interest is the role of antibodies to Factor XII in recurrent pregnancy losses.
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Organizations related to Hageman Factor Deficiency

Canadian Hemophilia Society
625 President Kennedy
Quebec None H3A 1K2
Phone #: 514-848-0503
800 #: 800-668-2686
e-mail: [email protected]
Home page: http://www.hemophilia.ca
Madisons Foundation
PO Box 241956
Los Angeles CA 90024
Phone #: 310-264-0826
800 #: N/A
e-mail: [email protected]
Home page: http://www.madisonsfoundation.org
NIH/National Heart, Lung and Blood Institute Information Center
P.O. Box 30105
Bethesda MD 20824-0105
Phone #: 301-592-8573
800 #: --
e-mail: [email protected]
Home page: N/A
National Hemophilia Foundation
116 West 32nd Street
New York NY 10001
Phone #: 212-328-3737
800 #: 800-424-2634
e-mail: gwidlundDhemophilia.org
Home page: http://www.hemophilia.org

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