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Copyright 1985, 1986, 1990, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2004, 2007
Synonyms of Hemophilia
- AHF Deficiency
- AHG Deficiency
- Antihemophilic Factor Deficiency
- Antihemophilic Globulin Deficiency
- Christmas Disease
- Classical Hemophilia
Disorder Subdivisions
- Hemophilia A (Factor VIII Deficiency)
- Hemophilia B (Factor IX Deficiency)
- Hemophilia C (Factor XI Deficiency)
General Discussion
Hemophilia is a rare inherited blood clotting (coagulation) disorder caused by inactive or deficient blood proteins (usually factor VIII). Factor VIII is one of several proteins that enable the blood to clot. Hemophilia may be classified as mild, moderate, or severe. The level of severity is determined by the percentage of active clotting factor in the blood (normal percentage ranges from 50 to 150 percent). People who have severe hemophilia have less than one percent of active clotting factor in their blood.
There are three major types of hemophilia: hemophilia A (also known as classical hemophilia, factor VIII deficiency or antihemophilic globulin [AHG] deficiency); hemophilia B (Christmas disease or factor IX deficiency); and hemophilia C (factor XI deficiency). Hemophilia A and B are inherited as X-linked recessive genetic traits, while Hemophilia C is inherited as an autosomal recessive genetic trait. Therefore, while hemophilia A and B are fully expressed in males only, hemophilia C affects males and females in equal numbers.
Organizations related to Hemophilia
- Canadian Hemophilia Society
625 President Kennedy
Suite 505
Montreal
Quebec None H3A 1K2
Phone #: 514-848-0503
800 #: 800-668-2686
e-mail: chs@hemophilia.ca
Home page: http://www.hemophilia.ca
- Cochrane Cystic Fibrosis and Genetic Disorders Group
Institute of Child Health, University of Liverpool
Alder Hey Children's NHS Foundation Trust
Liverpool None L12 2 AP
Phone #: +44- (0-) 151 252 5696
800 #: --
e-mail: nikkij@liverpool.ac.uk
Home page: http://www.cfgd.cochrane.org/en/index.html
- Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg MD 20898-8126
Phone #: 301-251-4925
800 #: 888-205-2311
e-mail: ordr@od.nih.gov
Home page: http://rarediseases.info.nih.gov/Default.aspx
- Hemophilia Federation of America
210 7th St. SE
Suite 200B
Washington DC 20003
Phone #: 202-675-6984
800 #: 800-230-9797
e-mail: info@hemophiliafed.org
Home page: http://www.hemophiliafed.org
- Irsh Haemophilia Society
First Floor
Cathedral Court
New Street
Dublin None 7
Phone #: +35-3 (-0)1 657 99 00
800 #: N/A
e-mail: info@haemophilia.ie
Home page: http://www.haemophilia.ie/
- 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/
- March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains NY 10605
Phone #: 914-997-4488
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
- National Hemophilia Foundation
116 West 32nd Street
11th Floor
New York NY 10001
Phone #: 212-328-3737
800 #: 800-424-2634
e-mail: handi@hemophilia.org
Home page: http://www.hemophilia.org
- Sjældne Diagnoser / Rare Disorders Denmark
Frederiksholms Kanal 2, 3rd Floor
Copenhagen K None 1220
Phone #: 45 -33 -14 00 10
800 #: N/A
e-mail: mail@sjaeldnediagnoser
Home page: http://www.raredisorders.dk
- World Federation of Hemophilia
1425 Rene Levesque Boulevard West
Suite 1010
Montreal
Quebec Intl H3G 1T7
Phone #: 514--87-5-7944
800 #: --
e-mail: wfh@wfh.org
Home page: http://www.wfh.org
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