Von Willebrand Disease

Abstract

1. Stacy Cooper, MD 2. Clifford Takemoto, MD 1. Charlotte Bloomberg Children’s Center, Johns Hopkins Hospital Baltimore, MD 1. 1. Nichols W, 2. Hultin MB, 3. James AH, 4. et al Von Willebrand Disease (VWD): Evidence-Based Diagnosis and Management Guidelines, The National Heart, Lung, and Blood Institute (NHLBI) Expert Panel Report (USA) . Nichols W, Hultin MB, James AH, et al. Haemophilia. 2008;14(2):171–232 [OpenUrl][1][CrossRef][2][PubMed][3][Web of Science][4] 2. 1. O’Brien SH Bleeding Scores: Are They Really Useful? O’Brien SH. Am Soc Hematol Educ Program. 2012;2012(1):152–156 [OpenUrl][5] 3. 1. Montgomery G, 2. Cox JG 1. Orkin SH, 2. Nathan DG, 3. Ginsburg D, 4. Look AT, 5. Fisher DE, 6. Lux SE, 7. Lantigua CJ Von Willebrand Disease . Montgomery G, Cox JG. In: Orkin SH, Nathan DG, Ginsburg D, Look AT, Fisher DE, Lux SE, Lantigua CJ. Nathan and Oski’s Hematology of Infancy and Childhood. 7th ed. Philadelphia, PA: Saunders; 2009:1487–1524 Von Willebrand disease (vWD) is an inherited bleeding diathesis. It is caused by quantitative or qualitative defects in von Willebrand factor (vWF), which functions to bind platelets to damaged endothelium and to stabilize factor VIII (FVIII). A range of mutations have been identified in this protein, encompassing the spectrum of single missense mutations to large deletions. Because of variation in the diagnostic criteria for vWD, debate exists regarding the prevalence; however, some studies estimate it to be as high as 1% to 2% of the population when including children and adults. There are 3 major categories of vWD, classified as partial deficiency of vWF (type 1), functional defects (type 2), and complete deficiency of vWF (type 3). Type 2 can be further subcategorized based on the 4 subtypes of specific qualitative defects of the multimers (types 2A, 2B, 2M, and 2N). The different types of vWD vary in severity. Type 1 is the most common, an autosomal dominant disorder that comprises approximately 75% of vWD patients, and is usually confined to mild bleeding. Type 2 may demonstrate either dominant or recessive inheritance, and type 3 is autosomal recessive, with … [1]: {openurl}?query=rft.jtitle%253DHaemophilia%2B%253A%2B%2Bthe%2Bofficial%2Bjournal%2Bof%2Bthe%2BWorld%2BFederation%2Bof%2BHemophilia%26rft.stitle%253DHaemophilia%26rft.aulast%253DNichols%26rft.auinit1%253DW.%2BL.%26rft.volume%253D14%26rft.issue%253D2%26rft.spage%253D171%26rft.epage%253D232%26rft.atitle%253Dvon%2BWillebrand%2Bdisease%2B%2528VWD%2529%253A%2Bevidence-based%2Bdiagnosis%2Band%2Bmanagement%2Bguidelines%252C%2Bthe%2BNational%2BHeart%252C%2BLung%252C%2Band%2BBlood%2BInstitute%2B%2528NHLBI%2529%2BExpert%2BPanel%2Breport%2B%2528USA%2529.%26rft_id%253Dinfo%253Adoi%252F10.1111%252Fj.1365-2516.2007.01643.x%26rft_id%253Dinfo%253Apmid%252F18315614%26rft.genre%253Darticle%26rft_val_fmt%253Dinfo%253Aofi%252Ffmt%253Akev%253Amtx%253Ajournal%26ctx_ver%253DZ39.88-2004%26url_ver%253DZ39.88-2004%26url_ctx_fmt%253Dinfo%253Aofi%252Ffmt%253Akev%253Amtx%253Actx [2]: /lookup/external-ref?access_num=10.1111/j.1365-2516.2007.01643.x&link_type=DOI [3]: /lookup/external-ref?access_num=18315614&link_type=MED&atom=%2Fpedsinreview%2F35%2F3%2F136.atom [4]: /lookup/external-ref?access_num=000253626100001&link_type=ISI [5]: {openurl}?query=rft.jtitle%253DAm%2BSoc%2BHematol%2BEduc%2BProgram%26rft.volume%253D2012%26rft.spage%253D152%26rft.genre%253Darticle%26rft_val_fmt%253Dinfo%253Aofi%252Ffmt%253Akev%253Amtx%253Ajournal%26ctx_ver%253DZ39.88-2004%26url_ver%253DZ39.88-2004%26url_ctx_fmt%253Dinfo%253Aofi%252Ffmt%253Akev%253Amtx%253Actx