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Vonicog alfa, sold under the brand names Vonvendi and Veyvondi, is a medication used to control bleeding in adults with von Willebrand disease (an inherited bleeding disorder). [6] [5] [7] [8] It is a recombinant von Willebrand factor. [6] [5] The most common adverse reactions are generalized itching, vomiting, nausea, dizziness, and vertigo. [6]
Von Willebrand disease (VWD) is the most common hereditary blood-clotting disorder in humans. An acquired form can sometimes result from other medical conditions. [1] It arises from a deficiency in the quality or quantity of von Willebrand factor (VWF), a multimeric protein that is required for platelet adhesion.
Desmopressin (DDAVP) is usually the first line treatment for mild to moderate type 1 von Willebrand disease. [1] It is not recommended in severe disease or in those with abnormal factor VIII. [1] Usefulness in type 2A, 2M, or 2N von Willebrand disease is variable. [1] Generally not recommended in 2B and type 3 von Willebrand disease. [1]
Von Willebrand factor (VWF) (German: [fɔn ˈvɪləbʁant]) is a blood glycoprotein that promotes hemostasis, specifically, platelet adhesion.It is deficient and/or defective in von Willebrand disease and is involved in many other diseases, including thrombotic thrombocytopenic purpura, Heyde's syndrome, and possibly hemolytic–uremic syndrome. [5]
It is the fourth most common coagulation disorder after von Willebrand's disease and haemophilia A and B. In the United States, it is thought to affect 1 in 100,000 of the adult population, making it 10% as common as haemophilia A. [ 1 ] [ 5 ]
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vWD is visible as lobes in cryo-EM images of the vWF. In a "D" domain of the vWF it is associated with a few other cysteine-rich domains named C8 (Pfam PF08742), TIL (Pfam PF01826) and vWE. [2] A crystal structure for the "D" domains in vWF (D' and D3) was solved in 2018 ( ). The VWD domain proper and the vWE domain are composed mostly of ...
Heyde's syndrome; A stenotic aortic valve: Specialty: Cardiology, general surgery, Hematology: Symptoms: Aortic valve stenosis symptoms: Chest pain (angina) or tightness Shortness of breath, especially during exertion or when lying down Fatigue or weakness Irregular heartbeat or heart palpitations Dizziness or fainting episodes Gastrointestinal bleeding symptoms: Occult (hidden) or overt ...