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Pathophysiology of factor V Leiden gene mutation. Factor V Leiden is an autosomal dominant genetic condition that exhibits incomplete penetrance, i.e. not every person who has the mutation develops the disease. The condition results in a factor V variant that cannot be as easily degraded by activated protein C.
Coagulation factor V (Factor V), also less commonly known as proaccelerin or labile factor, is a protein involved in coagulation, encoded, in humans, by F5 gene. [5] In contrast to most other coagulation factors, it is not enzymatically active but functions as a cofactor . [ 5 ]
Factor V Leiden is an inherited blood clotting disorder. It can cause life-threatening clots in the body and complications during pregnancy. What you need to know about factor V Leiden - a blood ...
The activated protein C resistance (APCR) test is a coagulation test used in the evaluation and diagnosis of activated protein C (APC) resistance, a form of hypercoagulability.
Thus, Factor VIIIa is less efficiently inactivated in factor V Leiden, further increasing the risk of thrombosis. [25] In fact, Factor V Leiden is the most common cause of inherited thrombosis. [26] Heterozygous factor V Leiden is present in approximately 5% of the white population in the United States and homozygous factor V Leiden is found ...
The defect was called factor V Leiden, as genetic abnormalities are typically named after the place where they are discovered. [51] Two years later, the same group described a common mutation in the prothrombin gene that caused elevation of prothrombin levels and a mild increase in thrombosis risk. [4] [5] [52]
The best known and most common hereditary form is Factor V Leiden, which is responsible for more than 95% of cases. [5] Other genetic causes include Factor V Cambridge (VThr306) and the factor V HR2 haplotype (A4070G mutation). [5] [6] Acquired forms of APC resistance occur in the presence of elevated Factor VIII concentrations.
Protein C deficiency is a rare genetic trait that predisposes to thrombotic disease. [83] Protein S deficiency: Factor V Leiden: Thrombocytosis: Idiopathic thrombocytopenic purpura: D69.3: 6673: D016553 Idiopathic thrombocytopenic purpura (ITP) is the condition of having a low platelet count (thrombocytopenia) of no known cause . Recurrent ...