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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. The gene that codes the protein is referred to as F5.
14067 Ensembl ENSG00000198734 ENSMUSG00000026579 UniProt P12259 O88783 RefSeq (mRNA) NM_000130 NM_007976 RefSeq (protein) NP_000121 NP_032002 Location (UCSC) Chr 1: 169.51 – 169.59 Mb Chr 1: 163.98 – 164.05 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Coagulation factor V (Factor V), also less commonly known as proaccelerin or labile factor, is a protein involved in ...
APC resistance is the inability of protein C to cleave Factor Va and/or Factor VIIIa, which allows for longer duration of thrombin generation and may lead to a hypercoagulable state. This may be hereditary or acquired. [4] The best known and most common hereditary form is Factor V Leiden, which is responsible for more than 95% of cases. [5]
The exact prevalence of protein S deficiency in the population is unknown; it is found 1.3–5% of people with thrombosis. [14] The minor ("type 2") thrombophilias are much more common. Factor V Leiden is present in 5% of the population of Northern European descent, but much rarer in those of Asian or African extraction.
The type of haemophilia known as parahaemophilia is a mild and rare form and is due to a deficiency in factor V. This type can be inherited or acquired. [10] A non-genetic form of haemophilia is caused by autoantibodies against factor VIII and so is known as acquired haemophilia A. [15]
These proteins include platelet factor V, von Willebrand factor, fibrinogen, thrombospondin-1, and osteonectin. [3] There is also a quantitative deficiency in the platelet protein multimerin 1 . Furthermore, upon QPD platelet activation, uPA can be released into forming clots and accelerate clot lysis, resulting in delayed-onset bleeding (12 ...
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Congenital factor X deficiency is also extremely rare, affecting an estimated 1 in 1,000,000. [23] A point mutation in the gene encoding factor V can lead to a hypercoagulability disorder called factor V Leiden. In factor V Leiden, a G1691A nucleotide replacement results in an R506Q amino acid mutation.