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Factor V Leiden (rs6025 or F5 p.R506Q [1]) is a variant (mutated form) ... Women with factor V Leiden have a substantially increased risk of clotting in pregnancy ...
[13] [14] [5] [4] [2] [15] Pregnancy [7] and ethinylestradiol (EE)-containing combined birth control pills increase APC resistance as measured by either the aPTT- or ETP-based test. [ 4 ] [ 5 ] [ 15 ] EE-containing birth control pills show different degrees of influence on the ETP-based test depending on the progestin , which may be due to ...
Pregnancy itself is a factor of hypercoagulability (pregnancy-induced hypercoagulability), as a physiologically adaptive mechanism to prevent post partum bleeding. [1] However, when combined with an additional underlying hypercoagulable states, the risk of thrombosis or embolism may become substantial.
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 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]
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 ...
A 2006 meta-analysis showed only a 1.3-fold increased risk for coronary disease. [6] Deficiencies in the anticoagulants Protein C and Protein S further increase the risk five- to tenfold. [2] Behind non-O blood type [7] and factor V Leiden, prothrombin G20210A is one of the most common genetic risk factors for venous thromboembolism. [4]
The last category, alterations in the constitution of blood, [6] has numerous possible risk factors such as hyperviscosity, coagulation factor V Leiden mutation, coagulation factor II G2021A mutation, deficiency of antithrombin III, protein C or S deficiency, nephrotic syndrome, changes after severe trauma or burn, cancer, late pregnancy and ...