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rs8050894, is located on chromosome 16 in the gene VKORC1. VKORC1 is the primary target of the drug warfarin (Coumadin), a commonly used oral anticoagulant. rs8050894 is one of several polymorphisms found in VKORC1 that is associated with specific warfarin doses ([PMID 15930419]). Other polymorphisms in VKORC1 (rs7196161, rs9923231, rs9934438, rs2359612) are equally predictive of warfarin dose requirement in both European and Asian-descent individuals.
Other polymorphisms found in the gene cytochrome P450 2C9 (CYP2C9) influence the metabolism of warfarin and have a smaller effect on warfarin dose. These polymorphisms are rs1799853 (CYP2C9*2) and rs1057910 (CYP2C9*3).
[PMID 19436136] Association of sequence variations in vitamin K epoxide reductase and gamma-glutamyl carboxylase genes with biochemical measures of vitamin K status
[PMID 21179439] VKORC1 common variation and bone mineral density in the Third National Health and Nutrition Examination Survey
[PMID 17387222] Genetic-based dosing in orthopedic patients beginning warfarin therapy.
[PMID 17456829] Evaluation of genetic factors for warfarin dose prediction.
[PMID 18252229] Warfarin pharmacogenetics: CYP2C9 and VKORC1 genotypes predict different sensitivity and resistance frequencies in the Ashkenazi and Sephardi Jewish populations.
[PMID 18305455] Use of pharmacogenetic and clinical factors to predict the therapeutic dose of warfarin.
[PMID 18466099] Influence of CYP2C9 and VKORC1 on warfarin dose, anticoagulation attainment and maintenance among European-Americans and African-Americans.
[PMID 18523153] Regulatory polymorphism in vitamin K epoxide reductase complex subunit 1 (VKORC1) affects gene expression and warfarin dose requirement.
[PMID 18559094] Warfarin dose and INR related to genotypes of CYP2C9 and VKORC1 in patients with myocardial infarction.
[PMID 18752379] Warfarin pharmacogenetics.
[PMID 18809808] Ethnic differences in cardiovascular drug response: potential contribution of pharmacogenetics.
[PMID 18855533] VKORC1 polymorphisms, haplotypes and haplotype groups on warfarin dose among African-Americans and European-Americans.
[PMID 19074728] Relative contribution of CYP2C9 and VKORC1 genotypes and early INR response to the prediction of warfarin sensitivity during initiation of therapy.
[PMID 19228618] Estimation of the warfarin dose with clinical and pharmacogenetic data.
[PMID 19955245] Warfarin sensitivity genotyping: a review of the literature and summary of patient experience.
[PMID 21359226] The genomic ancestry of individuals from different geographical regions of Brazil is more uniform than expected.
|qualified_impact||Insufficiently evaluated pharmacogenetic|
[PMID 23662025] Genetic variation and haplotype structure of the gene Vitamin K epoxide reductase complex, subunit 1 in the Tamilian population
[PMID 23133420] Pharmacogenomic Diversity among Brazilians: Influence of Ancestry, Self-Reported Color, and Geographical Origin.