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Influence of CYP2C9 polymorphisms, demographic factors and concomitant drug therapy on warfarin metabolism and maintenance doseHerman, Darja ...Warfarin is an anticoagulant drug with narrow therapeutic index and high interindividual variability in dose requirement. S-warfarin is metabolized mainly by polymorphic cytochrome P450 (CYP) 2C9. We ... systematically quantified the influence of CYP2C9 genotype, demographic factors and concomitant drug treatment on warfarin metabolism and maintenance dose. The mean warfarin doseswere lower in carriers of one (2.71 mgžday, 59 patients) and two polymorphic alleles (1.64 mgžday, 11 patients) than in carriers of two wild-type alleles (4.88 mgžday, 118 patients). Multiple regression analysis demonstrated that CYP2C9 genotype, age, concomitant treatment with warfarin metabolism inducers and lean body weight contributed significantly to interindividual variability in warfarin dose requirement (adjusted R2=0.37). The same factors, except for age, significantly influenced S-warfarin clearance (adjusted R2=0.42). These results can serve as a starting point for designing prospective studies in patients in the initiation phase of genotype-based warfarin therapy.Source: Pharmacogenomics journal. - ISSN 1470-269X (Vol. 5, no. 3, 2005, str. 193-202)Type of material - article, component partPublish date - 2005Language - englishCOBISS.SI-ID - 1729649
Author
Herman, Darja |
Locatelli, Igor |
Grabnar, Iztok |
Peternel, Polona |
Stegnar, Mojca |
Mrhar, Aleš |
Breskvar, Katja |
Dolžan, Vita
Topics
CYP2C9 polimorphizm |
warfarin |
farmakokinetika
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Herman, Darja | 22458 |
Locatelli, Igor | 24399 |
Grabnar, Iztok | 16107 |
Peternel, Polona | 02112 |
Stegnar, Mojca | 05034 |
Mrhar, Aleš | 06086 |
Breskvar, Katja | 03079 |
Dolžan, Vita | 11711 |
Source: Personal bibliographies
and: SICRIS
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