2019
DOI: 10.1002/cpt.1323
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Effect of CYP4F2,VKORC1, and CYP2C9 in Influencing Coumarin Dose: A Single‐Patient Data Meta‐Analysis in More Than 15,000 Individuals

Abstract: The cytochrome P450 (CYP)4F2 gene is known to influence mean coumarin dose. The aim of the present study was to undertake a meta-analysis at the individual patients level to capture the possible effect of ethnicity, gene-gene interaction, or other drugs on the association and to verify if inclusion of CYP4F2*3 variant into dosing algorithms improves the prediction of mean coumarin dose. We asked the authors of our previous meta-analysis (30 articles) and of 38 new articles retrieved by a systematic review to s… Show more

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Cited by 27 publications
(15 citation statements)
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“…The contribution of clinical molecular biology in the evaluation and prevention of cardiological risk, in particular sudden cardiac death, and in the therapeutic approach [ 178 ], both in patients and in healthy subjects and athletes, is an important goal that involves many areas of the medical profession [ 179 , 180 , 181 , 182 , 183 ].…”
Section: Discussionmentioning
confidence: 99%
“…The contribution of clinical molecular biology in the evaluation and prevention of cardiological risk, in particular sudden cardiac death, and in the therapeutic approach [ 178 ], both in patients and in healthy subjects and athletes, is an important goal that involves many areas of the medical profession [ 179 , 180 , 181 , 182 , 183 ].…”
Section: Discussionmentioning
confidence: 99%
“…Despite the contribution of pharmacogenetic algorithms to explain the variability in the dosing of coumarin drugs, doubts remain about their applicability in routine clinical practice. Several clinical trials and metanalyses have been published to date on warfarin but with inconclusive results [25][26][27][28][29][30]. In the case of acenocoumarol, the results of the only two available clinical trials on acenocoumarol are also inconclusive.…”
Section: Discussionmentioning
confidence: 99%
“…A number of meta-analyses have been published showing that genotype-guided dosing improves the percentage of time within the therapeutic INR range [24][25][26], although the usefulness of the pharmacogenetics in reducing bleeding complications is a subject of debate [24,[26][27][28]. To date, there have been only two published clinical trials on acenocoumarol evaluating two different pharmacogenetic algorithms, with conflicting results [22,23], and a few meta-analyses within the context of studies assessing the effect of including genetic variables in the dosing of coumarins [25,[28][29][30]. Most of these studies (with both warfarin and acenocoumarol) included a mixed population.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, a meta-analysis has been published [104] including 15,754 patients. The CYP4F2 *3 polymorphism was consistently associated with an increase in mean coumarin dose (+9% (95% CI 7–10%), with a larger effect in females, in patients taking acenocoumarol, and in Europeans.…”
Section: The Most Relevant Evidence In Pharmacogenetics Of Drugs Umentioning
confidence: 99%
“…The inclusion of the CYP4F2 *3 in dosing algorithms slightly improved the prediction of stable coumarin dose. New pharmacogenetic equations potentially useful for clinical practice were derived [104].…”
Section: The Most Relevant Evidence In Pharmacogenetics Of Drugs Umentioning
confidence: 99%