Genetic determinants of warfarin maintenance dose and time in therapeutic treatment range: a RE-LY genomics substudy

Author:

Eriksson Niclas1,Wallentin Lars1,Berglund Lars1,Axelsson Tomas2,Connolly Stuart3,Eikelboom John3,Ezekowitz Michael4,Oldgren Jonas1,Paré Guillaume3,Reilly Paul5,Siegbahn Agneta2,Syvanen Ann-Christine2,Wadelius Claes6,Yusuf Salim3,Wadelius Mia2

Affiliation:

1. Uppsala Clinical Research Center & Department of Medical Sciences, Uppsala University, Uppsala, Sweden

2. Department Medical Sciences & Science for Life Laboratory, Uppsala University, Uppsala, Sweden

3. Population Health Research Institute, Hamilton Health Sciences & McMaster University, Hamilton, ON, Canada

4. Sidney Kimmel Medical Collage at Thomas Jefferson University, Philadelphia, PA, USA

5. Boehringer Ingelheim Pharma Inc, Ridgefield, CT, USA

6. Department of Immunology, Genetics & Pathology & Science for Life Laboratory, Uppsala University, Uppsala, Sweden

Abstract

Aims: We investigated associations between genetic variation in candidate genes and on a genome-wide scale with warfarin maintenance dose, time in therapeutic range (TTR), and risk of major bleeding. Materials & methods: In total, 982 warfarin-treated patients from the RE-LY trial were studied. Results: After adjusting for SNPs in VKORC1 and CYP2C9, SNPs in DDHD1 (rs17126068) and NEDD4 (rs2288344) were associated with dose. Adding these SNPs and CYP4F2 (rs2108622) to a base model increased R2 by 2.9%. An SNP in ASPH (rs4379440) was associated with TTR (-6.8% per minor allele). VKORC1 was associated with time less than INR 2.0. VKORC1 and CYP2C9 were associated with time more than INR 3.0, but not with major bleeding. Conclusions: We identified two novel genes associated with warfarin maintenance dose and one gene associated with TTR. These genes need to be replicated in an independent cohort.

Publisher

Future Medicine Ltd

Subject

Pharmacology,Genetics,Molecular Medicine

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4. American Heart Association/American College of Cardiology Foundation guide to warfarin therapy11The American Heart Association makes every effort to avoid any actual or potential conflicts of interest that may arise as a result of an outside relationship or a personal, professional, or business interest of a member of the writing panel. Specifically, all members of the writing group are required to complete and submit a Disclosure Questionnaire showing all such relationships that might be perceived as real or potential conflicts of interest.This statement has been co-published in the April 1, 2003, issue of Circulation.This statement was approved by the American Heart Association Science Advisory and Coordinating Committee in October 2002 and by the American College of Cardiology Board of Trustees in February 2003. A single reprint is available by calling 800-242-8721 (US only) or writing the American Heart Association, Public Information, 7272 Greenville Ave, Dallas, TX 75231-4596. Ask for reprint No. 71-0254. To purchase additional reprints: up to 999 copies, call 800-611-6083 (US only) or fax 413-665-2671; 1000 or more copies, call 410-528-4426, fax 410-528-4264, or e-mail klbradle@lww.com. To make photocopies for personal or educational use, call the Copyright Clearance Center, 978-750-8400.

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