Influence of GGCX genotype on warfarin dose requirements in Chinese patients.

Abstract:

INTRODUCTION:It has been widely accepted that genetic factors were the major sources of the variation in warfarin dose. This study is intended to investigate whether the 3261G>A variation in GGCX gene influences stable warfarin dose in Chinese patient population. MATERIALS AND METHODS:A total of 217 patients with stable warfarin dose were enrolled. Genomic DNA was extracted from each subject and the genotype of GGCX 3261G>A was determined by using of denaturing high-performance liquid chromatography (DHPLC). Least significant difference tests (LSDs) were used to compare dose with genotypes. Analysis of variance (ANVOA) was used to calculate the proportion of warfarin dose that could be explained by variation in genotype. RESULTS:In the total of 217 subjects, 84 patients (38.7%) were GG homozygote, whereas 117 (53.9%) were GA heterozygote and 16 (7.4%) were AA homozygote. Patients with the GGCX 3261AA genotype had a significantly higher average daily maintenance dose (3.39 ± 1.40 mg) than those with the GG genotype (2.69 ± 1.07 mg; P=0.027), and GGCX 3261G>A explains 2.3% of the univariate warfarin dose variance. CONCLUSION:GGCX 3261G>A may affect warfarin dose requirements, and showed a small but significant effect on warfarin dose in a Chinese patient population.

journal_name

Thromb Res

journal_title

Thrombosis research

authors

Huang SW,Xiang DK,Huang L,Chen BL,An BQ,Li GF,Luo ZY

doi

10.1016/j.thromres.2010.10.027

subject

Has Abstract

pub_date

2011-02-01 00:00:00

pages

131-4

issue

2

eissn

0049-3848

issn

1879-2472

pii

S0049-3848(10)00649-3

journal_volume

127

pub_type

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