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  • Title: Influence of fibrinogen beta-chain gene variations on risk of myocardial infarction in a Chinese Han population.
    Author: Lu XF, Yu HJ, Zhou XY, Wang LY, Huang JF, Gu DF.
    Journal: Chin Med J (Engl); 2008 Aug 20; 121(16):1549-53. PubMed ID: 18982866.
    Abstract:
    BACKGROUND: Although the role of fibrinogen as a predictor of acute myocardial infarction (MI) has been well-established, the association of genetic polymorphisms in the fibrinogen gene with MI is still controversial. This study was conducted to elucidate the association between the genetic polymorphisms of the fibrinogen beta-chain (FGB) gene and MI in Chinese Han population. METHODS: The occurrence of 3 common polymorphisms (i.e., -455G/A, R448K and 8558C/G) in a case-control study including 508 patients with MI and 503 healthy controls was investigated. Results Analyses of single polymorphisms showed that individuals carrying the rare alleles for the 3 polymorphisms were significantly associated with a decreased risk of MI. Logistic regression analysis indicated that R448K remained independently associated with MI after adjustment for environmental risk factors (adjusted odds ratio(OR) = 0.71 for KK/RK versus RR, P = 0.023). The three polymorphisms were found to be in strong linkage disequilibrium. Haplotype analyses showed that the A-K-G haplotype (-455A, 448K, 8558G) was associated with a protective effect against MI. Compared with the common haplotype G-R-C, the adjusted OR for A-K-G was 0.68 (95% CI, 0.51-0.90; P = 0.006). CONCLUSION: These data indicate that individuals carrying the FGB 448K allele may be protective against having MI in this population.
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