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    Stroke. 2001 Dec 1;32(12):2759-61.

    Role of factor XIII Val34Leu polymorphism in retinal artery occlusion.

    Weger M, Renner W, Stanger O, Schmut O, Deutschmann H, Wascher TC, Haas A.

    Source

    Department of Ophthalmology, Auenbruggerplatz 4, A-80365 Graz, Austria. martin.weger@kfunigraz.ac.at

    Abstract

    BACKGROUND AND PURPOSE:

    Factor XIII (FXIII) Val34Leu, a common polymorphism in the gene for factor XIII, has been associated with a lower risk of stroke, myocardial infarction, and deep vein thrombosis. Ineffective fibrin cross-linking has been suggested to be causative. The aim of the present case-control study was to investigate the role of FXIII Val34Leu polymorphism in patients with retinal artery occlusion.

    METHODS:

    A total of 108 patients with retinal artery occlusion and 313 age- and sex-matched controls were genotyped for the FXIII Val34Leu polymorphism. Factor XIII Val34Leu genotypes were determined by use of allele-specific polymerase chain reaction.

    RESULTS:

    Homozygous Leu genotype was found significantly more often in control subjects than in patients with retinal artery occlusion (P=0.018), with an odds ratio of 0.22 (95% confidence interval 0.07 to 0.74). Distribution of the Val/Val and Val/Leu genotypes did not differ significantly between groups.

    CONCLUSIONS:

    Because prevalence of homozygous Leu genotype was significantly higher in controls, we conclude that the Leu/Leu genotype is associated with a protective effect against retinal artery occlusion.

    PMID:
    11739969
    [PubMed - indexed for MEDLINE]
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