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Objective To investigate whether coagulation factor Ⅶ (FⅦ) polymorphisms play a role in the pathogenesis of coronary artery disease (CAD) and/or myocardial infarction (MI) in a series of Hans.Methods The Arg353Gln and HVR4 polymorphisms of FⅦ gene were determined in 374 patients undergoing selective coronary angiography by PCR and restriction fragment length polymorphism assay.Results The FⅦ genotype distribution was in accordance with Hardy-Weinberg equilibrium. The frequencies of FⅦ genotypes or alleles did not show significant differences between the CAD group and the controls or between the males and the females. The frequencies of carriers of the Gln353 allele and (Arg/Gln+Gln/Gln) genotypes were significantly higher in the CAD patients without MI than in those with MI (P=0.031, odds ratio 0.37, 95% CI: 0.15-0.94). However, HVR4 polymorphisms were not significantly different between the two groups (P>0.05).Conclusion Carrying the F Ⅶ Gln353 gene may be a protective factor against MI in the Chinese Hans.