MMP3 -1171 5A/6A Promoter Genotype Influences Serum MMP3 Levels and Is Associated with Deep Venous Thrombosis

Background The aim of this study was to investigate the roles of MMP3 (matrix metalloproteinase-3) gene polymorphism and protein expression in deep venous thrombosis (DVT) among Chinese Han population. Methods A total of 280 subjects were included in this study and categorized as case group (144 DVT patients) and control group (136 healthy individuals). Polymerase chain reaction-restriction fragment length polymorphism was used to detect MMP3 promoter -1171 5A>6A genotype and allele frequencies. MMP3 serum levels were measured by enzyme-linked immunosorbent assay. SPSS version 18.0 statistical software was used for data analysis. Results There was significant difference in genotype frequencies of MMP3 gene -1171 5A>6A between the case group and the control group (all P 6A may be associated with increased risk of DVT (odds ratio 1.961, 95% confidence interval 1.309–2.939, P