aOR for the C allele versus T allele showed that the T allele of the MMP-9 gene added a 10.71-fold risk (aOR = 10.71; 95% CI: 5.65, 21.09; P < 0.001) for the development of ischaemic stroke in our population (Table 4, Figure 1). Here, MMP9 is linked to ischemic stroke.