Association between 12p13 Polymorphisms and Ischemic Stroke in Asian Populations: New Evidence from a Case-Control Study and a Meta-Analysis.

A genome-wide association study first reported the association between ischemic stroke risk and two polymorphisms on chromosome 12p13: rs12425791 and rs11833579. Since then, a series of studies have investigated the association of these two polymorphisms with stroke risk, but the results were inconsistent even in Asian populations. Thus, we carried out a case-control study to uncover the potential relationship, and then conducted a meta-analysis to further address the issue. 540 ischemic stroke patients and 540 unrelated controls were enrolled in the case-control study. Genotyping was accomplished by polymerase chain reaction-ligation detection reaction. The meta-analysis was conducted by combining our study with previous published data. In our case-control study, the significant association was observed between ischemic stroke and rs12425791 (AG vs. GG: OR = 1.32, P < 0.05) but not rs11833579. When pooled with previous studies, the significant relationship of rs12425791 with ischemic stroke was found (A vs. G: OR = 1.07, P < 0.05; AA + AG vs. GG: OR = 1.10, P < 0.05) in Asian populations, as well as in subgroup analysis. A correlation approaching significance was identified between ischemic stroke risk and rs11833579 (AA + AG vs. GG: OR = 1.06, P = 0.05). New evidence from this case-control study and meta-analysis indicates that 12p13 rs12425791/rs11833579 polymorphisms are associated with ischemic stroke susceptibility in Asian populations.