Relationship between PPAR‐γ gene polymorphisms and ischemic stroke risk: A meta‐analysis

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Abstract
Background: Published researches have suggested some associations between PPAR‐γ and ischemic stroke (IS) development. This meta‐analysis was conducted to evaluate the association between PPAR‐γ gene polymorphisms and IS risk.Materials and methods: A systematic search was conducted in PubMed, Embase, Web of Science, China National Knowledge Infrastructure, and WanFang databases. The pooled association of odd ratios (ORs) and its 95% confidence interval (CI) was calculated to assess the IS risk of PPAR‐γ rs1801282 C/G and rs3856806 C/T polymorphisms. Furthermore, the heterogeneity test, cumulative analyses, sensitivity analyses, and publication bias were conducted.Result: Sixteen publications with 3786 cases and 5343 controls were identified. Overall findings indicated that rs1801282 C/G polymorphism may be associated with an increased risk for IS (GG vs. CC: OR = 2.17 95%CI = 1.09–4.35, p = .03, I2 = 0%; GG vs. CC+CG: OR = 2.15, 95%CI = 1.07–4.32, p = .03, I2 = 0%). The similar results were also found in the subgroup analysis. In addition, no significant association was observed between rs3856806 C/T polymorphism and IS risk.Conclusion: In conclusion, our study showed that PPAR‐γ rs1801282 C/G polymorphism probably plays an important role in IS occurrence. The result should be verified with more studies in the future.

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