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  • Title: Polymorphism in the RASGRF1 gene with high myopia: A meta-analysis.
    Author: Chen T, Shan G, Ma J, Zhong Y.
    Journal: Mol Vis; 2015; 21():1272-80. PubMed ID: 26644762.
    Abstract:
    PURPOSE: To evaluate the association between polymorphisms of RASGRF1 rs8027411 and high myopia in Chinese and Japanese populations. METHODS: All eligible studies investigating the association between the RASGRF1 gene and high myopia listed in PubMed, EMBASE, the Cochrane Library, Web of Science, and the China Biologic Medical Database were retrieved. The effects were assessed with the pooled odds ratio (OR) and 95% confidence interval (CI). Heterogeneity between studies was evaluated with the Q-statistic test. Publication bias was tested with Begg's and Egger's linear regression tests. Subgroup analysis and sensitivity analysis were performed to identify the sources of heterogeneity. RESULTS: In the present meta-analysis, 2,529 individuals with high myopia and 3,127 controls from four studies were included and divided into seven groups. The results indicated that RASGRF1 rs8027411 was significantly associated with high myopia in Chinese and Japanese populations. Carriers of the rs8027411 G allele had a lower risk of high myopia compared to carriers with the T allele (G versus T, OR=0.83, 95% CI=0.77-0.89; p<0.001). Low but not significant heterogeneity was found in a recessive model. No heterogeneity was found in other genetic models. The subgroup analysis indicated that the protective effect of rs8027411 variants was more prominent in Chinese populations (G versus T, OR=0.80 in Chinese and OR=0.86 in Japanese; GG versus TT, OR=0.65 in Chinese and OR=0.77 in Japanese; GT versus TT, OR=0.76 in Chinese and OR=0.81 in Japanese; (GG+GT) versus TT, OR=0.73 in Chinese and OR=0.80 in Japanese; and GG versus (GT+TT), OR=0.77 in Chinese and OR=0.87 in Japanese). Sensitivity analysis indicated that the study results were stable in allelic, homozygote, heterozygote, and dominant models but were not stable in the recessive model. No evidence of publication bias was found. CONCLUSIONS: Carriers of the rs8027411 G allele in the RASGRF1 gene may be at a lower risk of high myopia in Chinese and Japanese populations. The RASGRF1 gene may play a role in the development of high myopia, especially in Asians. Additional studies are required to validate these results.
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