Abstract
Backgrounds and aims
The pathogenetic mechanism of Alzheimer’s disease (AD) is still unknown; however, gene polymorphism may play a critical role in the pathogenesis of AD. The aim of this meta-analysis was to evaluate the association between FAS gene A-670G polymorphism and AD.
Methods
We searched all related subjects in PubMed, Embase, Cochrane Library, SinoMed, and the China Knowledge Resource Integrated Database and identified seven studies reporting a relationship between the A-670G polymorphism in the FAS gene and AD.
Results
A total of 1512 cases and 1707 controls were included in the seven studies. The meta-analyses results suggested no significant association between the A-670G polymorphism and AD in any genetic models. When a subgroup analysis was conducted by ethnicity, the A-670G polymorphism was also not relevant to AD. However, when stratified by age, the GG genotype increased the risk of early-onset AD. We also found that the A-670G polymorphism was related to patients with AD who carried the apolipoprotein-E ε4 allele in three genetic models.
Conclusions
To sum up, our data suggested that the FAS gene A-670G polymorphism may not be associated with AD. When a subgroup analysis was conducted by ethnicity, the A-670G polymorphism was also not related with AD in Asian and Caucasian population. However, the FAS-670 GG genotype may increase the risk of AD in the younger population (age, ≤65 years). Furthermore, we found that the A-670G polymorphism was related to patients with AD who carried the APOE4 allele in dominant, allele and homozygous models.
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Abbreviations
- CI:
-
Confidence interval
- OR:
-
Odds ratio
- AD:
-
Alzheimer’s disease
- APOE4:
-
Apolipoprotein-E ε4
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Jinlong Zhu and Jianhua Su contributed equally to this study.
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Zhu, J., Su, J., Liu, R. et al. Relationship between the FAS gene A-670G polymorphism and Alzheimer’s disease: a meta-analysis. Aging Clin Exp Res 27, 563–571 (2015). https://doi.org/10.1007/s40520-015-0351-2
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DOI: https://doi.org/10.1007/s40520-015-0351-2