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Previous studies have proposed the association between catechol-o-methyltransferase (COMT) Val158Met polymorphism and the risk of Alzheimer's disease (AD). However, there has been no solid conclusion from those reports because of the limited sample size and/or racial diversity. Here we aimed to give an in-depth and accurate evaluation of this association by performing a comprehensive literature search...
There were conflicting results about whether promoter polymorphisms (−2578C/A, −1154G/A) of vascular endothelial growth factor (VEGF) gene is a risk factor of Alzheimer's disease (AD). To determine the relationship between them, a meta-analysis is needed urgently. We searched all the reports about VEGF promoter polymorphisms (−2578C/A, −1154G/A) and AD risk from PubMed, Web of Science, Cochrane Collaboration...
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