Endothelial Nitric Oxide Synthase Polymorphisms and Erectile Dysfunction: A Meta-Analysis

The result supports that G894T variant is associated with an increase in the risk of ED. No evidence for a significant association between 4VNTR and ED is observed. The results of the present meta-analysis should be interpreted with caution. Further confirmation in large and well-designed studies is needed. Wang J-L, Wang H-G, Gao H-Q, Zhai G-X, Chang P, and Chen Y-G. Endothelial nitric oxide synthase polymorphisms and erectile dysfunction: A meta-analysis.