This study was designed to investigate the association between null polymorphisms of glutathione S-transferase (GST) M1 and T1 genes and idiopathic male infertility in a Russian population including 203 infertile and 227 fertile men.
To examine glutathione S-transferase M1 (GST M1) gene polymorphism and male infertility in Taiwanese patients with varicocele, 80 young male patients with varicocele (group 1), 62 young male patients with subclinical varicocele (group 2) and 60 normal young males (group 3) were recruited in this study.