• PMID: 25532576
• Gene Name: GSTT1
• Condition: Idiopathic azoospermia, oligospermia
• Association: These results suggest an increased risk of the GSTP1 variant genotype (Ile/Val + Val/Val) for developing male factor infertility. The findings also underrate the significance of the effect of GSTM1 and/or GSTT1 (especially the former) in modulating the ri
• Mutation: GSTT1-null and GSTP1 (Ile/Val + Val/Val), GSTP1 variant genotype (Ile/Val + Val/Val)
• Population size: 723
• Population details: 723 (361 men with idiopathic azoospermia, 118 men with idiopathic oligospermia, 234 age-matched healthy fertile male controls)
• Sex: Male
• Infertility type: Male infertility
• Associated genes: GSTM1, GSTT1, and GSTP1
• Other associated phenotypes: Idiopathic azoospermia, oligospermia

Association of polymorphisms in glutathione S-transferase genes (GSTM1, GSTT1, GSTP1) with idiopathic azoospermia or oligospermia in Sichuan, China

Xiong DK, Chen HH, Ding XP, Zhang SH, Zhang JH.

The reported effects of the glutathione S-transferase (GSTs) genes (GSTM1, GSTT1, and GSTP1) on male factor infertility have been inconsistent and even contradictory. Here, we conducted a case-control study to investigate the association between functionally important polymorphisms in GST genes and idiopathic male infertility. The study group consisted of 361 men with idiopathic azoospermia, 118 men with idiopathic oligospermia, and 234 age-matched healthy fertile male controls. Genomic DNA was extracted from the peripheral blood, and analyzed by polymerase chain reaction and restriction fragment length polymorphism analysis. There was a significant association between the GSTP1 variant genotype (Ile/Val + Val/Val) with idiopathic infertility risk (odds ratio [OR]: 1.53; 95% confidence interval [CI]: 1.11-2.11; P = 0.009). Similarly, a higher risk of infertility was noted in individuals carrying a genotype combination of GSTT1-null and GSTP1 (Ile/Val + Val/Val) (OR: 2.17; 95% CI: 1.43-3.31; P = 0.0002). These results suggest an increased risk of the GSTP1 variant genotype (Ile/Val + Val/Val) for developing male factor infertility. Our findings also underrate the significance of the effect of GSTM1 and/or GSTT1 (especially the former) in modulating the risk of male infertility in males from Sichuan, Southwest China. FAU - Xiong, Da-Ke AU - Xiong DK FAU - Chen, Hong-Han AU - Chen HH FAU - Ding, Xian-Ping AU - Ding XP AD - Key Laboratory of Bio Resources and Eco-Environment, Ministry of Education, School of Life Science, Institute of Medical Genetics, Sichuan University; Bio-resource Research and Utilization Joint Key Laboratory of Sichuan and Chongqing, Chengdu; Biotechnology Academy of Nanchuan, Chongqing, China. FAU - Zhang, Shao-Hong AU - Zhang SH