[The association study between Eppin gene polymorphisms and idiopathic male infertility]

Area of Science:

• Genetics
• Reproductive Medicine
• Human Population Studies

Background:

• Idiopathic male infertility affects a significant portion of the male population, impacting reproductive health.
• The Eppin gene plays a role in sperm function and male fertility, making it a candidate for genetic association studies.
• Understanding the genetic underpinnings of male infertility is crucial for developing diagnostic and therapeutic strategies.

Purpose of the Study:

• To investigate the association between specific single nucleotide polymorphisms (tagSNPs) in the Eppin gene and the risk of idiopathic male infertility.
• To analyze the correlation of four tagSNPs (rs6124715, rs2231829, rs2227290, and rs11594) within the Eppin gene with male infertility in the Chinese Han population.

Main Methods:

• A case-control study involving 473 infertile males and 198 fertile male controls from the Chinese Han population.
• Genotyping of four Eppin gene tagSNPs (rs6124715, rs2231829, rs2227290, rs11594) was performed using the PCR-restriction fragment length polymorphism (PCR-RFLP) method.
• Serum testosterone levels were assessed using radioimmunoassay (RIA).

Main Results:

• A statistically significant difference in genotype frequencies was observed at rs11594 (P = 0.021).
• Carriers of the CC genotype at rs11594 showed a significantly increased risk of male infertility (Odds Ratio = 7.02).
• No significant association was found between rs6124715, rs2231829, rs2227290 genotypes and the risk of male infertility.

Conclusions:

• Polymorphisms in the Eppin gene are associated with susceptibility to idiopathic male infertility.
• The CC genotype at the rs11594 locus within the Eppin gene is identified as a risk factor for idiopathic male infertility.
• Further research into Eppin gene variants could provide insights into the genetic etiology of male infertility.