The SLC19A1 80G>A polymorphism is not associated with male infertility

Area of Science:

• Genetics
• Reproductive Biology
• Molecular Biology

Background:

• Genetic factors, such as methylenetetrahydrofolate reductase polymorphism, are implicated in male infertility.
• The SLC19A1 gene encodes the reduced folate carrier (RFC), a transmembrane protein crucial for folate transport.
• Common polymorphisms in genes involved in nutrient metabolism may influence reproductive health.

Purpose of the Study:

• To investigate the potential association between the SLC19A1 80G>A polymorphism (rs1051266:G>A) and male infertility.
• To determine if variations in the RFC gene affect male fertility outcomes.

Main Methods:

• A case-control study was conducted with 213 infertile Caucasian men and 226 ethnically matched controls.
• The SLC19A1 80G>A polymorphism was genotyped using polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP).
• Statistical analysis included calculating odds ratios (OR) with 95% confidence intervals (CI) for dominant and recessive genetic models, with and without age adjustment.

Main Results:

• Genotype distributions for the SLC19A1 80G>A polymorphism were comparable between infertile and fertile men.
• Odds ratios for both dominant (OR=0.90, 95% CI: 0.59-1.38) and recessive (OR=0.88, 95% CI: 0.56-1.36) models were non-significant.
• Age-adjusted analyses also showed no significant association (dominant OR=0.89, 95% CI: 0.57-1.37; recessive OR=0.80, 95% CI: 0.51-1.25).

Conclusions:

• The SLC19A1 80G>A polymorphism is not associated with male infertility in the studied Caucasian population.
• This finding suggests that variations in the reduced folate carrier gene at this specific locus do not play a significant role in the etiology of male infertility.
• Further research may explore other genetic factors or environmental influences on male fertility.