PRM1 and male infertility: For PRM1 rs2301365 polymorphism, the C allele and CA genotype in the studies with PCR-based method were associated with the elevated risk of male infertility (OR 1.96; 95% CI 1.29, 2.97; P = 0.002 and OR 1.79; 95% CI 1.13, 2.83; P = 0.01, respectively).