PRM2 and Infertility: Screening for PRM1 and PRM2 variants by Tanaka et al. 20 in a large cohort of infertile Japanese patients led to the identification of eight novel SNPs (rs187174862, c.160C > A, rs145663132, rs737008, c.431A > G, c.248C > T, rs1646022, rs2070923), none of which caused amino acid changes.