Association between FVL G1691A, FII G20210A, and MTHFR C677T and A1298C polymorphisms and Turkish women with recurrent pregnancy loss.

Aim Recurrent pregnancy loss (RPL) poses a challenge in reproductive medicine because the etiology is often unknown. Here we investigated the frequency of mutations in the Factor V Leiden (FVL), prothrombin (FII), and methylene tetrahydrofolate reductase (MTHFR) genes in women with RPL and healthy women. Methods Blood samples were obtained from patients with ≥2 consecutive pregnancy losses and no identifiable etiology before 12 weeks of pregnancy (n=145).