MTR and polycystic ovary syndrome: This result is in agreement with one study available in the literature that analyzed 46 women with PCOS and 25 controls, in two ethnicities: Caucasian (25 PCOS and 16 controls) and South Asian (21 PCOS and 9 controls), and the relation of MTR A2756G polymorphism with the biochemical, hematological and endocrinological parameters and plasma levels of homocysteine (8).