Patients with PCOS were further divided into 3 groups according to the 25th and 75th percentile of the serum AMH level: AMH ≤ 4.91 ng/mL (n = 106), AMH between 4.91 and 10.88 ng/mL (n = 208) and AMH > 10.88 ng/mL (n = 104). This evidence concerns the gene AMH and polycystic ovary syndrome.