Similarly, a recent retrospective cohort study with patients with PCOS who had undergone IVF/ICSI showed that for patients with a BMI ≥ 24 kg/m (2) plus serum AMH > 6.45 ng/ml (75th percentile), the risk of preterm birth was 2.1 times that in the AMH <2.71 ng/ml group (55).Associations with other maternal and perinatal outcomes remain uncertain. Here, AMH is linked to polycystic ovary syndrome.