PCOS: Polycystic ovary syndrome, AFC: Antral follicle count, AMH: Anti-Mullerian hormone, MII: Metaphase II, I: Intervention group, P: Placebo group, NR: Not reported, NA: Not applicable, IVF: In vitro fertilization, ICSI: Intracytoplasmic sperm injection. This evidence concerns the gene AMH and polycystic ovary syndrome.