Meta-analyses demonstrated that PCOS patients with a serum AMH level within the 75-100th percentile had a decreased odds of clinical pregnancy (OR: 0.77, 95% CI: 0.63–0.93) and livebirth (OR: 0.71; 95% CI: 0.58–0.87) compared to those within the 0-25th percentile. The gene discussed is AMH; the disease is polycystic ovary syndrome.