This nomogram, based on BMI, AMH level, initial FSH dosage, serum LH and P levels on the hCG trigger day, and endometrial thickness, can be used to predict the probability of a successful live birth in patients with PCOS undergoing fresh IVF with the GnRH-ant protocol and can be used by clinicians and patients in treatment decision-making. The gene discussed is BRD2; the disease is polycystic ovary syndrome.