These characteristics included age (33.3 ± 3.67 vs. 33.1 ± 3.78, p = 0.536), BMI (22.8 ± 2.79 vs. 22.4 ± 2.98, p = 0.172), duration of infertility (3.48 ± 2.26 vs. 3.88 ± 2.68, p = 0.097), primary infertility (54.0% vs. 58.4%, p = 0.349), basal FSH (7.26 ± 2.78 vs. 7.26 ± 2.22, p = 0.992), total dosage of Gn used (2651.9 ± 841.1 vs. 2639.0 ± 864.6, p = 0.874), duration of stimulation (11.6 ± 2.04 vs. 11.6 ± 2.28, p = 0.890), and the number of embryos transferred (1: 16.8% vs. 16.8%; 2: 83.2% vs. 83.2%; p = 0.998). The gene discussed is BRD2; the disease is Infertility.