Significant differences were found between the two groups in maternal age (30.0 vs. 36.0), body mass index (BMI) (23.2 vs. 24.1), infertility duration (3 vs. 4), the proportion of secondary infertility (46.7% vs. 73.8%), AFC levels (14 vs. 22), and AMH levels (12.7 vs. 37.3), basal FSH levels (7.2 vs. 6.2), and initial dose of Gn (225.0 vs. 200.0) (P < 0.05). This evidence concerns the gene BRD2 and Infertility.