BRD2 and polycystic ovary syndrome: As shown in Table 1, compared with the non-PCOS group, the PCOS group had significantly higher BMI(P = 0.002), LH(P<0.0001), LH/FSH(P<0.0001), FPG(P = 0.023), AMH(P<0.0001), the number of follicles obtained(P<0.0001), ICSI mature eggs(P = 0.014), and the number of normal fertilization (P = 0.003).