BRD2 and Infertility: Univariate binary logistic regression analysis showed that age, BMI and P/O ratio were negatively correlated with live births (P<0.05), but AFC, the AMH level, the LH level and endometrial thickness on hCG injection day, the number of oocytes retrieved and available embryo number were positively correlated with live births (P<0.05), the basic FSH level, infertility factors, primary infertility, E2 on hCG injection day, the dosage of Gn, duration of Gn and ICSI were not significantly correlated with live births (P>0.05) (Supplementary Table 1).