BRD2 and Infertility: Among many models constructed, the model with the highest predictive value of cumulative pregnancy is the model constructed by AFC level, basal FSH level, and infertility duration, and the AUC is 0.629(0.592-0.666), while the highest predictive value of cumulative live birth is the model constructed by maternal age, AFC level, basal FSH level, infertility duration and type of infertility, and its AUC is 0.649(0.615-0.682).