BRD2 and Infertility: As shown in Table 4, the average age, BMI, infertility duration, AMH level, FSH level, infertility factors, number of previous failed cycles, high-quality embryo rate and endometrial thickness in the sequential transfer of the D5 blastocyst group and conventional transfer of the D5 blastocyst group were not significantly different (P > 0.05).