BRD2 and endometriosis: (1) Fresh transfer cycles(2) Female aged >40 years(3) Basal FSH level ≥10 IU/L(4) Endometriosis grade 3 or higher; history of ovarian surgery; uterine anomalies(5) History of recurrent spontaneous abortion(6) Abnormal chromosomal karyotype(7) Fetal reduction in the first FETcycles(8) Lost to follow-up