BRD2 and Azoospermia: What we achieved in our study was that when inhibin-B is more than 150 pg/mL and FSH is less than twice the normal, the success rate of biopsy and sperm detection will be high, but these values didn’t differentiate obstructive azoospermia from others, especially from Incomplete SMA, because the hormonal changes in the obstructive azoospermia and Incomplete SMA are similar.