BRD2 and Infertility: Mean serum AMH did not differ among the unexplainedinfertility group, whereas we have observed a difference in mean serum FSH levels.This could be due to the fact that serum FSH issecreted from the anterior pituitary and depends onother factors such as serum estrogen while AMH issecreted directly from the preantral follicles (24).Women with unexplained infertility may thereforehave other factors responsible for elevated FSHlevels.