AMH is a well-known marker of ovarian reserve and has been proven to be positivelyassociated with ovarian response in controlled stimulation and, therefore, oocyteyield (Brodin et al., 2013).In PCOS the serum AMH levels are up to 5-fold higher than in normo-ovulatory women(Xi et al., 2012),mainly due to an increased in AMH production by each individual follicle rather thana higher number of follicles (Fanchin etal., 2005). This evidence concerns the gene AMH and polycystic ovary syndrome.