Pearce and colleagues, in their study investigated the association of AMH with vitamin D in 340 women (58 with PCOS and 282 ovulatory women) who aged below 40 yr; the results of this study reported no difference in the serum level of vitamin D between the two groups and indicated no association between AMH and vitamin D levels in neither groups (17). This evidence concerns the gene AMH and polycystic ovary syndrome.