FGF17 is detected mainly in oocytes, but also in granulosa cells [33] and there is no literature directly addressing its role in PCOS or metabolism; however, in this study, it can be seen that it appears to be related to BMI as, when BMI was accounted for, it did not differ between women with and without PCOS. The gene discussed is FGF17; the disease is polycystic ovary syndrome.