In our cohort of NOW-PCOS, a significant positive correlation was found between BMI and serum leptin (R2 = 0,3838; r : 0.6195; p = 0.0181) and a positive, although nonsignificant, correlation was also observed between BMI and FF-leptin (R2 = 0, 2379, p = 0, `0553). Here, LEP is linked to polycystic ovary syndrome.