SESN2 and polycystic ovary syndrome: A statistically significant difference was found between serum sestrin 2 values of the women in the obese PCOS (6.42 ± 4.05 ng/mL), nonobese PCOS (8.19 ± 4.94 ng/mL) and control groups (15.18 ± 10.91 ng/mL) (p = 0.0001).