RARRES2 and polycystic ovary syndrome: In a subgroup analysis according to BMI >25 or <25 kg/m2, women with PCOS and BMI >25 kg/m2 revealed significantly higher serum chemerin levels in comparison with the non‐PCOS group with BMI >25 kg/m2; (WMD: 3.96 pg/ml, 95% CI: 3.02, 4.9, p < .001).