Moreover, there were some strengths in the present meta‐analysis in comparison with the recent meta‐analysis conducted by Lin et al.20In the present study, serum chemerin levels were compared between (a) PCOS and non‐PCOS regardless/regard of BMI (obese/ normal weight) and (b) PCOS women with obesity and normal weight. This evidence concerns the gene RARRES2 and obesity due to melanocortin 4 receptor deficiency.