GPT and obesity due to melanocortin 4 receptor deficiency: As obesity is a main phenotype in the PCOS population, we analyzed the body weights, reproductive organ weights and serum metabolic parameters (alanine aminotransferase, aspartate transaminase, total cholesterol, triglycerides, non-esterified fatty acids, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol and total ketone bodies).