As a biomarker of lipolysis, serum glycerol levels are decreased in normal-weight PCOS women with normal insulin sensitivity [42], yet increased in overweight PCOS women [44], likely because androgen-induced catecholamine lipolytic resistance in normal-weight PCOS women [43] is antagonized by impaired insulin suppression of lipolysis in overweight PCOS women [44]. The gene discussed is INS; the disease is polycystic ovary syndrome.