ANGPTL2 and polycystic ovary syndrome: It was found that miR-124-3p expression levels were significantly downregulated in the serum of PCOS-obese patients compared to those in the control-obese group; serum miR-124-3p levels were further decreased, and ANGPTL2 levels were elevated in the PCOS-nonobese group compared with those in the control-nonobese group; serum miR-124-3p levels were lower and ANGPTL2 levels were higher in the PCOS-obese group relative to those in the PCOS-nonobese group (Figures 1(a)–1(c), P < 0.01).