Comparison of urinary VDBP levels of the three groups of samples showed the highest levels in the PCOS group, median levels in the NC group, and the lowest levels in the DOR group (115.90 ± 26.02 ng/ml, 81.86 ± 23.92 and 52.84 ± 21.37, respectively; P < 0.05) (Fig. 5). The gene discussed is GC; the disease is polycystic ovary syndrome.