SULT2A1 and polycystic ovary syndrome: When a correlation analysis was conducted for the PCOS group, negative correlations were found between BMI and DHEAS (r = −0.110, P = 0.001), 17-OHP (r = −0.10, P < 0.001), P (r = −0.075, P = 0.023) and E1 (r = −0.104, P < 0.001) (see Supplementary Table. S2).