ESR1 and polycystic ovary syndrome: The results indicated that the expression of decidualization-related proteins (ER, PR, and PRL) and endometrial receptivity markers (IGFBP were significantly lower in the PCOS group compared to the Control group, suggesting abnormal endometrial 1 and HOXA10) in the Dec-HD DHEA group was significantly lower compared to the Dec-Control groups (Fig. 8A and D, MD of ER, PR, PRL, IGFBP-1, and HOXA10 = 0.7063, 0.6490, 0.5518, 0.7828, 0.7776, all p < 0.0001).