BRD2 and polycystic ovary syndrome: As one of the most influential predictors, we have developed various online tools based on AMH, such as for the evaluation of ovarian reserve (http://121.43.113.123:9999/) (Xu et al., 2020b; Xu et al., 2020a), the screening of polycystic ovarian syndrome (PCOS) (http://121.43.113.123:8888/) (Xu et al., 2022; Xu et al., 2023b), predicting the FSH doses for ovarian stimulation (http://121.43.113.123:8004) (Xu et al., 2023a), and for predicting the number of oocyte retrieved (http://121.43.113.123:8002/) (Yong Han et al., 2022).