BRD2 and polycystic ovary syndrome: Recent studies showed that a high basal LHlevel and/or a high LH/FSH ratio in women with PCOS had no significant impact on the numberof top-quality embryos, the clinical pregnancy rate (Sun et al., 2018; Singhet al., 2021; Fu andKuang, 2023; Liu and Wang, 2023), oreven the miscarriage rate (Sun etal., 2018; Fu and Kuang,2023).