BRD2 and polycystic ovary syndrome: Jarrett et al. (2020), however, observed that FSH was significantly lower in women with PCOS and sporadic ovulation than in controls, although only during the luteal phase, but was similar between women with anovulatory PCOS and controls across both the luteal and follicular phases. Two studies (Schmidt et al., 2011a; Forslund et al., 2021) showed similar changes in FSH from baseline in women with and without PCOS. Finally, Ng et al. (2019) observed a significant increase in FSH from baseline in women with PCOS; data in women without PCOS was not reported.