Moreover, basal AMH, hCG-day E2 concentration, ΔE2, ΔP4, and basal FSH concentrations correlated with the number of oocytes retrieved in both the PCOS and non-PCOS subgroups, whereas the hCG-day SHBG concentration correlated positively with the number of oocytes retrieved only in the non-PCOS participants (Table 4). This evidence concerns the gene BRD2 and polycystic ovary syndrome.