BRD2 and Infertility: After adjusting for female age, infertility year, basal serum FSH and AFC, there was a relationship between ovarian response and the delta FSH2 (3.91 < dif ≤ 5.69) (OR 0.81; 95% CI, 0.63–1.03) and delta FSH2 (dif > 5.69) (OR 1.17; 95% CI, 0.91–1.51) (Table 5).