The infertility duration, number of pregnancies, body mass index (BMI), basal follicle-forming hormone (bFSH), estradiol (E2) on the trigger day, number of oocytes retrieved, and the level of two embryos transferred were significantly higher in the younger (≤ 32 years) than in the older group (> 32 years), respectively (Table 1). This evidence concerns the gene FSHB and Infertility.