BRD2 and Infertility: Exogenous preparations of FSH have long been used in the treatment of infertility, and can either be derived from purified human urine (u-FSH and human menopausal gonadotropin (hMG)) or produced as a recombinant product (r-hFSH), which is defined as a protein produced using DNA technology that utilizes biological processes to produce large-molecule drugs that cannot be synthesized using synthetic chemistry [3,4].