Treatment of subfertility and infertility by assisted reproduction technologies (ART) such as in-vitro fertilisation (IVF) and embryo transfer (ET) requires multiple follicular development to increase the number of female gametes, and the chances of a successful treatment outcome. Ovarian stimulation in IVF/intracytoplasmic sperm injection (ICSI) currently includes suppression of endogenous luteinizing hormone (LH) secretion by administration of a gonadotrophin releasing hormone (GnRH) agonist, followed by stimulation of multiple follicular development by exogenous FSH administration. When adequate follicular development is achieved, a single dose of u-hCG (urinary-hCG) is administered to mimic the endogenous LH surge and induce final oocyte maturation. Recombinant-human FSH (r-hFSH) has been shown to be superior to u-hFSH in terms of requiring fewer ampules and more efficacious in terms of number of oocytes recovered and in terms of pregnancy rates.~Recently, a new formulation of follitropin alfa has been developed due to a general trend in the field of therapeutic recombinant proteins to move from presentations based on biological activity to presentations based on physico-chemical characteristics. Until now follitropin alfa has been produced as a powder for injection (either as monodose or multidose preparations) in glass ampoules or in glass vials and administered using plastic or glass syringe. Serono developed a multidose solution for injection in a prefilled disposable injection pen. This study involved comparing the administration of follitropin alfa liquid formulation applied by pen with that of follitropin beta liquid formulation also applied by pen.~OBJECTIVES The objectives of this study were to evaluate the convenience, safety and efficacy of Follitropin alfa (Gonal-f) liquid pen compared with Follitropin beta (Puregon) liquid pen.
This was a prospective, randomised, open comparative monocentric phase IIIb study to evaluate the convenience, safety and efficacy of follitropin alfa (Gonal-f) liquid pen compared with follitropin beta (Puregon) liquid pen.