Corifollitropin alfa: a new recombinant FSH gonadotropin analogue Nicolás Prados 1 Antonio Pellicer² Manuel Fernandez-Sanchez*¹ ¹IVI Sevilla Avda. República Argentina 58 41011 Sevilla, Spain ² IVI Valencia Plaza Policía Local, 3 46015 Valencia, Spain *Correspondence to: manuel.fernandez@ivi.es Summary Corifollitropin alfa (also referred originally as FSH-CTP and Org-36286) is a new artificial gonadotropin commercially available for women undergoing controlled ovarian follicle stimulation for in vitro fertilization (IVF) or intracitoplasmic sperm injection (ICSI) procedures. It is an artificial quimeric