ABSTRACT
The need for simplified in-vitro fertilization (IVF) treatment approaches with the aim of reducing treatment burden and to prevent drop-outs after a failed IVF cycle can be met by the use of corifollitropin alfa for COS in association with a GnRH antagonist protocol. This is a report of the first local case of a successful pregnancy using corifollitropin alfa in IVF. This is a case of a 33 year-old G3 PO (0030) whose partner has teratozoospermia. COS using corifollitropin alfa yielded eight mature oocytes with no occurrence of OHSS. Six oocytes were fertilized using ICSI with six good quality embryos reaching cleavage stage. Two grade 1 embryos at day 3 cleavage stage were transferred. A clinical pregnancy was documented at 7 weeks age of gestation. Congenital anomaly scanning at 24 weeks age of gestation revealed a grossly normal fetus. Patient delivered a healthy, live, term baby boy. Review of literature suggests that corifollitropin alfa is as effective as rFSH in delivering live birth rate, ongoing pregnancy rate and clinical pregnancy rate. The sustained and higher FSH immunoreactivity concentrations and the inability for dose adjustment after treatment with a single dose of corifollitropin compared with the daily rFSH regimen underscores the need for careful patient selection in the use of corifollitropin alfa.