Use of recombinant human follicle-stimulating hormone for in vitro fertilization-embryo transfer after severe systemic immunoglobulin E-mediated reaction to urofollitropin

OBJECTIVE: To report the successful use of recombinant human FSH in a patient with a history of a severe systemic immunoglobulin E (IgE)-mediated reaction to urofollitropin. SETTING: University hospital. PATIENT: A 38-year-old infertility patient who had experienced a whole-body rash with hives, tachycardia, fever, and other symptoms after urofollitropin administration, with confirmation of IgE-mediated sensitivity to urofollitropin by intradermal skin testing. INTERVENTION: In vitro fertilization-ET after the use of recombinant human FSH to stimulate ovarian follicular development. RESULTS: Establishment of a clinical pregnancy. CONCLUSIONS: Our case provides evidence for the involvement of nongonadotropin proteins as the direct cause of some adverse reactions from conventional urine-derived human FSH preparations.