Follicle-stimulating hormone and human menopausal gonadotropin for ovarian stimulation in assisted reproduction cycles.

OBJECTIVES: To conduct a systematic overview of available data comparing FSH and hMG in IVF treatment cycles. SEARCH STRATEGY: This review has drawn on the search strategy developed for the Subfertility Group as a whole. Relevant trials were identified in the Group's Specialised Register of Controlled Trials. See Review Group details for more information. DATA COLLECTION AND ANALYSIS: A systematic review and meta-analysis of randomized trials of FSH versus hMG use in ovarian stimulation protocols, with or without GnRH agonists, in IVF treatment cycles. Common odds ratios (OR) were calculated after demonstrating homogeneity of treatment effect across all trials. MAIN OUTCOME MEASURES: Clinical pregnancy rates per cycle started, per cycle reaching oocyte retrieval, and per cycle reaching embryo transfer (ET). RESULTS: Eight trials met the inclusion criteria. The overall OR in favour of FSH for cycle start, oocyte retrieval, and ET were 1.70 (95% CI, 1.11-2.60), 1.68 (95% CI, 1.10-2.56), and 1.69 (95% CI, 1.10-2.59), respectively. REVIEWER'S CONCLUSIONS: This meta-analysis demonstrates that in IVF cycles the use of FSH is associated with a significantly higher clinical pregnancy rate than hMG.