Effectiveness of highly purified human menopausal gonadotropin vs. recombinant follicle-stimulating hormone in first-cycle in vitro fertilization-intracytoplasmic sperm injection patients

Objective: To compare the effectiveness of highly purified hMG with n combinant FSH (rFSH) in IVF-intracytoplasmic sperm injection patients who were treated with a GnRH agonist. Design: An open-label, prospective randomized comparison of fixed gonadotropin regimens. Setting: Eighteen Dutch IVF centers. Patient(s): Six hundred twenty-nine patients who were selected for IN F-intracytoplasmic sperm injection. Intervention(s): Patients were randomized to receive either highly purified hMG or rFSH in a fixed dosage of 150 IU/d after GnRH-agonist, suppression (long protocol). Main Outcome Measure(s): Ongoing pregnancy rate per started cycle. Difference between the two treatment groups was tested by using odds ratios, including the 95% confidence limits (intention-to-treat sample), and by using the Fisher's exact test (per-protocol sample). Result(s): The ongoing pregnancy rates per started cycle were 26.3% and 25.2% for highly purified hMG and rFSH, respectively (no statistically significant difference). Treatment with highly purified hMG resulted in statistically significantly fewer oocytes (n = 7.8) than did treatment with rFSH (n = 10.6). There were no differences with respect to fertilization rates and implantation rates. Cycles with highly purified hMG were statistically significantly less often canceled as a result of ovarian hyperresponse (2.0% vs. 6.0% for highly purified hMG and rFSH, respectively). Conclusion(s): Compared with rFSH, highly purified hMG did not result in superiority in ongoing pregnancy rates in first-cycle IVF-intracytoplasmic sperm injection patients who were treated with a fixed dosage of 150 IU of gonadotropin per day. Compared with rFSH, treatment with highly purified hMG resulted in retrieval of fewer oocytes, a lower incidence of hyperresponse, and comparable pregnancy rates. (Fertil Steril (R) 2008;89:1685-93. (c) 2008 by American Society for Reproductive Medicine.)