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Ovarian response to recombinant human follicle-stimulating hormone: a randomized, antimüllerian hormone-stratified, dose-response trial in women undergoing in vitro fertilization/intracytoplasmic sperm injection

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  • Joan-Carles Arce
  • Anders Nyboe Andersen
  • Manuel Fernández-Sánchez
  • Hana Visnova
  • Ernesto Bosch
  • Juan Antonio García-Velasco
  • Pedro Barri
  • Petra de Sutter
  • Bjarke M Klein
  • Bart C J M Fauser
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OBJECTIVE: To evaluate the dose-response relationship of a novel recombinant human FSH (rhFSH; FE 999049) with respect to ovarian response in patients undergoing IVF/intracytoplasmic sperm injection treatment; and prospectively study the influence of initial antimüllerian hormone (AMH) concentrations.

DESIGN: Randomized, controlled, assessor-blinded, AMH-stratified (low: 5.0-14.9 pmol/L [0.7-<2.1 ng/mL]; high: 15.0-44.9 pmol/L [2.1-6.3 ng/mL]) trial.

SETTING: Seven infertility centers in four countries.

PATIENT(S): Two hundred sixty-five women aged ≤37 years.

INTERVENTION(S): Controlled ovarian stimulation with either 5.2, 6.9, 8.6, 10.3, or 12.1 μg of rhFSH, or 11 μg (150 IU) of follitropin alfa in a GnRH antagonist cycle.

MAIN OUTCOME MEASURE(S): Number of oocytes retrieved.

RESULT(S): The number of oocytes retrieved increased in an rhFSH dose-dependent manner, from 5.2 ± 3.3 oocytes with 5.2 μg/d to 12.2 ± 5.9 with 12.1 μg/d. The slopes of the rhFSH dose-response curves differed significantly between the two AMH strata, demonstrating that a 10% increase in dose resulted in 0.5 (95% confidence interval 0.2-0.7) and 1.0 (95% confidence interval 0.7-1.3) more oocytes in the low and high AMH stratum, respectively. Fertilization rate and blastocyst/oocyte ratio decreased significantly with increasing rhFSH doses in both AMH strata. No linear relationship was observed between rhFSH dose and number of blastocysts overall or by AMH strata. Five cases of ovarian hyperstimulation syndrome were reported for the three highest rhFSH doses and in the high AMH stratum.

CONCLUSION(S): Increasing rhFSH doses results in a linear increase in number of oocytes retrieved in an AMH-dependent manner. The availability of blastocysts is less influenced by the rhFSH dose and AMH level.

CLINICAL TRIAL REGISTRATION NUMBER: NCT01426386.

Original languageEnglish
JournalFertility and Sterility
Volume102
Issue number6
Pages (from-to)1633-40.e5
ISSN0015-0282
DOIs
Publication statusPublished - Dec 2014

ID: 44889010