Skip to content

Study · Randomized controlled trial · n = 106 · 2005

6 results

A lower ongoing pregnancy rate can be expected when GnRH agonist is used for triggering final oocyte maturation instead of HCG in patients undergoing IVF with GnRH antagonists.

Kolibianakis EM, Schultze-Mosgau A, Schroer A, van Steirteghem A, Devroey P, Diedrich K, Griesinger G

Human reproduction (Oxford, England)24 Jun 2005Cited by 230 (Europe PMC)

Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study6

6 results from studies that gave the peptide. 6 results from people.

  1. 01HumanRandomized controlled trialEfficacy outcome

    In IVF patients, triptorelin and HCG triggers produced no significant difference in retrieved cumulus-oocyte complexes.

    In plain wordsIn IVF patients, triptorelin and HCG triggers produced similar numbers of retrieved cumulus-oocyte complexes.

    Outcome
    No significant changeRetrieved cumulus-oocyte complexes
    Study

    n = 106

    Comparator
    Urinary HCG
    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    0.2 mgAs given in this study (human).

    Source sentences

    Summary
    No significant differences were present in the number of cumulus-oocyte complexes retrieved, in the proportion of metaphase II oocytes, in fertilization rates or in the number and quality of the embryos transferred between the two groups.
    3 context sentences
    Summary · context
    106 patients were randomized to receive either 10 000 IU urinary HCG or 0.2 mg Triptorelin for triggering final oocyte maturation.
    Summary · context
    Ovarian stimulation for IVF was performed with a fixed dose of 200 IU recombinant FSH and GnRH antagonist was started on stimulation day 6.
    Summary · context
    Luteal phase was supported with micronized vaginal progesterone and oral estradiol.
  2. 02HumanRandomized controlled trialEfficacy outcome

    In IVF patients, triptorelin and HCG triggers produced no significant difference in the proportion of metaphase II oocytes.

    In plain wordsIn IVF patients, triptorelin and HCG triggers produced similar proportions of mature oocytes.

    Outcome
    No significant changeMetaphase II oocyte proportion
    Study

    n = 106

    Comparator
    Urinary HCG
    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    0.2 mgAs given in this study (human).

    Source sentences

    Summary
    No significant differences were present in the number of cumulus-oocyte complexes retrieved, in the proportion of metaphase II oocytes, in fertilization rates or in the number and quality of the embryos transferred between the two groups.
    3 context sentences
    Summary · context
    106 patients were randomized to receive either 10 000 IU urinary HCG or 0.2 mg Triptorelin for triggering final oocyte maturation.
    Summary · context
    Ovarian stimulation for IVF was performed with a fixed dose of 200 IU recombinant FSH and GnRH antagonist was started on stimulation day 6.
    Summary · context
    Luteal phase was supported with micronized vaginal progesterone and oral estradiol.
  3. 03HumanRandomized controlled trialEfficacy outcome

    In IVF patients, triptorelin and HCG triggers produced no significant difference in fertilization rates.

    In plain wordsIn IVF patients, triptorelin and HCG triggers produced similar fertilization rates.

    Outcome
    No significant changeFertilization rate
    Study

    n = 106

    Comparator
    Urinary HCG
    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    0.2 mgAs given in this study (human).

    Source sentences

    Summary
    No significant differences were present in the number of cumulus-oocyte complexes retrieved, in the proportion of metaphase II oocytes, in fertilization rates or in the number and quality of the embryos transferred between the two groups.
    3 context sentences
    Summary · context
    106 patients were randomized to receive either 10 000 IU urinary HCG or 0.2 mg Triptorelin for triggering final oocyte maturation.
    Summary · context
    Ovarian stimulation for IVF was performed with a fixed dose of 200 IU recombinant FSH and GnRH antagonist was started on stimulation day 6.
    Summary · context
    Luteal phase was supported with micronized vaginal progesterone and oral estradiol.
  4. 04HumanRandomized controlled trialEfficacy outcome

    In IVF patients, triptorelin and HCG triggers produced no significant difference in the number of transferred embryos.

    In plain wordsIn IVF patients, triptorelin and HCG triggers produced similar numbers of transferred embryos.

    Outcome
    No significant changeNumber of transferred embryos
    Study

    n = 106

    Comparator
    Urinary HCG
    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    0.2 mgAs given in this study (human).

    Source sentences

    Summary
    No significant differences were present in the number of cumulus-oocyte complexes retrieved, in the proportion of metaphase II oocytes, in fertilization rates or in the number and quality of the embryos transferred between the two groups.
    3 context sentences
    Summary · context
    106 patients were randomized to receive either 10 000 IU urinary HCG or 0.2 mg Triptorelin for triggering final oocyte maturation.
    Summary · context
    Ovarian stimulation for IVF was performed with a fixed dose of 200 IU recombinant FSH and GnRH antagonist was started on stimulation day 6.
    Summary · context
    Luteal phase was supported with micronized vaginal progesterone and oral estradiol.
  5. 05HumanRandomized controlled trialEfficacy outcome

    In IVF patients, triptorelin and HCG triggers produced no significant difference in transferred embryo quality.

    In plain wordsIn IVF patients, triptorelin and HCG triggers produced similar transferred embryo quality.

    Outcome
    No significant changeQuality of transferred embryos
    Study

    n = 106

    Comparator
    Urinary HCG
    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    0.2 mgAs given in this study (human).

    Source sentences

    Summary
    No significant differences were present in the number of cumulus-oocyte complexes retrieved, in the proportion of metaphase II oocytes, in fertilization rates or in the number and quality of the embryos transferred between the two groups.
    3 context sentences
    Summary · context
    106 patients were randomized to receive either 10 000 IU urinary HCG or 0.2 mg Triptorelin for triggering final oocyte maturation.
    Summary · context
    Ovarian stimulation for IVF was performed with a fixed dose of 200 IU recombinant FSH and GnRH antagonist was started on stimulation day 6.
    Summary · context
    Luteal phase was supported with micronized vaginal progesterone and oral estradiol.
  6. 06HumanRandomized controlled trialEfficacy outcome

    In IVF patients, triptorelin triggering reduced ongoing pregnancy probability versus HCG, which prompted early trial discontinuation.

    In plain wordsIn IVF patients, triptorelin reduced ongoing pregnancy probability versus HCG, which prompted early trial discontinuation.

    Outcome
    DecreaseOngoing pregnancy probability
    Study

    n = 106

    Comparator
    Urinary HCG
    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    0.2 mgAs given in this study (human).

    Measurements

    Odds ratio
    0.11 ratio
    ongoing pregnancy versus HCG
    95% confidence interval
    0.02 to 0.52 ratio
    ongoing pregnancy odds ratio

    Source sentences

    Summary
    However, a significantly lower probability of ongoing pregnancy in the GnRH agonist arm prompted discontinuation of the trial, according to the stopping rules established (odds ratio 0.11; 95% confidence interval 0.02-0.52).
    3 context sentences
    Summary · context
    106 patients were randomized to receive either 10 000 IU urinary HCG or 0.2 mg Triptorelin for triggering final oocyte maturation.
    Summary · context
    Ovarian stimulation for IVF was performed with a fixed dose of 200 IU recombinant FSH and GnRH antagonist was started on stimulation day 6.
    Summary · context
    Luteal phase was supported with micronized vaginal progesterone and oral estradiol.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Registered trials1

Trials this study reports on, or that list this study as a reference. Registry data from ClinicalTrials.gov.

1 trial · source ClinicalTrials.gov (opens in a new tab)

Status unknownPhase 4NCT02715336

Efficacy and Safety of Medication Used to Stimulate Ovulation

Create Fertility Centern = 666Oct 2015 to est. Sept 2021

IVF Cycle · Ovarian Stimulation · Egg Retrieval · Pregnancy · Miscarriages · Ovarian Hyperstimulation

Trial pageClinicalTrials.govUpdated 20 Jul 2020

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    22 Oct 2026, 02:26 UTC

    Study results updated

  2. Version 1

    21 Oct 2026, 18:59 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

PepBank is a research reference. Talk to a doctor before you use any peptide.