hCGPhase 2/316mmNCT01390207
Earlier Triggering in Rec-FSH/GnRH Antagonist Cycles
A Phase 2/3 study testing 16mm triggering in people with hCG, run by Universitair Ziekenhuis Brussel.
Trial summary
The effect of altering the timing of hCG administration on the ongoing pregnancy rate in patients stimulated with recombinant-FSH (rec-FSH)/gonadotrophin releasing hormone (GnRH) antagonists for in vitro fertilisation (IVF). Read more about this study
- Who is it for?
- Ages 18 to 39 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- hCG
- What is being tested?
- 16mm triggering
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- No sites listed yet
- Study dates
- Jan 2010to May 2011
- Phase
- Phase 2/3
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 39 years
- Women only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Body mass index between 18 and 29 kg/m²¬
- Presence of both ovaries
- Basal levels of estradiol (≤ 80 pg/ml) and progesterone (≤ 1.6ng/ml) on day one of the cycle
- Treatment with IVF/ICSI
- Embryo transfer on day 3 (1 or 2 embryos)
- Patients can enter in the study only once
Who cannot join
- Presence of endometriosis stage ≥3(AFS)
- Polycystic ovarian syndrome (Rotterdam criteria)
- Need for preimplantation genetic diagnosis (PGD)
- Azoospermia testicular sperm extraction (TESE)
About this study
Official title: Does Earlier Administration Of Human Chorionic Gonadotropin (hCG) Improve The Probability Of Pregnancy In Cycles Stimulated With Rec-FSH AND GnRH Antagonists? A Prospective Randomized Trial
The effect of altering the timing of hCG administration on the ongoing pregnancy rate in patients stimulated with recombinant-FSH (rec-FSH)/gonadotrophin releasing hormone (GnRH) antagonists for in vitro fertilisation (IVF).
Read the detailed description
Progesterone elevation has been associated with prolongation of the follicular phase in GnRH antagonists cycles by two days after the commonly used criterion of the presence of at least three follicles of >or= 17 mm has been met. Such an intervention is associated with significantly lower ongoing pregnancy rates in GnRH antagonist cycles, without an apparent deterioration of embryo quality.
The adverse effect of P elevation on the day of hCG administration might be explained by the induction of differences at the histological level as well as at the gene expression level between endometrial samples exposed to varying concentrations of progesterone (P). Prolongation of follicular phase by delaying hCG administration for two days is associated with a higher incidence of endometrial advancement on the day of oocyte retrieval in GnRH antagonist cycles (Kolibianakis et al., 2005). Moreover, Vaerenbergh et al., (2011) demonstrated a distinct difference in endometrial gene expression profile between patients with progesterone serum concentration above and below the threshold of 1.5 ng/ml on the day of HCG administration.
Due to the fact that earlier triggering of final oocyte maturation is expected to result in lower progesterone levels on the day of hCG administration it might be assumed that such an intervention might result in an improved probability of pregnancy by leading to a less deranged and more receptive endometrium.
The purpose of this randomized controlled trial is to evaluate whether triggering of final oocyte maturation as soon as ≥ 3 follicles ≥ 16mm are present on ultrasound or one day later affects the probability of pregnancy in patients stimulated with rec-FSH/GnRH- antagonists for IVF.
- Conditions
- hCG
- Being tested
- 16mm triggering
- Keywords
- hCG triggering, pregnancy, GnRH antagonist
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
16mm triggeringOther
Final oocyte maturation will be achieved by administration of 10.000 IU of hCG (Pregnyl®). Randomization will be into 2 groups:
- Group A (early hCG group): hCG will be administrated as soon as ≥ 3 follicles ≥ 16mm were present on ultrasound.
| Study group | Role | What they receive |
|---|---|---|
| 16mm follicles | Experimental | Not described Receives: Other: 16mm triggering |
What is being measured
The primary outcome is the main question the study is designed to answer.
Ongoing pregnancy rate.
Measured: 1 year
Secondary outcomes (1)
number of MII oocytes.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Jul 2011 (estimated)
- Study startJan 2010
- Primary completionApr 2011
- Study completionMay 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for hCGStudies of the same condition, open and under way.
- More trials run by Universitair Ziekenhuis BrusselThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2/3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Universitair Ziekenhuis Brussel
- Sponsor type
- University, hospital or other
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01390207
- Sponsor's protocol ID
- 1971
- Acronym
- 16mm
- Status last verified
- Jul 2011
- First submitted
- 19 May 2011
- Last updated
- 4 Aug 2011
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 4 Aug 2011. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Does Earlier Administration Of Human Chorionic Gonadotropin (hCG) Improve The Probability Of Pregnancy In Cycles Stimulated With Rec-FSH AND GnRH Antagonists? A Prospective Randomized Trial
- ClinicalTrials.gov ID
- NCT01390207
- Acronym / sponsor ID
- 16mm / 1971
- Conditions
- hCG
- Keywords
- hCG triggering, pregnancy, GnRH antagonist
- Phase
- Phase 2/3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Universitair Ziekenhuis BrusselUniversity, hospital or other
- Study start
- Jan 2010
- Primary completion
- Apr 2011 (actual)
- Study completion
- May 2011 (actual)
- First posted
- 8 Jul 2011 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The effect of altering the timing of hCG administration on the ongoing pregnancy rate in patients stimulated with recombinant-FSH (rec-FSH)/gonadotrophin releasing hormone (GnRH) antagonists for in vitro fertilisation (IVF).
Detailed description
Progesterone elevation has been associated with prolongation of the follicular phase in GnRH antagonists cycles by two days after the commonly used criterion of the presence of at least three follicles of >or= 17 mm has been met. Such an intervention is associated with significantly lower ongoing pregnancy rates in GnRH antagonist cycles, without an apparent deterioration of embryo quality.
The adverse effect of P elevation on the day of hCG administration might be explained by the induction of differences at the histological level as well as at the gene expression level between endometrial samples exposed to varying concentrations of progesterone (P). Prolongation of follicular phase by delaying hCG administration for two days is associated with a higher incidence of endometrial advancement on the day of oocyte retrieval in GnRH antagonist cycles (Kolibianakis et al., 2005). Moreover, Vaerenbergh et al., (2011) demonstrated a distinct difference in endometrial gene expression profile between patients with progesterone serum concentration above and below the threshold of 1.5 ng/ml on the day of HCG administration.
Due to the fact that earlier triggering of final oocyte maturation is expected to result in lower progesterone levels on the day of hCG administration it might be assumed that such an intervention might result in an improved probability of pregnancy by leading to a less deranged and more receptive endometrium.
The purpose of this randomized controlled trial is to evaluate whether triggering of final oocyte maturation as soon as ≥ 3 follicles ≥ 16mm are present on ultrasound or one day later affects the probability of pregnancy in patients stimulated with rec-FSH/GnRH- antagonists for IVF.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| 16mm follicles | Experimental | Other: 16mm triggering |
Who may qualify
- Ages
- 18 to 39 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- Body mass index between 18 and 29 kg/m²¬
- Presence of both ovaries
- Basal levels of estradiol (≤ 80 pg/ml) and progesterone (≤ 1.6ng/ml) on day one of the cycle
- Treatment with IVF/ICSI
- Embryo transfer on day 3 (1 or 2 embryos)
Key exclusion criteria (4 listed)
- Presence of endometriosis stage ≥3(AFS)
- Polycystic ovarian syndrome (Rotterdam criteria)
- Need for preimplantation genetic diagnosis (PGD)
- Azoospermia testicular sperm extraction (TESE)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| 16mm triggeringFinal oocyte maturation will be achieved by administration of 10.000 IU of hCG (Pregnyl®). Randomization will be into 2 groups: • Group A (early hCG group): hCG will be administrated as soon as ≥ 3 follicles ≥ 16mm were present on ultrasound. | Other | 16mm follicles |
Primary outcome
Ongoing pregnancy rate.
Time frame: 1 year
1 secondary outcome
number of MII oocytes.
Time frame: 1 year
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Aug 2011.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 2/3 study testing 16mm triggering in people with hCG, run by Universitair Ziekenhuis Brussel.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Aug 2011. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Ongoing pregnancy rate. (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Aug 2011.