Skip to content

Estrogen Pretreatment Prior to GnRH Antagonist Protocol

Interest of a Steroid Pre-treatment Prior to IVF Protocol With Ovarian Stimulation by Recombinant FSH and With LH Surge Blockage by Daily GnRH Antagonist

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01489852
Enrollment
472
Registered
2011-12-12
Start date
2006-12-31
Completion date
2011-05-31
Last updated
2011-12-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Infertility

Keywords

Assisted reproductive treatment, GnRH antagonist, Estrogen pre-treatment, Ovarian stimulation

Brief summary

The purpose of this study is to assess whether estrogen pre-treatment can allow retrieval of 2 additional oocytes in GnRH antagonist protocol.

Interventions

DRUG17beta-estradiol

Pretreatment with 17beta-estradiol (Provames®, Aventis, Paris, France) was administered daily (2 mg twice a day) during the cycle preceding the IVF/ICSI cycle, starting 7 days before the predicted onset of menses and administered up until to the following Thursday after the occurrence of menses.

Sponsors

Gemer
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 38 Years
Healthy volunteers
No

Inclusion criteria

* regular normo-ovulatory cycles (28 to 35 days) * age \< 38 years, * body mass index (BMI) between 18 and 30 * first or second IVF/ICSI attempt

Exclusion criteria

* high basal levels of serum FSH or E2, * less than 5 follicles at the antral follicular count performed on day 3 of a spontaneous cycle, * history of high (\>20 oocytes) or low (\< 5 oocytes) ovarian response in a previous IVF attempt

Design outcomes

Primary

MeasureTime frame
number of retrieved oocytesat the ovarian puncture, 36 hours post HCG administration

Secondary

MeasureTime frameDescription
pregnancy rateat pregnancy test and at 6 Week US examination
delivery rate9 months later
number of obtained embryos2 days after in vitro fertilization
duration of FSH administrationat the end of ovarian stimulation usually after a mean of 12 days of administrationnumber of days of administration
Total FSH doseat the end of ovarian stimulation usually after a mean of 12 days of administrationdaily dose x number of days of administration

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 26, 2026