CI

At a glance

ClinicalIndex Comparison Record
Phase 4Completed· 110 enrolled
Drug / intervention
Ovarian Stimulation with CC+rFSH +1 moredrug
Likely dose
Ovarian Stimulation with CC+rFSH 50 mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT04983173
NCT04983173Phase 4Completed

The Impact of the Intensity of Ovarian Stimulation on Embryo Quality in Predicted Suboptimal Responders. A Randomized Controlled Trial

Fundación Santiago Dexeus Font·interventional·Posted Jul 30, 2021·Updated Apr 14, 2026

In Brief

A Phase 4 clinical trial evaluating Ovarian Stimulation with CC+rFSH and Ovarian Stimulation with rFSH for Infertility. Completed, enrolled 110 participants across 1 site.

Detailed Summary

The management of suboptimal ovarian responders remains a challenging task in IVF. These patients are frequently managed with an intense stimulation protocol of ovarian stimulation in order obtain the maximum number of embryos and, therefore, maximize the cumulative live birth rate. However, the concept of "the more the better" has been recently defied by the one of "mild stimulation". Defenders of this protocol state that with mild stimulation only the best quality oocytes are allowed to grow and, therefore, higher quality embryos will be obtained. However, the impact of the intensity of ovarian stimulation on embryo quality is far from consensual. Moreover, its effect on early embryo development has never been evaluated. Therefore, the investigators set out to perform this randomized controlled trial comparing the number of GQB and the morphokinetic parameters of early embryo development in infertile patients undergoing two different intensities of ovarian stimulation, a milder approach (CC plus 150 IU daily dose of rFSH) and a more intense approach (300 IU daily dose of rFSH).

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsInfertility
CountriesSpain
Collaborators--

Timeline

Phase 4CompletedFinished
20222023202420252026
First PostedJul 30, 2021
Enrollment StartNov 23, 2021
Primary CompletionMar 11, 2026
TodayJul 2, 2026
Enrollment to primary: 4.3 yearsPosted 4.9 years ago

Interventions

Ovarian Stimulation with CC+rFSHdrug

: CC 50 mg/day (Omifin®) + rFSH 150 IU (Ovaleap®) GnRH antagonist: ganirelix 0.25 mg (Orgalutran®) Recombinant human chorionic gonadotropin (rhCG) 250 μg (Ovitrelle®) micronized progesterone 200 mg 3id (Utrogestan®)

Ovarian Stimulation with rFSHdrug

rFSH 300 IU rFSH (Ovaleap®) GnRH antagonist: ganirelix 0.25 mg (Orgalutran®) Recombinant human chorionic gonadotropin (rhCG) 250 μg (Ovitrelle®) micronized progesterone 200 mg 3id (Utrogestan®)