Which IVF stimulation works better? new study compares progestin vs. standard care
NCT ID NCT06378268
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares two methods of ovarian stimulation for IVF: using progestin hormones versus the standard GnRH antagonist protocol. The goal is to see which approach leads to more ongoing pregnancies at 12 weeks. The trial involves 626 women aged 18-40 with a BMI of 25 or less and good ovarian reserve, all undergoing IVF with frozen embryo transfer.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 626 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2024
- Expected to finish
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Sep 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 40 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Woman aged 18-40 * BMI ≤ 25kg/m2 * AMH \> 1.2ng/mL or AFC \>5 * Having indication for IVF treatment * Agree to have frozen embryo(s) transfer * Not participating in any other clinical trials * Provision of written informed consent to participate Exclusion Criteria: * Undergoing IVF cycle with other protocols: Down-regulation, mild stimulation, Random start * Oocyte donation cycles * Undergoing vitrified oocyte accumulation * Oocyte cryopreservation * Cycle with PGT (Preimplatation genetic testing) * Women with PCOS * Women allergy to dydrogesterone, rFSH, GnRH antagonist
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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My Duc Hospital
Ho Chi Minh City, Ho Chi Minh City, 70000, Vietnam
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