Ovarian stimulation using Follitropin delta and Dydrogesterone for oocyte donors

Luteal Phase Ovarian Stimulation With Follitropin Delta and Dydrogesterone: a Randomized Cross Over Pilot Trial

Not applicable Interventional CRG UZ Brussel · NCT05521828

This study is testing two different ways to help women donate eggs using a new medication to see which method works better and is safer.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment50 (estimated)
Ages18 Years to 36 Years
SexFemale
SponsorCRG UZ Brussel Academic / other
Locations1 site (Brüssel)
Trial IDNCT05521828 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates a new approach to controlled ovarian stimulation (COS) for oocyte donors by comparing luteal phase ovarian stimulation (LPOS) with progestin-primed ovarian stimulation (PPOS). The study will involve 50 participants who will undergo two different treatment sequences, each involving a cycle of ovarian stimulation with Follitropin delta and Dydrogesterone. Participants will be monitored through hormonal assessments and ultrasound evaluations to track follicular growth and response to treatment. The aim is to determine the effectiveness and safety of these stimulation protocols in improving oocyte retrieval outcomes.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy women aged 18 to 28 with regular menstrual cycles who are willing to donate their oocytes.

Not a fit: Patients with severe endometriosis, hormonal imbalances, or those with contraindications to gonadotropins may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the efficiency of oocyte donation procedures, leading to better outcomes for patients undergoing fertility treatments.

How similar studies have performed: Previous studies have shown promising results with similar ovarian stimulation protocols, indicating potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Body mass Index (BMI) ≥18 to \< 28
* Signed informed consent
* Regular menstrual cycle length i.e. 24-35 days

Exclusion Criteria:

* Contraindications to the use of gonadotropins
* Endometriosis grade 3-4
* Patients with Anti-mullerian hormone (AMH) \<1.1 ng/ml and/or antral follicular count (AFC)\<7
* Patients with Follicle Number Per Ovary (FNPO) ≥ 19 and/or AMH \>5ng/ml
* Patients under contraception with hormonal intrauterine device (IUD)
* Any untreated endocrine abnormality

Where this trial is running

Brüssel

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Oocyte DonorsOocyte Donationcumulus-oocyte complexesprogestin primed ovarian stimulationcontrolled ovarian stimulationluteal phase ovarian stimulationfollicular phase ovarian stimulationfollitropin delta
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.