Comparing two methods for fertility preservation in women

Comparison of Sequential CFA vs CFA +rFSH for Elective Fertility Preservation.. The 2-shot Protocol.

Phase 3 Interventional Fundacion Dexeus · NCT06134479

This study is testing two different ways to give a fertility medication to see if one method is just as good as the other for women looking to preserve their fertility.

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment194 (estimated)
Ages18 Years to 40 Years
SexFemale
SponsorFundacion Dexeus Academic / other
Locations1 site (Barcelona)
Trial IDNCT06134479 on ClinicalTrials.gov

What this trial studies

This phase 3 interventional trial aims to compare the effectiveness of two different administration methods of Corifollitropin alpha (CFA) for women undergoing elective fertility preservation. One group will receive a sequential two-shot CFA regimen, while the other will receive a single CFA shot followed by daily rFSH injections. The primary outcome is the number of mature oocytes retrieved, assessed under a progestin-primed ovarian stimulation protocol. The study is designed as a non-inferiority trial to determine if the sequential method is as effective as the combined approach.

Who should consider this trial

Good fit: Ideal candidates for this study are women aged 18 to 40 with specific ovarian reserve parameters and a BMI between 18 and 30.

Not a fit: Patients with medically indicated fertility preservation or those with conditions like PCOS or significant hormonal imbalances may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective and potentially less invasive method for women seeking to preserve their fertility.

How similar studies have performed: While this approach is innovative, similar studies have shown promising results in fertility preservation, suggesting potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* AFC ≤20
* Anti-Mullerian hormone (AMH) ≤3ng/ml (AMH result of up to one year will be valid)
* Between 18 and 40 years old
* BMI \>18 and \<30 kg/m2
* Body weight \> 50 kg for \> 36 years
* Able to come to the Center to comply with the procedures of the study: blood tests, appointments and drug dispensation.

Exclusion Criteria:

* Medically indicated fertility preservation
* AFC \> 20
* Polycystic ovarian syndrome (PCOS) according to the Rotterdam criteria
* FSH ≥ 20
* History of untreated autoimmune, endocrine or metabolic disorders
* Contraindication for hormonal treatment
* Recent history of severe disease requiring regular treatment (clinically significant concurrent medical condition that could compromise subject safety or interfered with the trial assessment).

Where this trial is running

Barcelona

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 Fertility
Last reviewed 2026-06-15 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.