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Study identifier: NCT06244745 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Effects of Letrozole During the Luteal Phase After Controlled Ovarian Stimulation in Oocyte Donors.

Condition: Luteinised Follicular Cyst  ·  Sponsor: IVI Madrid

PhasePhase 3
Planned participants152
Who can joinFemale, 18 Years to 34 Years
Healthy volunteersYes

About this study

The objective of this trial is to determine whether the use of letrozole during the luteal phase in oocyte donors diminishes the ovarian volume, as well as to evaluate its effect on the duration of the luteal phase, taking into account hormonal and biochemical markers. Two groups will be established with random allocation of patients and 1:1 proportionality, as follows: * Control group: No specific treatment. * Study group: Oral administration of letrozole 5 mg (each capsule is 2.5 mg) once a day for 5 days starting on the night of the follicular puncture.

This description comes directly from the study's public registry record.

Talk to the study team

Sergio Caballero, PhD  ·  +34 91 180 29 00  ·  sergio.caballero@ivirma.com

Juan Antonio Garcia Velasco, PhD  ·  +34 91 180 29 00  ·  juan.garcia.velasco@ivirma.com

Always discuss trial participation with your own doctor first.

Locations (1)

IVI-MadridMadrid, SpainRecruiting

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Source record: clinicaltrials.gov/study/NCT06244745