Evaluating the role of progesterone levels on pregnancy outcomes in frozen embryo transfers

The Importance of Embryo Transfer Day Progesterone Value in Natural Cycle Frozen Embryo Transfers and the Evaluation of the Effect of Rescue Therapy on Pregnancy Outcomes in Patients With Low Progesterone Levels: A Multicentric Randomized Controlled Study.

Not applicable Interventional Bezmialem Vakif University · NCT05481684

This study is testing how different levels of progesterone on the day of frozen embryo transfer affect pregnancy success in women aged 20-42 undergoing IVF.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment126 (estimated)
Ages20 Years to 42 Years
SexFemale
SponsorBezmialem Vakif University Academic / other
Locations3 sites (Istanbul and 2 other locations)
Trial IDNCT05481684 on ClinicalTrials.gov

What this trial studies

This study investigates how progesterone levels on the day of embryo transfer affect pregnancy outcomes in women undergoing frozen embryo transfers. It includes women aged 20-42 with a BMI under 30 who are receiving IVF treatment for various infertility factors. The study will utilize a controlled ovarian hyperstimulation protocol and assess the impact of low versus normal progesterone levels on the success of the embryo transfer. Participants will be monitored throughout the process, from egg collection to embryo transfer, to evaluate the effectiveness of rescue therapy for those with low progesterone levels.

Who should consider this trial

Good fit: Ideal candidates are women aged 20-42 with a BMI under 30 who are seeking IVF treatment for infertility.

Not a fit: Patients with severe male factor infertility or significant intrauterine structural anomalies may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve pregnancy outcomes for women undergoing frozen embryo transfers by optimizing progesterone management.

How similar studies have performed: Other studies have explored the impact of progesterone on fertility outcomes, suggesting that this approach has potential based on previous findings.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Women between the ages of 20-42 who applied to the infertility clinic
* BMI\<30

Exclusion Criteria:

* Severe male factor (Sperm count \<5 ml/ml, progressively motile sperm count \<10%)
* Intrauterine structural anomalies not corrected by surgery
* Hydrosalpenx if not underwent surgery
* Refusal to participate in the study
* cycle cancelation

Where this trial is running

Istanbul and 2 other locations

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 InfertilityIVFProgesterone
Last reviewed 2026-06-10 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.