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Progesterone levels key to IVF success in frozen embryo transfers

NCT ID NCT05109676

Knowledge-focused Sponsor: University Hospital, Toulouse Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 300 women undergoing frozen embryo transfer as part of IVF treatment. Researchers measured progesterone levels in the blood to understand how the body processes the hormone. The goal was to find out if low progesterone on transfer day leads to higher failure rates and miscarriage, helping doctors adjust treatment for better outcomes.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

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

300 people

The number who actually took part.

Started

Dec 2021

Finished

Jun 2022

Lead sponsor

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

18 years and older

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adult patient undergoing a frozen embryo transfer in an artificial cycle at the AMP center of the Toulouse University Hospital. * Affiliation to a social security scheme or equivalent * Patient fulfilling the conditions for access to the AMP according to French bioethics law * Patient having given her consent (oral or written) after clear and fair information Exclusion Criteria: * Patient who received intramuscular administration of progesterone during the endometrial preparation phase. * Patient with comprehension difficulties. * Protected adult patient (safeguard of justice, guardianship or curatorship)

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Conditions

The condition(s) this trial relates to.

ventricular fibrillation, paroxysmal familial, type 1

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

IVF

Contacts and locations

Locations

  • CHU Toulouse

    Toulouse, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.