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700 women join study to unlock secrets of recurrent miscarriage

NCT ID NCT05557201

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study follows 700 women who have had three or more early miscarriages or repeated implantation failures. Researchers will collect medical history, run tests, and track outcomes to find immune and genetic factors that may cause these losses. The goal is to better understand why miscarriages happen and improve future care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this research could uncover new causes of recurrent miscarriage, leading to better diagnosis and personalized treatment options.
What could go wrong
This is an observational study, not a treatment trial. It may not directly change care, and findings might not apply to all patients.

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.

Participants

About 700 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2022

Expected to finish

Oct 2029

An estimate. End dates often move.

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.

Who is studied

Patients with recurrent early pregnancy losses (at least 3 fetal losses before 14 weeks of amenorrhea) and/or recurrent implantation failures (at least 3 failures).

Ages

18 to 50 years

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: * Age 18 to 50 years * Patients who have had 3 (or more) early pregnancy losses occurring before 14 weeks of amenorrhea and/or at least 3 implantation failures. * Patients who have been informed and have not objected to participating in the study. * Patients covered by a social security system. Exclusion Criteria: * patients who do not agree the use of their data * Patients on AME * Patients under legal protection

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Conditions

The condition(s) this trial relates to.

Abortion, Spontaneous habitual spontaneous abortion pregnancy loss, recurrent, susceptibility

As listed by the trial registrant

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

Early pregnancy loss Miscarriage

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Internal medicine department, hospital Saint Antoine

    RECRUITING

    Paris, 75012, France

More trials for these conditions

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