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Twin study to uncover hidden environmental health risks

NCT ID NCT07408973

Knowledge-focused Sponsor: University Hospital, Montpellier 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study will follow 120 women with twin pregnancies and their 240 children to see how environmental exposures, lifestyle, and diet affect health at birth and during the first year of life. Researchers will collect biological samples and use models to measure exposure to pollutants. The goal is to better understand what influences early health in twins.

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 study could help identify environmental factors that influence twin pregnancy outcomes and early childhood health.
What could go wrong
This is an observational pilot study with no intervention, so it cannot prove cause and effect. Results may not apply to other populations.

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 360 people

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

Expected to start

Dec 2026

An estimate. Start dates often move.

Expected to finish

Dec 2030

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

Any dichorionic or monochorionic twin pregnancy of more than 25 weeks' gestation, monitored at the University Hospital of Montpellier.

Ages

18 years and older

Sex

Anyone

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.

Mother's inclusion Criteria: * Patient of legal age (≥ 18 years) * Patient pregnant with a twin pregnancy ≥ 25 weeks of gestation * Pregnancy initially twin, triplet, or quadruplet, progressing to a twin pregnancy after spontaneous or medical embryo reduction, or after selective termination of pregnancy * Delivery planned at Montpellier University Hospital Twins' inclusion Criteria: * Twins born in a twin pregnancy ≥ 25 weeks of gestation Mother's exclusion Criteria: * Pregnant woman with at least one fetus presenting with a chromosomal or genetic abnormality or a polymalformative syndrome, and for whom early postnatal death is anticipated. * Planned travel preventing the study from being completed * Failure to obtain informed and written consent from the patient for participation in the study and the collection of biological samples * Patient unable to read and/or write French * Patient unable to understand and/or speak French * Patient not benefiting from a national health insurance scheme * Person under legal protection, guardianship or curatorship * Person participating in other interventional research study Twins' exclusion Criteria: * Mother's absence from or withdrawal from the study * Birth in a facility other than Montpellier University Hospital * One or two children under guardianship * Lack of informed and written consent from legal representatives * One of the two fetuses is expected to die * Lack of informed and written consent from the prospective parent(s) for participation in the study and the collection of biological samples * Parents unable to read and/or write French * Parents not understanding and/or speaking French

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Conditions

The condition(s) this trial relates to.

Obstetric Labor Complications

As listed by the trial registrant

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

Pregnancy TWIN

How to take part

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

  1. 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 ↗

  2. 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.

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