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Tiny pollutants, big risks: new study probes airborne threats to fetal health

NCT ID NCT07238608

Knowledge-focused Sponsor: Instituto de Investigacion Sanitaria La Fe 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is tracking 1,600 pregnant women to understand how tiny air pollution particles and microplastics might interfere with fetal development. Researchers will measure exposure and look for links to preterm birth, low birth weight, and other complications. The goal is to uncover the biological mechanisms behind these risks, not to test a treatment.

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 reveal how air pollution harms fetal development, pointing toward ways to reduce preterm births and related health issues.
What could go wrong
This is an observational study, not a treatment trial. It can show links but not prove cause and effect, and results may take years to translate into practical advice.

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 1,600 people

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

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Dec 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

Pregnant mothers will be recruited at the first antenatal visit (around eight weeks of gestation).

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: * Agreement to sign the informed consent; * Non-smoking mothers and no exposure to environmental (second-hand) smoke (smoking influences UFP measurements); * ≥18 years old (mothers have to place sensors, mothers with childhood pregnancies may live at their parental home); * Not expecting to terminate the pregnancy (no measurements of the child); * Having resided in the geographical area of research for a minimum period of 1 year (to be eligible for modeling exposures). Exclusion Criteria: * First visit after 11 weeks of gestation (to ensure 2-week monitoring in the first trimester); * Pregnancy complications that limit exposure measurements in urine (because it may cause polyuria, for example, gestational diabetes); * Known kidney disease (might influence exposure measurements in urine); * Multiple pregnancy (twin or more pregnancies may have a higher risk for complications or preterm birth, no measurements in the last trimester).

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Conditions

The condition(s) this trial relates to.

Noncommunicable Diseases

As listed by the trial registrant

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

Pregnant women

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

  • Instituto de Investigación Sanitaria La Fe

    RECRUITING

    Valencia, Valencia, 46016, Spain

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