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Scientists hunt for biomarkers linking everyday toxins to allergies and illness

NCT ID NCT06529913

Knowledge-focused Sponsor: Fondazione Policlinico Universitario Agostino Gemelli IRCCS 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 collecting blood, urine, and breath samples from 280 adults—including those with metal allergies and healthy volunteers—to see if exposure to heavy metals and pollutants leaves distinct biological markers. Researchers will compare levels of metals, lung function, and signs of inflammation between groups. The goal is to better understand how environmental exposures may contribute to disease.

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 could help identify biomarkers that predict who is at risk for diseases caused by heavy metals and pollutants.
What could go wrong
This is an early observational study, not a treatment trial. It may not find clear differences between groups, and results may not apply to broader 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.

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

About 280 people

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

Started

Jan 2025

Expected to finish

Dec 2026

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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 subjects (over 18 years of age). * Subjects suffering from allergic contact dermatitis due to metals. * Subjects with systemic allergic syndrome due to metals. * Adult healthy subjects. * Subjects able to give written informed consent. Exclusion Criteria: * Subjects under the age of 18years. * Pregnant/breastfeeding women. * Subjects suffering from chronic renal failure requiring replacement treatment. * Subjects suffering from other systemic pathologies related to exposure to metals. * Subjects suffering from gastrointestinal diseases such as celiac disease, chronic inflammatory intestinal diseases, tumors, other skin diseases. * Subjects unable to express written informed consent.

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Conditions

The condition(s) this trial relates to.

allergic contact dermatitis atopic eczema contact dermatitis due to nickel digestive system disorder Eczema Environmental Illness food allergy Risk Reduction Behavior

As listed by the trial registrant

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

Allergic contact dermatitis Aluminum allergy Chromium; eczema Environment related disease Environmental exposure Environmental illness Food allergy Functional gastrointestinal disorders Metal allergy Nickel sensitivity Nickel; eczema Oxidative stress Pollution related respiratory disorder Pollution; exposure Respiratory injury Risk reduction

How to take part

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

  1. The places running it

    2 sites. 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

  • Fondazione Policlinico Universitario A. Gemelli IRCCS

    RECRUITING

    Roma, 00168, Italy

  • Università di Bologna

    NOT_YET_RECRUITING

    Bologna, 40126, Italy

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