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Scientists probe immune secrets of four skin diseases

NCT ID NCT03976622

Knowledge-focused Sponsor: University Hospital, Bordeaux 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study aims to understand inflammation in four chronic skin conditions: vitiligo, psoriasis, eczema (atopic dermatitis), and alopecia areata. Researchers will collect blood and small skin samples from 450 adults to analyze immune cells called T-cells. The goal is to describe how these cells differ in each disease, which may help guide future treatments.

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 new targets for treating chronic inflammatory skin diseases.
What could go wrong
This is an observational study, not a treatment trial. It will not directly benefit participants and may not lead to new therapies.

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 450 people

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

Started

Jan 2020

Expected to finish

Jun 2027

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

450 patients (300 patients with vitiligo, 50 psoriasis patients, 50 patients with atopic dermatitis, 50 patients with alopecia areata)

Ages

18 to 75 years

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.

Inclusion Criteria: * Patients aged 18 to 75 years; * Patients with non-segmental vitiligo; * Patients with plaque psoriasis; * Patients with atopic dermatitis; * Patients with alopecia areata sclerosis; * written consent, free, informed and signed by the patient and the investigator (before any examination required by the study); * Subject affiliated or beneficiary of a social security system. Exclusion Criteria: * Patients with segmental vitiligo * Patients under local treatment (topical corticosteroid-Calcineurin inhibitor) for less than two weeks. * Patients on therapy, systemic treatments: acitretin, methotrexate, cyclosporine, Apremilast, infliximab, adalimumab, etanercept, ustekinumab, secukinumab, ixekizumab, dupilumab) for less than 4 weeks. * Pregnant or breastfeeding women * Patient (e) under guardianship * Patient (e) Non-affiliated (e) a social protection

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Conditions

The condition(s) this trial relates to.

alopecia areata atopic eczema dermatitis psoriasis vitiligo

As listed by the trial registrant

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

Alopecia areata Atopic dermatitis Psoriasis Vitiligo

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Service de Dermatologie - Hôpital Saint-André

    Bordeaux, Bordeaux, 33075, France

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