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Scientists dig into immune signals to unlock psoriasis mystery

NCT ID NCT05307809

Knowledge-focused Sponsor: Poitiers University Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Sep 01, 2026 · Updated 2 times

Summary

This study looks at 40 adults with psoriasis—some with joint pain (psoriatic arthritis) and some without—to compare immune signals in their blood and skin. Researchers want to understand why some people develop joint problems. Participants give blood and skin samples for lab analysis. No treatment is given; the goal is to learn more about the disease.

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 40 people

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

Started

Aug 2022

Expected to finish

Feb 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.

Ages

18 to 100 years

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: * For psoriasis patients : * Age over 18 years old * Signed informed consent * 5 year old psoriasis at least * At least one skin lesion over 2 cm * Without any articular symptoms * Without any DMARDs * Without anticoagulant treatments or coagulation disease * With normal articular and enthesis sonography * For psoriatic arthritis patients : * Age over 18 years old * Signed informed consent * Psoriatic arthritis according to CASPAR criteria * Without any DMARDs * Without anticoagulant treatments or coagulation disease * With at least one synovitis at inclusion * For controls * Age and sex matched with a patient without any rheumatic or dermatologic medical conditions * No treatment with corticosteroïds or non-steroïdial anti-inflammatory drugsAge over 18 years old Exclusion criteria: ▪ For psoriasis patients : * Joint damage according to CASPAR criteria * Echography activity in favor of chronic inflammatory rheumatism * For patients and controls: * Without social protection rights * People under judiciary protection, of less than 18 years old, pregnant woman, breast feeding women, jailed patients.

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Conditions

The condition(s) this trial relates to.

psoriasis psoriatic arthritis

As listed by the trial registrant

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

Psoriasis Psoriatic arthritis

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

  • Chu Poitiers

    RECRUITING

    Poitiers, France

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