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Serotonin receptor may be key to unlocking MS mysteries

NCT ID NCT05746845

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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at whether a specific serotonin receptor, called 5-HT7, could be used as a biomarker for multiple sclerosis (MS). Researchers measured the receptor on different blood cells from 100 people, including those with MS and healthy volunteers. The goal was to better understand the immune system changes in MS, not to test a new treatment.

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

100 people

The number who actually took part.

Started

Mar 2023

Finished

Jul 2024

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

Group 1: Healthy individuals, so-called "control" donors whose blood samples will be collected from the EFS (French Blood Establishment) Group 2: Stable MS patients without inflammatory activity of the disease under high efficacy treatment (Natalizumab or Ocrelizumab) Group 3: Stable MS patients without inflammatory disease activity under moderately effective treatment (Teriflunomide or Fumarate)

Ages

18 to 50 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: * Men and women * Aged between 18 and 50 years old, * With multiple sclerosis already diagnosed and fulfilling the modified Mc Donald criteria * Stable (no relapse in the last 6 months and MRI less than a year old, with no new lesions) and with at least 1 year of treatment with Natalizumab, Ocrelizumab, Teriflunomide or Fumarate * Subject medically fit to give a maximum of 50 ml of extra whole blood * Patient having given their consent to participate in the study Exclusion Criteria: * HIV serology known or discovered during the present episode * Demented patient * Patient treated with corticosteroids in the last month * Non-affiliated person or non-beneficiary of a social security scheme * Uncooperative patient * Patient under legal protection, guardianship or curatorship * Pregnant or breastfeeding women

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • CHU Orléans

    Orléans, 45067, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.