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Can genes predict aggressive MS? new study aims to find out

NCT ID NCT04873492

Knowledge-focused Sponsor: Nantes 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is collecting blood, saliva, and stool samples from 130 people with multiple sclerosis (MS) and healthy volunteers. Researchers will analyze the genetic activity of immune cells to understand why some patients have a mild form of MS while others become severely disabled within a few years. The goal is to identify early markers that could predict a poor outcome, but this is an observational study and does not test any 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 could help doctors predict early which MS patients will have a severe course, enabling more personalized treatment decisions.
What could go wrong
This is an observational study, not a treatment trial. It may not find clear markers, and any findings would need years of further research to become useful in practice.

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 130 people

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

Started

Jan 2022

Expected to finish

Jul 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.

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 : Common criteria for retrospective MS patients: * Patients aged 18 years or older * Clinical isolated syndrome (CIS) with or without dissemination in space * Patients affiliated to an appropriate health insurance Criteria for Aggressive MS group • Start of a 2nd line therapy within the two years following the CIS Criteria for Non aggressive MS group * No conversion according to McDonald criteria from clinical isolated syndrome to multiple sclerosis within 2 years or * Conversion based to McDonald criteria treated or not with first line disease modifying therapy within 2 years. * Have a minimum of least 2 years of follow-up. Healthy volunteers * Aged 18 years or older * No history of clinically isolated syndrome or MS Pairing criteria : * Age +/- 5 years * Sex Prospective MS Patients * Patients aged 18 years or older * Clinical isolated syndrome (CIS) with or without dissemination in space * Patients affiliated to an appropriate health insurance Exclusion Criteria : * Ongoing participation to a another study * Refusal to genetic analyses * Immunosuppressive drug at the time of blood collection * Plasma exchange or corticosteroid treatment within the four weeks prior to blood sample * Adults under a legal protection regime (guardianship, trusteeship, judicial safeguard) * Pregnancy

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Conditions

The condition(s) this trial relates to.

multiple sclerosis

As listed by the trial registrant

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

Multiple sclerosis

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

  • Nantes University Hospital

    RECRUITING

    Nantes, Loire-Atlantique, 44093, France

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