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MS drug shot study tracks immune reactions

NCT ID NCT05925049

Knowledge-focused Sponsor: Biogen 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study tracks about 400 people with multiple sclerosis (MS) to see how many develop antibodies against the drug natalizumab when it is given as a shot under the skin. Researchers will also look at side effects and relapse rates in those who develop antibodies. The goal is to better understand the body's immune response to this form of the medication.

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 400 people

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

Started

Jun 2023

Expected to finish

Oct 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The study will include available EU MS registry participants.

Ages

18 to 64 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.

Key Inclusion Criteria: * Participants who are natalizumab-naïve and other MS mAb-naive and who start on natalizumab SC. * Participants who have previously received natalizumab IV and switch from natalizumab IV to SC administration. Key Exclusion Criteria : * For the natalizumab-naive and other MS mAb-naive cohort, participants who previously received natalizumab or other MS mAbs will be excluded. * For the natalizumab-experienced cohort, participants who are naive to natalizumab will be excluded. NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

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Conditions

The condition(s) this trial relates to.

multiple sclerosis relapsing-remitting multiple sclerosis

As listed by the trial registrant

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

Multiple sclerosis

Contacts and locations

Locations

  • Research Site

    Cambridge, Massachusetts, 02142, United States

More trials for these conditions

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