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Brain scans reveal clues to MS fatigue

NCT ID NCT04144257

Knowledge-focused Sponsor: Brigham and Women's Hospital 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study at Brigham and Women's Hospital used special PET scans to look at brain inflammation and chemical activity in 10 people with multiple sclerosis. The goal was to understand what causes the severe fatigue many MS patients experience. Researchers measured brain cell activity and chemical binding, then compared it to fatigue levels reported by participants.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
PET radiopharmaceuticals ([F-18]PBR06 and [C-11]MRB)
What this could lead to
If successful, this could help explain why some people with MS feel severe fatigue, potentially pointing toward new treatments.
What could go wrong
This was a very small study (10 people) that only looked at brain images, not treatments. The findings may not apply to everyone with MS.

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

Phase 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

10 people

The number who actually took part.

Started

Mar 2020

Finished

Apr 2021

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 60 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: * Subjects meeting the definition for RRMS or SPMS by International Panel (2017 McDonald) Criteria. * We will recruit patients with RRMS, recently diagnosed in the last 2 years. There will be no disease modifying therapy restrictions for RRMS or SPMS patients. * Male and female subjects age 18 to 60 years. * Patients able to withhold medication that may interfere with C-11\[MRB\] radiotracer uptake for 24 hours before the scan. Exclusion Criteria: * Relapse/Corticosteroid treatment in the past 4 weeks to avoid transient effects on imaging * Individuals with a known alternate neurologic disorder, previous head injury, or substance abuse. * Individuals with bipolar disease and schizophrenia * Concurrent medical conditions that contraindicate study procedures. * Women who are pregnant or nursing. Also, any woman who is seeking to become pregnant or suspects she is pregnant will be excluded from enrollment. * Claustrophobia * Non-MRI compatible implanted devices * Low affinity binders

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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

Contacts and locations

Locations

  • Brigham MS Center, 60 Fenwood Road

    Boston, Massachusetts, 02115, United States

More trials for these conditions

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