CompletedPhase 1Phase 2Relapsing and progressiveNCT04144257

What it found

Results posted, no main test reported

Results are posted in the registry, but without a statistical test of the main measure. See the numbers below.

What was tested

Treatment tested

  • [F-18]PBR06
  • [C-11]Methylreboxetine

Results by group

Standardized Uptake Value Ratio (SUVR)

Baseline

GroupValueIntervalNumber analysed
Subjects Diagnosed With Multiple Sclerosis0.78 SUVR0.06 (Standard Deviation)7

Area Under the Curve Ratio (AUCR)

Baseline

GroupValueIntervalNumber analysed
Subjects Diagnosed With Multiple Sclerosis1.01 AUCR0.05 (Standard Deviation)7
Subjects Diagnosed With Multiple Sclerosis0.84 AUCR0.09 (Standard Deviation)7

Subjects Diagnosed With Multiple Sclerosis

1.01

Subjects Diagnosed With Multiple Sclerosis

0.84

Values as posted on ClinicalTrials.gov. Outcomes measured differently across trials are not directly comparable.

Safety

GroupParticipants at riskSerious adverse eventsDeaths
Subjects Diagnosed With Multiple Sclerosis100 (0.0%)0

As posted on ClinicalTrials.gov. Serious adverse events include any serious health event during the trial, whether or not the treatment caused it.

What it measured

Main measures

  • Standardized Uptake Value Ratio (SUVR)

    Baseline

    Smouldering inflammation
  • Area Under the Curve Ratio (AUCR)

    Baseline

Other measures (2)

  • Correlations Between Modified Fatigue Impact Scale (MFIS) and PET Outcome Measures

    Baseline

    Fatigue
  • Correlations Between Expanded Disability Status Scale (EDSS) and PET Outcome Measures

    Baseline

    Disability progression

Who could take part

Relapsing and progressive · 18 to 60

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

As registered. Criteria can change, so ask the trial team or your neurologist.

About this trial

In the sponsor's words

The overarching aim is to assess the role of microglial activation and norepinephrine transporter binding in pathogenesis of MS-related fatigue, using novel Positron Emission Tomography (PET) radiotracers, [F-18]PBR06 and [C-11]MRB. Specific Aims: Specific Aim 1: To determine the relationship of cerebral microglial activation, as assessed by [F-18]PBR06 PET, with MS-related fatigue. Specific Aim 2: To determine the relationship of norepinephrine transporter (NET) binding, as assessed by [C-11]MRB PET, with MS-related fatigue. Specific Aim 3: To determine the relationship of microglial activation and NET binding, with grey matter pathology (lesion load and brain atrophy) assessed using 7T MRI, and evaluate their independent contribution in development of MS-related fatigue.

Papers

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    Related trials

    History

      1. Started

        Mar 2020

      2. Main results due

        Apr 2021

      3. Finished

        Apr 2021

      4. Results posted

        Oct 2026

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