Clinical trial Recruiting at 1 site Observational Ages 18 and up

Understanding inflammation in relapsing remitting Multiple Sclerosis

Official title: Investigation of Smoldering Inflammation in Multiple Sclerosis

Run by Washington University School of Medicine · NCT06591429 · Data updated 2026-11-12

This study looks at the type of inflammation in people with relapsing remitting Multiple Sclerosis to see why some inflammation sticks around even after treatment and how this might help improve future therapies.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment25 (estimated)
SponsorWashington University School of Medicine
Academic / other
Drugs / interventionsocrelizumab, natalizumab, radiation
Locations1 site (St Louis, Missouri)
StatusRecruiting
StartedJune 19, 2024
Main results expectedJune 30, 2027
Study endsJune 30, 2027
Registry record updatedApril 28, 2026
Trial IDNCT06591429 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are adults aged 18 and older with a diagnosis of active relapsing remitting Multiple Sclerosis who are treatment naïve except for relapse-related treatments.

Probably not a fit

Patients with stable MS who do not have active disease or those who have previously received high-efficacy DMTs may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to investigate the nature of inflammation in patients with relapsing remitting Multiple Sclerosis (MS) using advanced imaging techniques and cerebrospinal fluid analysis. It seeks to compare abnormal neural inflammation with cellular and molecular inflammation, particularly focusing on why some inflammation persists even after treatment with high-efficacy disease-modifying therapies (DMTs). By identifying components of inflammation that do not resolve with current therapies, the study hopes to inform future treatment strategies targeting these persistent inflammatory processes.

Why it matters

Potential benefit: If successful, this study could lead to new therapies that address the underlying causes of disability in MS patients.

How similar studies have gone: While this approach is innovative, similar studies have shown promise in understanding inflammation in MS, but the specific focus on smoldering inflammation is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male or female, any race
* Age ≥ 18 years
* Capable of providing written informed consent for volunteering to undergo research procedures
* Diagnosis of MS as established by the referring physician and confirmed by the Sponsor-Investigator. Only patients with active disease, defined as at least 1 enhancing lesion present in the preceding 6 months, will be enrolled
* Treatment naïve except for relapse-related treatments such as corticosteroids or plasmapheresis,
* Planned initiation, at the discretion of the referring physician, of a high efficacy DMT. High efficacy DMT will be defined to include ocrelizumab, natalizumab, or any MS treatment in the opinion of the Sponsor-Investigator to have similar efficacy as the named treatments
* Clinical labs, including at least a CBC and BMP, without significant abnormality as determined by the Sponsor-Investigator or designee, within the 3 months prior to enrollment

Exclusion Criteria:

* Presence of a low binding polymorphism for TSPO
* Hypersensitivity to \[11C\]-CS1P1, \[11C\]-DPA-713, \[18F\]-FDG, or any of their excipients
* Contraindications to PET, CT or MRI (e.g. certain incompatible electronic medical devices, inability to lie still for extended periods) that make it potentially unsafe for the individual to participate
* eGFR less than 60 (for gadolinium)
* Severe claustrophobia
* Women who are currently pregnant or breast-feeding
* Currently undergoing radiation therapy
* Insulin dependent diabetes
* Contraindication to lumbar puncture (LP), including use of antiplatelet therapy (other than aspirin 81mg), therapeutic anticoagulation, or space occupying intracranial mass. History of a coagulopathy is also exclusionary
* Any condition that, in the opinion of the Sponsor-Investigator or designee could increase risk to the participant, limit the participant's ability to tolerate the research procedures or interfere with collection of the data (e.g., renal or liver failure, advanced cancer)
* Current or recent (within 12 months prior to screening) participation in research studies involving radioactive agents such that the total research-related radiation dose to the participant in any given year would exceed 5 rem

Where it's running

  • Barnes Jewish Center for Clinical Imaging Research
    St Louis, Missouri, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.