Evaluating Frexalimab for Relapsing Multiple Sclerosis
Official title: Master Protocol of Two Independent, Randomized, Double-blind, Phase 3 Studies Comparing Efficacy and Safety of Frexalimab (SAR441344) to Teriflunomide in Adult Participants With Relapsing Forms of Multiple Sclerosis
Run by Sanofi · NCT06141473 · Data updated 2026-05-14
This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.
This study is testing a new drug called frexalimab to see if it works better than teriflunomide for adults with relapsing multiple sclerosis.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 55 Years |
| Sex | All |
| Enrollment | 1600 (estimated) |
| Sponsor | Sanofi Industry-sponsored |
| Drugs / interventions | frexalimab |
| Locations | 384 sites (Birmingham, Alabama and 383 other locations) |
| Trial ID | NCT06141473 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 to 55 diagnosed with relapsing forms of multiple sclerosis who meet specific inclusion criteria.
✕Probably not a fit
Patients with primary progressive multiple sclerosis or those with significant risk factors for infections 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 clinical trial aims to assess the efficacy and safety of frexalimab compared to teriflunomide in adults with relapsing forms of multiple sclerosis. Participants aged 18 to 55 will be monitored for their annualized relapse rate over a variable duration of 12 to 40 months. The study includes regular follow-up visits and MRI assessments to track disease progression and treatment response. The trial will involve both active treatments and placebo controls to ensure robust data collection.
Why it matters
Potential benefit: If successful, this treatment could significantly reduce relapse rates in patients with relapsing multiple sclerosis.
How similar studies have gone: Previous studies have shown promise in using similar monoclonal antibody approaches for treating multiple sclerosis, indicating potential for success.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * The participant must have been diagnosed with RMS according to the 2017 revision of the McDonald diagnostic criteria. * The participant has an EDSS score ≤5.5 at the first visit (Screening Visit) * The participant must have at least 1 of the following prior to screening: * ≥1 documented relapse within the previous year OR * ≥2 documented relapses within the previous 2 years, OR * ≥1 documented Gd enhancing lesion on an MRI scan within the previous year. * Contraceptive use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies. Exclusion Criteria: * The participant has been diagnosed with PPMS according to the 2017 revision of the McDonald diagnostic criteria * The participant has a history of infection or may be at risk for infection: * The presence of psychiatric disturbance or substance abuse. * History, clinical evidence, suspicion or significant risk for thromboembolic events, as well as myocardial infarction, stroke, and/or antiphosholipid syndrome and any participants requiring antithrombotic treatment. * Current hypogammaglobulinemia defined by Ig levels below the LLN at Screening or a history of primary hypogammaglobulinemia. * A history or presence of disease that can mimic MS symptoms, such as, but not limited to neuromyelitis optica spectrum disorder, systemic lupus erythematosus, Sjogren's syndrome, acute disseminated encephalomyelitis, and myasthenia gravis. * The participant has had a relapse in the 30 days prior to randomization. * The participant has contraindication for MRI, ie, presence of pacemaker, metallic implants in high risk areas (ie, artificial heart valves, aneurysm/vessel clips), presence of metallic material (eg, shrapnel) in high risk areas, known history of allergy to any contrast medium, or history of claustrophobia that would prevent completion of all protocol scheduled MRI scans. The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.
Where it's running
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University of Alabama at Birmingham- Site Number : 8401135
Birmingham, Alabama, United States Recruiting -
North Central Neurology Associates- Site Number : 8401100
Cullman, Alabama, United States Recruiting -
Alabama Neurology Associates- Site Number : 8400115
Homewood, Alabama, United States Recruiting -
St. Joseph's Hospital and Medical Center- Site Number : 8401139
Phoenix, Arizona, United States Recruiting -
Perseverance Research Center- Site Number : 8401138
Scottsdale, Arizona, United States Recruiting -
Clinical Endpoints- Site Number : 8400050
Scottsdale, Arizona, United States Recruiting
Show 44 more locations
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The Neurology Center of Southern California - Carlsbad- Site Number : 8400023
Carlsbad, California, United States Recruiting -
University of California Irvine - School of Medicine- Site Number : 8401143
Irvine, California, United States Recruiting -
Multiple Sclerosis Center of California - Laguna Hills- Site Number : 8401122
Laguna Hills, California, United States Recruiting -
Chemidox Clinical Trials- Site Number : 8401157
Lancaster, California, United States Recruiting -
Hoag Memorial Hospital Presbyterian- Site Number : 8401031
Newport Beach, California, United States Recruiting -
Private Practice - Dr. Regina Berkovich- Site Number : 8400005
West Hollywood, California, United States Recruiting -
Hartford Healthcare Medical Group- Site Number : 8401069
Norwich, Connecticut, United States Recruiting -
New England Institute for Clinical Research- Site Number : 8400114
Stamford, Connecticut, United States Recruiting -
MedStar Georgetown University Hospital- Site Number : 8400044
Washington D.C., District of Columbia, United States Recruiting -
Neurology of Central Florida- Site Number : 8401147
Altamonte Springs, Florida, United States Recruiting -
Neurology Offices of South Florida - Boca Raton- Site Number : 8401169
Boca Raton, Florida, United States Recruiting -
First Choice Neurology - Espinosa Neuroscience Institute- Site Number : 8401071
Boca Raton, Florida, United States Recruiting -
Nova Clinical Research - Bradenton- Site Number : 8400189
Bradenton, Florida, United States Recruiting -
Mayo Clinic in Florida- Site Number : 8401093
Jacksonville, Florida, United States Recruiting -
Neurology Associates - Maitland- Site Number : 8400010
Maitland, Florida, United States Recruiting -
University of Miami Hospital- Site Number : 8401177
Miami, Florida, United States Recruiting -
Design Neuroscience Center- Site Number : 8401191
Miami Lakes, Florida, United States Recruiting -
Orlando Health Neuroscience Institute - Downtown Pavilion- Site Number : 8400060
Orlando, Florida, United States Recruiting -
Axiom Clinical Research of Florida- Site Number : 8400049
Tampa, Florida, United States Recruiting -
University of South Florida- Site Number : 8400013
Tampa, Florida, United States Recruiting -
Palm Beach Neurology- Site Number : 8401105
West Palm Beach, Florida, United States Recruiting -
Velocity Clinical Research - Savannah Neurology- Site Number : 8400061
Savannah, Georgia, United States Recruiting -
Joi Life Wellness Group LLC- Site Number : 8401192
Smyrna, Georgia, United States Recruiting -
NorthShore Medical Group - Evanston ( Endeavor Health)- Site Number : 8401111
Evanston, Illinois, United States Recruiting -
Consultants in Neurology- Site Number : 8401020
Northbrook, Illinois, United States Recruiting -
Springfield Clinic 1st - 900 Building- Site Number : 8400043
Springfield, Illinois, United States Recruiting -
IU Health Physicians - Fort Wayne - Hope Drive- Site Number : 8400058
Fort Wayne, Indiana, United States Recruiting -
Neuroscience Institute Center- Site Number : 8400053
Merrillville, Indiana, United States Recruiting -
University of Iowa- Site Number : 8400029
Iowa City, Iowa, United States Recruiting -
University of Kansas Medical Center- Site Number : 8400084
Kansas City, Kansas, United States Recruiting -
KC Research Center- Site Number : 8400032
Roeland Park, Kansas, United States Recruiting -
Baptist Health Lexington- Site Number : 8401149
Lexington, Kentucky, United States Recruiting -
Norton Neurology Services- Site Number : 8401103
Louisville, Kentucky, United States Recruiting -
NeuroMedical Clinic of Central Louisiana- Site Number : 8401159
Alexandria, Louisiana, United States Recruiting -
The NeuroMedical Center- Site Number : 8401182
Baton Rouge, Louisiana, United States Recruiting -
Ochsner Medical Center - Jefferson Highway- Site Number : 8400027
New Orleans, Louisiana, United States Recruiting -
International Neurorehabilitation Institute- Site Number : 8400089
Lutherville, Maryland, United States Recruiting -
Boston Clinical Trials- Site Number : 8401178
Boston, Massachusetts, United States Recruiting -
Beth Israel Deaconess Medical Center - Boston- Site Number : 8401041
Boston, Massachusetts, United States Recruiting -
Neurology Center of New England- Site Number : 8401164
Foxborough, Massachusetts, United States Recruiting -
Henry Ford Hospital- Site Number : 8401091
Detroit, Michigan, United States Recruiting -
Michigan Institute for Neurological Disorders- Site Number : 8400004
Farmington Hills, Michigan, United States Recruiting -
M Health Fairview University of Minnesota Medical Center - East Bank- Site Number : 8400056
Minneapolis, Minnesota, United States Recruiting -
Minnesota Center for Multiple Sclerosis- Site Number : 8400073
Plymouth, Minnesota, United States Recruiting
+334 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: Trial Transparency email recommended (Toll free number for US & Canada)
- Email: contact-us@sanofi.com
- Phone: 800-633-1610
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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-
Treadmill-based virtual reality walking training for MS patients
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Virtual Reality and Mental Practice to Improve Balance and Walking in Relapsing MS
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REAL-MS: A Look at Autologous Stem Cell Transplant vs High-Efficacy MS Therapies in Real-World Care
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Tolebrutinib in real-world MS care for patients treated by clinicians
This real-world study sees how tolebrutinib is used for multiple sclerosis patients and what outcomes look like in everyday practice.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.