Clinical trial No longer in our active list Phase 3 Interventional Ages 18 to 55

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

PhasePhase 3
Study typeInterventional
Ages18 Years to 55 Years
SexAll
Enrollment1600 (estimated)
SponsorSanofi
Industry-sponsored
Drugs / interventionsfrexalimab
Locations384 sites (Birmingham, Alabama and 383 other locations)
Trial IDNCT06141473 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

  • 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
  • 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

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.