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Frexalimab

Phase 3

Multiple Sclerosis | Small molecule | Neurology |Sanofi|Last Updated: Aug 14, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment2,758

FDA Designations

No designations recorded

Clinical trial landscape

Frexalimab · 6 trials · 5 indications

Phase 3 3Phase 2 3
NCT07325292Non-inferiority Study of Frexalimab Subcutaneous Administration Compared to Intravenous Administration in Adult Participants With Multiple SclerosisMultiple Sclerosis
RECRUITING160 Analytics
NCT06141486Efficacy and Safety Study of Frexalimab (SAR441344) in Adults With Nonrelapsing Secondary Progressive Multiple SclerosisMultiple Sclerosis
ACTIVE NOT_RECRUITING943 Analytics
NCT06141473Efficacy and Safety Studies of Frexalimab (SAR441344) in Adults With Relapsing Forms of Multiple SclerosisMultiple Sclerosis
ACTIVE NOT_RECRUITING1,655 Analytics
PHASE3RECRUITING
Non-inferiority Study of Frexalimab Subcutaneous Administration Compared to Intravenous Administration in Adult Participants With Multiple Sclerosis
Multiple SclerosisUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Efficacy and Safety Study of Frexalimab (SAR441344) in Adults With Nonrelapsing Secondary Progressive Multiple Sclerosis
Multiple SclerosisUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Efficacy and Safety Studies of Frexalimab (SAR441344) in Adults With Relapsing Forms of Multiple Sclerosis
Multiple SclerosisUnlock trial analytics

Study Endpoints

Primary Endpoints

Area under the curve over the interval W20 to W24(part A)
Until Week 24

AUCW20-W24

Trough concentration at steady state(part A)
Until Week 24

Ctrough,SS

Time to onset of composite confirmed disability progression (cCDP) confirmed over 6 months in the double-blind treatment period
Up to 36 months

Defined as Increase from the baseline expanded disability status scale (EDSS) score of ≥1.0 point when the baseline is \<5.5, or ≥0.5 point when the baseline is ≥5.5, OR Increase of ≥20% from the baseline time in the 9 hole peg test (9HPT),OR Increase of ≥20% from the baseline time in the timed 25 foot walk (T25FW) test

Annualized relapse rate (ARR) during the study period assessed by protocol defined adjudicated relapses
Until Week 156

ARR during the study period assessed by protocol-defined adjudicated relapses. This endpoint will be analyzed in the ITT population of each study using a negative binomial model with the total number of adjudicated relapses per participant occurring during the observation period as the response variable and with terms for treatment group, Gd-enhancing T1 lesions at baseline (presence, absence), EDSS strata (\<4, ≥4), and geographical region (US, non-US).

Composite efficacy failure rate (BPAR, graft loss, and death) by 1 year post kidney transplantation
by 1 year

BPAR is defined as biopsy confirmed T cell mediated and antibody mediated rejection as categorized by BANFF 2022; graft loss is defined as the first date the patients meet any of the following criteria: chronic dialysis for a least 56 days, day of allograft nephrectomy, or day of re-transplant.

Percent reduction in urine protein to creatinine ratio (UPCR)
From baseline to Week 12
Change in mean 2h mixed meal tolerance test (MMTT) stimulated C-peptide concentration, calculated from AUC from baseline to W52 for Part B (12-21 y.o.)
Baseline to Week 52

mixed meal tolerance test (MMTT) stimulated C-peptide concentration is to be calculated from AUC

Change in mean 2h mixed meal tolerance test (MMTT) stimulated C-peptide concentration, calculated from AUC from baseline to W26 for Part C (6-11 y.o.)
Baseline to Week 26

mixed meal tolerance test (MMTT) stimulated C-peptide concentration is to be calculated from AUC

Secondary Endpoints

Frexalimab plasma concentrations over time (part A for IV Arm Part A, B, C for SC arm)
Until Week 24 for IV arm, Until EOS for SC arm ( until Week 96)
Pharmacokinetic parameters: Cmax(part A)
Until Week 24
Pharmacokinetic parameters: Tmax(part A)
Until Week 24
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Frexalimab SCEXPERIMENTALFrexalimab SC (home self-administration via on-body delivery system(OBDS), is allowed from the beginning of Part B after appropriate training and participant and Investigator agreement)
Frexalimab IVEXPERIMENTALFrexalimab IV
FrexalimabEXPERIMENTALFrexalimab IV administration
PlaceboPLACEBO_COMPARATORMatching placebo
TeriflunomideACTIVE_COMPARATORParticipants will receive teriflunomide tablet and placebo infusion.
TacrolimusACTIVE_COMPARATORTacrolimus
BrivekimigEXPERIMENTALBrivekimig active dose
RilzabrutinibEXPERIMENTALRilzabrutinib active dose
Frexalimab Dose 1EXPERIMENTAL -
Frexalimab Dose 2EXPERIMENTAL -
Frexalimab Dose 3EXPERIMENTAL -

Interventions

NameTypeDescription
FrexalimabDRUGPharmaceutical form:Solution for injection-Route of administration:SC injection
MRI contrast-enhancing preparationsDRUGRoute of administration:IV injection
PlaceboDRUGSolution for IV infusion
MRI contrast-enhancing agentsDRUGIV, as per respective label
TeriflunomideDRUGAubagio oral tablet
Placebo infusionDRUGSolution for IV infusion
Placebo tabletDRUGOral tablet
CholestyramineDRUGoral, 8 g 3 times daily for 11 days for accelerated elimination procedure (4 g 3 times daily for 11 days in case of intolerance). The teriflunomide local label should be followed.
Activated charcoalDRUGoral, 50 g every 12 hours for 11 days for accelerated elimination procedure. The teriflunomide local label should be followed.
TacrolimusDRUGPharmaceutical form:Capsule-Route of administration:Oral
rabbit anti-thymocyte globulinDRUGPharmaceutical form:Solution for injection-Route of administration:IV
mycophenolate mofetilDRUGPharmaceutical form:Tablet or capsule-Route of administration:Oral
mycophenolate sodiumDRUGPharmaceutical form:Tablet-Route of administration:Oral
methylprednisoloneDRUGPharmaceutical form:Solution for injection-Route of administration:IV
prednisoneDRUGPharmaceutical form:Tablet-Route of administration:Oral
brivekimigDRUGbrivekimig treatment
rilzabrutinibDRUGrilzabrutinib treatment
InsulinDRUGSC injection, dose and frequency will be established and/or adjusted by investigator
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Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersNo
Study Sites38

Inclusion Criteria: The participant must qualify for inclusion per either Group A or B criteria as detailed below, meeting all the inclusion criteria of the applicable group: Group A (RMS) * The participant must be 18 to 55 years of age, inclusive, at the time of signing the informed consent. * T...

Countries:United StatesBelgiumChinaItalyJapanArgentinaAustraliaBrazilBulgariaCanadaChileCzechiaFranceGermanyGreeceHungaryIndiaNetherlandsPolandPortugalSaudi ArabiaSouth KoreaSpainSwedenTurkey (Türkiye)UkraineUnited KingdomAustriaCroatiaDenmarkHong KongIsraelLithuaniaMalaysiaMexicoPuerto RicoRomaniaSingaporeSlovakiaSouth AfricaSwitzerlandTaiwanThailandUnited Arab EmiratesFinlandSlovenia
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Recent Changes (Last 90 Days)

LOWAug 14, 2026NCT07325292lastUpdatePostDate: changed
LOWAug 14, 2026NCT07325292lastUpdatePostDate: changed
LOWAug 5, 2026NCT07325292lastUpdatePostDate: changed
LOWJul 20, 2026NCT06500702lastUpdatePostDate: changed
LOWJul 20, 2026NCT06141473lastUpdatePostDate: changed
LOWJul 20, 2026NCT06500702lastUpdatePostDate: changed
LOWJul 20, 2026NCT06141473lastUpdatePostDate: changed
MEDIUMJun 29, 2026NCT06111586Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMJun 29, 2026NCT06111586Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWJun 23, 2026NCT07412470lastUpdatePostDate: changed
LOWJun 23, 2026NCT07325292lastUpdatePostDate: changed
LOWJun 23, 2026NCT07412470lastUpdatePostDate: changed
LOWJun 23, 2026NCT07325292lastUpdatePostDate: changed
LOWJun 8, 2026NCT06500702lastUpdatePostDate: changed
LOWJun 8, 2026NCT06500702lastUpdatePostDate: changed
LOWJun 8, 2026NCT06500702lastUpdatePostDate: changed

Frequently asked questions about Frexalimab

What is Frexalimab used for?

Frexalimab is an investigational drug being studied for kidney transplant rejection, type 1 diabetes mellitus, multiple sclerosis, and focal segmental glomerulosclerosis. It is currently in Phase 2 and Phase 3 clinical trials for these conditions, with multiple sclerosis being the most advanced area of development.

What does Frexalimab target?

Frexalimab is a monoclonal antibody, indicated by its -mab suffix. It is being developed by Sanofi for autoimmune and inflammatory conditions. The specific molecular target is not disclosed in available information, but its mechanism involves antibody-mediated modulation of the immune system.

Who makes Frexalimab?

Frexalimab is being developed by Sanofi, a global biopharmaceutical company listed on the stock exchange under the ticker SNY. Sanofi is conducting multiple clinical trials to evaluate the drug's safety and efficacy across several indications.

What phase is Frexalimab in?

Frexalimab is in Phase 2 and Phase 3 clinical development. It is not FDA approved and remains investigational. Phase 3 trials are active for relapsing forms of multiple sclerosis and nonrelapsing secondary progressive multiple sclerosis, while a Phase 2 trial is studying type 1 diabetes.

What clinical trials is Frexalimab in?

Frexalimab is being studied in four clinical trials. NCT06111586 is a Phase 2 trial in type 1 diabetes. NCT06141473 and NCT06141486 are Phase 3 trials in multiple sclerosis. NCT07325292 is a Phase 3 non-inferiority study comparing subcutaneous and intravenous administration in multiple sclerosis.

Is Frexalimab the same as SAR441344?

Yes, Frexalimab is also known as SAR441344. Clinical trial titles refer to the drug as Frexalimab (SAR441344), confirming that both names identify the same investigational compound being developed by Sanofi.