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empasiprubart

Phase 3

Chronic Inflammatory Demyelinating Polyneuropathy | Monoclonal antibody | Neurology |argenx SE|Last Updated: Jul 22, 2026

Success Probability
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Trial Design
RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials2
Total Enrollment378
FDA Designations
No designations recorded
Clinical trial landscape

empasiprubart · 7 trials · 14 indications

Phase 3 3Phase 2 3Phase 1 1
NCT07091630A Study to Assess the Efficacy and Safety of Empasiprubart in Adults With CIDPChronic Inflammatory Demyelinating Polyneuropathy
RECRUITING160 Analytics
NCT06920004A Study to Assess Efficacy and Safety of Empasiprubart Versus IVIg in Adults With CIDPChronic Inflammatory Demyelinating Polyneuropathy
RECRUITING218 Analytics
NCT06742190A Study to Assess the Efficacy and Safety of Empasiprubart Versus IVIg in Adults With Multifocal Motor NeuropathyMultifocal Motor Neuropathy (MMN)
ACTIVE NOT_RECRUITING154 Analytics
PHASE3RECRUITING
A Study to Assess the Efficacy and Safety of Empasiprubart in Adults With CIDP
Chronic Inflammatory Demyelinating PolyneuropathyUnlock trial analytics
PHASE3RECRUITING
A Study to Assess Efficacy and Safety of Empasiprubart Versus IVIg in Adults With CIDP
Chronic Inflammatory Demyelinating PolyneuropathyUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Study to Assess the Efficacy and Safety of Empasiprubart Versus IVIg in Adults With Multifocal Motor Neuropathy
Multifocal Motor Neuropathy (MMN)Unlock trial analytics
Study Endpoints
Primary Endpoints
Reduction of ≥1 point compared with baseline in aINCAT score at week 24
Up to 24 weeks

The Adjusted Inflammatory Neuropathy Cause and Treatment Disability Score (aINCAT) score is a 10-point scale that covers the functionality of legs and arms. The score varies between 0 and 10 (higher score, worse outcome).

Change from baseline in grip strength (4-week average) in the most affected hand at week 24
Up to 24 weeks
Empasiprubart serum concentrations as input for a population PK-driven analysis to determine the effect of age and body size on CL and Vd
Up to 8 weeks

CL = Clearance; Vd = apparent volume of distribution.

Free and total C2 levels as input for PK/PD modeling analysis
Up to 8 weeks

C2 = complement component 2.

Incidence of adverse events and serious adverse events in the DBTP
Up to 12 weeks
Incidence of adverse events (AEs)
Up to 90 weeks
Percentage of participants discontinuing investigational medicinal product (IMP) due to an adverse event (AE)
Up to 25 weeks
Change from baseline in nerve CSA at week 24 as measured by ultrasound imaging of the median nerve and brachial plexus (individual nerves and average sum score)
Up to 48 weeks

CSA : cross-sectional area

Secondary Endpoints
Change from baseline in I-RODS centile points score
Up to 24 weeks (part A) + 96 weeks (Part B)
Change from baseline in MRC-SS at week 24
Up to 24 weeks
Change from baseline in grip strength (3-day moving average) in the dominant hand at week 24
Up to 24 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part A - EmpasiprubartEXPERIMENTALParticipants receive empasiprubart during part A
Part A - PlaceboPLACEBO_COMPARATORParticipants receive placebo during part A
Part B - EmpasiprubartEXPERIMENTALParticipants receive empasiprubart during part B. Participants from the empasiprubart arm in part A will receive placebo once to maintain the blind of part A.
Part A - empasiprubart + IVIg-placeboEXPERIMENTALDuring Part A, participants receive empasiprubart and a placebo resembling the IVIg treatment in this arm.
Part A - IVIg + empasiprubart-placeboACTIVE_COMPARATORDuring Part A, participants receive IVIg and a placebo resembling the empasiprubart treatment in this arm.
Empasiprubart IVEXPERIMENTALParticipants will receive empasiprubart IV
Placebo IVPLACEBO_COMPARATORParticipants receive placebo IV in the DBTP
Efgartigimod PH20 SC PFSOTHERParticipants receive open-label efgartigimod PH20 SC PFS in the safety follow-up period
EmpasiprubartEXPERIMENTALPatients receiving Empasiprubart IV
PlaceboPLACEBO_COMPARATORPatients receiving Placebo IV
Interventions
NameTypeDescription
Empasiprubart IVBIOLOGICALIntravenous infusion of empasiprubart
Placebo IVOTHERIntravenous infusion of placebo
empasiprubartBIOLOGICALIntravenous infusion of empasiprubart
IVIgBIOLOGICALIntravenous infusion of IVIg
empasiprubart-placeboOTHERA placebo resembling the empasiprubart treatment
IVIg-placeboOTHERA placebo resembling the IVIg treatment
IVIG (Intravenous Immunoglobulin)BIOLOGICALIntravenous infusion of IVIg
Efgartigimod PH20 SC PFSCOMBINATION_PRODUCTSubcutaneous administration of efgartigimod PH20 via pre-filled syringe (PFS)
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Eligibility Criteria
Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites71

Inclusion Criteria: * Meets criteria for CIDP based on EAN/PNS Task Force CIDP guidelines, second revision (2021) * Has either typical CIDP or 1 of the following CIDP variants: motor CIDP (including motor-predominant CIDP), multifocal CIDP (also known as Lewis-Sumner syndrome), focal CIDP, or dista...

Countries:United StatesArgentinaAustriaBrazilBulgariaChinaCzechiaDenmarkEstoniaFranceGeorgiaGreeceHungaryItalyJapanMoldovaNetherlandsPolandRomaniaSingaporeSlovakiaSouth KoreaUnited KingdomColombiaGermanyIsraelNorwayPortugalSerbiaSloveniaSpainSwedenSwitzerlandTurkey (Türkiye)AustraliaBelgiumCanadaLatviaLithuania
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Recent Changes (Last 90 Days)
LOWJul 22, 2026NCT07091630lastUpdatePostDate: changed
LOWJul 22, 2026NCT07091630lastUpdatePostDate: changed
LOWJul 21, 2026NCT06920004lastUpdatePostDate: changed
LOWJun 29, 2026NCT07673627NEW_TRIAL: changed
LOWJun 29, 2026NCT07673627NEW_TRIAL: changed
LOWJun 12, 2026NCT07091630lastUpdatePostDate: changed
LOWJun 12, 2026NCT06920004lastUpdatePostDate: changed
LOWJun 12, 2026NCT07091630lastUpdatePostDate: changed
LOWJun 12, 2026NCT06920004lastUpdatePostDate: changed
LOWJun 10, 2026NCT07638566NEW_TRIAL: changed
LOWJun 10, 2026NCT07638566NEW_TRIAL: changed
LOWMay 29, 2026NCT07091630lastUpdatePostDate: changed
LOWMay 29, 2026NCT07610564NEW_TRIAL: changed
LOWMay 29, 2026NCT07091630lastUpdatePostDate: changed
LOWMay 29, 2026NCT07610564NEW_TRIAL: changed
LOWMay 29, 2026NCT07091630lastUpdatePostDate: changed
LOWMay 29, 2026NCT07610564NEW_TRIAL: changed
LOWMay 26, 2026NCT06920004primaryCompletionDate: changed
LOWMay 26, 2026NCT07091630primaryCompletionDate: changed
LOWMay 26, 2026NCT06284954primaryCompletionDate: changed