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Claseprubart

Phase 3

Chronic Inflammatory Demyelinating Polyneuropathy | Small molecule | Neurology |Dianthus Therapeutics, Inc.|Last Updated: Jun 2, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment256
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06858579A Study to Evaluate the Efficacy and Safety of DNTH103 in Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CAPTIVATE)PHASE3 RECRUITING 256Feb 10, 2025Dec 31, 2030Jun 2, 2026168 United States, Argentina +25
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Study Endpoints
Primary Endpoints
Part B: Time From First Dose to Relapse as Assessed by the Adjusted Inflammatory Neuropathy Cause and Treatment (INCAT)
Part B baseline to Part B end of treatment period (up to Week 52)

Adjusted INCAT scores range from 0-10 with a score of 10 indicating the greatest degree of disability. A relapse is defined as an increase of ≥1 point from baseline in adjusted INCAT score.

Secondary Endpoints
Part B: Time to Decrease of ≥ 4 Points (Centile Metric) in Inflammatory Rasch-built Overall Disability Scale (I-RODS) Score
Part B baseline to Part B end of treatment period (up to Week 52)
Part B: Time to Decrease of ≥ 8 kilopascal (kPa) in Grip Strength in the Dominant Hand
Part B baseline to Part B end of treatment period (up to Week 52)
Part B: Percentage of Participants who Relapse as Assessed by the Adjusted INCAT
Part B baseline to end of treatment period for Part B (up to Week 52)
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Claseprubart (Part A)EXPERIMENTALClaseprubart intravenous (IV) loading dose on Day 1. Claseprubart subcutaneous (SC) once every 2 weeks for up to 13 weeks.
Claseprubart (Part B)EXPERIMENTALClaseprubart SC once every 2 weeks for up to 52 weeks.
Placebo (Part B)PLACEBO_COMPARATORPlacebo SC once every 2 weeks for up to 52 weeks.
Claseprubart (Optional OLE)EXPERIMENTALClaseprubart SC once every 2 weeks for up to 104 weeks.
Interventions
NameTypeDescription
ClaseprubartDRUGIV Infusion
PlaceboDRUGSC injection
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Eligibility Criteria
Age Range18 Years — 75 Years
SexALL
Healthy VolunteersNo
Study Sites168

Inclusion Criteria: 1. Must have given written informed consent before any study-related activities are carried out. 2. Weight range between 40 kilograms (kg) and 120 kg. 3. Confirmed diagnosis of CIDP or possible CIDP. Participants must have either typical CIDP or one of the following variants: mo...

Countries:United StatesArgentinaAustraliaBelgiumBrazilBulgariaChinaColombiaCroatiaDenmarkFranceGeorgiaGermanyIsraelItalyLatviaMalaysiaNetherlandsNorth MacedoniaPhilippinesPolandRomaniaSerbiaSouth KoreaSpainThailandUnited Kingdom
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Recent Changes (Last 90 Days)
LOWJun 2, 2026NCT06858579lastUpdatePostDate: changed
LOWJun 2, 2026NCT06858579lastUpdatePostDate: changed
LOWJun 2, 2026NCT06858579lastUpdatePostDate: changed
HIGHMay 26, 2026NCT06858579Enrollment: 480 → 256
LOWMay 24, 2026NCT06858579studyFirstPostDate: changed