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A Phase 3 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of DNTH103 in Adults with Chronic Inflammatory Demyelinating Polyneuropathy (CAPTIVATE)

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-517529-26-00
Acronym
DNTH103-CIDP-301
Enrollment
156
Registered
2025-06-10
Start date
2025-08-04
Completion date
Unknown
Last updated
2026-01-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Inflammatory Demyelinating Polyneuropathy

Brief summary

Part B: Time from first dose to relapse as assessed by the adjusted Inflammatory Neuropathy Cause and Treatment (INCAT)

Detailed description

Part B: Time to decrease of ≥ 4 points (centile metric) in Inflammatory Rasch-built Overall Disability Scale (I-RODS) score, Part B: Time to a decrease of ≥ 8 kilopascal (kPa) in grip strength in the dominant hand, Part B: Proportion of participants who relapse as assessed by the adjusted INCAT, Parts A and B: Change in I-RODS score, Parts A and B: Change in grip strength in the dominant hand, Parts A and B: Change in adjusted INCAT Score, Parts A and B: Change in grip strength in the nondominant hand, Parts A and B: Change in Medical Research Council Sum Score (MRC-SS), Part A: Proportion of participants with a confirmed response to DNTH103 as assessed by the adjusted INCAT, Parts A and B: Change in Euro-Quality of Life Visual Analogue Scale (EQ-VAS), Parts A and B: Change in Fatigue Severity Scale (FSS), Parts A and B and OLE: Change in adjusted INCAT score, Part B and OLE: Proportion of participants with a confirmed relapse as assessed by the adjusted INCAT, Parts A, B, OLE, and Safety Follow-up: Incidence of treatment-emergent adverse events (TEAEs) and treatment-emergent serious adverse events (SAEs), Parts A, B, OLE, and Safety Follow-up: Serum concentrations of DNTH103, Parts A, B, and OLE: Change from baseline in complement total blood test (CH50), Parts A, B, OLE, and Safety Follow-up: Incidence and titer of antidrug antibodies (ADAs)

Interventions

DRUGPlacebo matching DNTH103

Sponsors

Dianthus Therapeutics Inc.
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Part B: Time from first dose to relapse as assessed by the adjusted Inflammatory Neuropathy Cause and Treatment (INCAT)

Secondary

MeasureTime frame
Part B: Time to decrease of ≥ 4 points (centile metric) in Inflammatory Rasch-built Overall Disability Scale (I-RODS) score, Part B: Time to a decrease of ≥ 8 kilopascal (kPa) in grip strength in the dominant hand, Part B: Proportion of participants who relapse as assessed by the adjusted INCAT, Parts A and B: Change in I-RODS score, Parts A and B: Change in grip strength in the dominant hand, Parts A and B: Change in adjusted INCAT Score, Parts A and B: Change in grip strength in the nondominant hand, Parts A and B: Change in Medical Research Council Sum Score (MRC-SS), Part A: Proportion of participants with a confirmed response to DNTH103 as assessed by the adjusted INCAT, Parts A and B: Change in Euro-Quality of Life Visual Analogue Scale (EQ-VAS), Parts A and B: Change in Fatigue Severity Scale (FSS), Parts A and B and OLE: Change in adjusted INCAT score, Part B and OLE: Proportion of participants with a confirmed relapse as assessed by the adjusted INCAT, Parts A, B, OLE, and Saf

Countries

Belgium, Bulgaria, Croatia, Denmark, France, Germany, Italy, Latvia, Netherlands, Poland, Romania, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026