NCT06858579 A Study to Evaluate the Efficacy and Safety of DNTH103 in Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CAPTIVATE)
| NCT ID | NCT06858579 |
| Status | Recruiting |
| Phase | Phase 3 |
| Sponsor | Dianthus Therapeutics |
| Condition | Chronic Inflammatory Demyelinating Polyneuropathy |
| Study Type | INTERVENTIONAL |
| Enrollment | 256 participants |
| Start Date | 2025-02-10 |
| Primary Completion | 2028-12-31 |
Eligibility & Interventions
Eligibility Fast-Check
Enter your details for a quick preliminary check. This does not replace medical advice.
What to Expect as a Participant
You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.
Phase 3 trials are large pivotal studies comparing the treatment to current standard of care or placebo. Your participation directly contributes to the evidence needed for regulatory approval.
This trial targets 256 participants in total. It began in 2025-02-10 with a primary completion date of 2028-12-31.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
The purpose of this Phase 3 study is to demonstrate the efficacy of claseprubart (DNTH103) as compared to placebo in participants with chronic inflammatory demyelinating polyneuropathy (CIDP).
Eligibility Criteria
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: motor or multifocal CIDP. Diagnosis must be confirmed by the Independent CIDP Review Panel. 4. CIDP Disease Activity Status (CDAS) score ≥ 3 at screening. 5. Must be neurologically stable. 6. Must have an INCAT score between 2 and 9 inclusive. 7. Must fulfill one of the following treatment conditions for CIDP: 1. Currently treated with and responded to immunoglobulin (Ig) (intravenous immunoglobulin \[IVIg\] or subcutaneous immunoglobulin \[SCIg\]) alone or Ig (IVIg or SCIg) plus oral corticosteroids, or previously treated with and responded to, but are no longer being treated with (eg, lost access to), a maintenance regimen of Ig (IVIg or SCIg) alone or Ig (IVIg or SCIg) plus oral corticosteroids. 2. Currently treated with and responded to oral corticosteroids alone or oral corticosteroids in combination with azathioprine or mycophenolate mofetil. 3. Refractory participants who have had treatment failure (worsening) or an inadequate response to Ig and/or oral corticosteroids (defined as no clinically meaningful improvement after a period of a minimum of 12 weeks, which may include both active treatment and observation to assess response), or who at any time were unable to tolerate these treatments, experienced adverse effects, or have documented contraindications. 4. Treatment naïve with no history of prior treatment for CIDP. 8. Documented vaccinations against encapsulated bacteria in accordance with local requirements and vaccine availability. 9. Female participants must be of nonchildbearing potential or if of childbearing potential, must agree not to donate ova, not to attempt to become pregnant and, if engaging in sexual intercourse with a male partner, must agree to use a highly effective method of contraception. 10. Male participants must agree not to donate sperm and, if engaging in sexual intercourse with a female partner who could become pregnant, must agree to use an acceptable method of contraception or be surgically sterile for at least 90 days prior to Screening. Exclusion Criteria: 1. Clinical signs or symptoms suggestive of polyneuropathy of causes other than CIDP. 2. Known evidence of central demyelination or known history of myelopathy. 3. History or presence of significant medical/surgical condition including any acute illness or major surgery considered to be clinically significant or that could have a potential impact on safety/efficacy or study procedures. 4. Any other condition, including mental illness or prior therapy that would make the participant unsuitable for this study. 5. Known complement deficiency or history of positive titer for anti-C1 antibodies. 6. Diagnosis of systemic lupus erythematosus (SLE) or family history of SLE (defined as a parent, sibling, or child). 7. Participants with an autoimmune disease affecting joints, muscle or nervous system. 8. Any coexisting or overlapping condition, which may interfere with outcome assessments, such as severe diabetic neuropathy, fibromyalgia, inflammatory arthritis or osteoarthritis affecting the hands and feet. 9. Prior history of N. meningitidis infection. 10. History of active malignancy within 5 years prior to screening, except basal cell carcinoma of the skin, curatively resected squamous cell carcinoma of the skin, cervical carcinoma in situ curatively treated or low-grade prostate adenocarcinoma for which appropriate management is observation alone. 11. Positive test results for active human immunodeficiency virus (HIV-1 or HIV-2), hepatitis B surface antigen (HBsAg), or hepatitis C virus (HCV) antibodies.
Contact & Investigator
Frequently Asked Questions
Who can join the NCT06858579 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, up to 75 Years, studying Chronic Inflammatory Demyelinating Polyneuropathy. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
What phase is the NCT06858579 trial and what does that mean for participants?
Phase 3 trials are large-scale studies comparing the new treatment to existing standards of care or a placebo. They provide the evidence needed for regulatory approval. This trial targets 256 participants.
Is NCT06858579 currently recruiting?
Yes, NCT06858579 is actively recruiting participants. Contact the research team at clinicaltrials@dianthustx.com for enrollment information.
Where is the NCT06858579 trial being conducted?
This trial is being conducted at Birmingham, United States, Phoenix, United States, Scottsdale, United States, Los Angeles, United States and 11 additional locations.
Who is sponsoring the NCT06858579 clinical trial?
NCT06858579 is sponsored by Dianthus Therapeutics. The trial plans to enroll 256 participants.