RECRUITING

A Study to Evaluate the Efficacy and Safety of DNTH103 in Adults With Chronic Inflammatory Demyelinating Polyneuropathy (CAPTIVATE)

Conditions

Chronic Inflammatory Demyelinating Polyneuropathy

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Study Overview

This clinical trial focuses on testing the efficacy of different digital interventions to promote re-engagement in cancer-related long-term follow-up care for adolescent and young adult (AYA) survivors of childhood cancer.

Description

The purpose of this Phase 3 study is to demonstrate the efficacy of DNTH103 as compared to placebo in participants with chronic inflammatory demyelinating polyneuropathy (CIDP).

Official Title

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)

Quick Facts

Study Start:2025-02-10

Study Completion:2030-12-31

Study Type:Not specified

Phase:Not Applicable

Enrollment:Not specified

Status:RECRUITING

Study ID

NCT06858579

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Ages Eligible for Study:18 Years to 75 Years

Sexes Eligible for Study:ALL

Accepts Healthy Volunteers:No

Standard Ages:ADULT, OLDER_ADULT

Inclusion Criteria	Exclusion 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 (ie, no relapses or other neurological events that could affect examinations). 6. Must have an adjusted 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 either no longer have access to or are no longer being treated with, 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, or previously treated with and responded to, but no longer have access to, oral corticosteroids. 3. Refractory participants who have had failure (worsened) or an inadequate response (defined as no clinically meaningful improvement after treatment for a minimum of 12 weeks on Ig and/or oral corticosteroids) or are unable to tolerate these treatments due to side effects. 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 be surgically sterile for at least 90 days prior to Screening or 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.	1. Clinical signs or symptoms suggestive of polyneuropathy of other causes, such as inflammatory neuropathies. 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. Diagnosis of an autoimmune disorder other than CIDP. 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.

Inclusion Criteria

Exclusion 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 (ie, no relapses or other neurological events that could affect examinations).
6. Must have an adjusted 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 either no longer have access to or are no longer being treated with, 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, or previously treated with and responded to, but no longer have access to, oral corticosteroids.
3. Refractory participants who have had failure (worsened) or an inadequate response (defined as no clinically meaningful improvement after treatment for a minimum of 12 weeks on Ig and/or oral corticosteroids) or are unable to tolerate these treatments due to side effects.
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 be surgically sterile for at least 90 days prior to Screening or 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.

1. Clinical signs or symptoms suggestive of polyneuropathy of other causes, such as inflammatory neuropathies.
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. Diagnosis of an autoimmune disorder other than CIDP.
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.

Contacts and Locations

Study Contact

Dianthus Clinical Contact Center

CONTACT

929-999-4055

clinicaltrials@dianthustx.com

Study Locations (Sites)

Texas Locations

Houston, Texas, 77054

United States

Collaborators and Investigators

Sponsor: Dianthus Therapeutics

Study Record Dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

Study Start Date2025-02-10

Study Completion Date2030-12-31

Study Record Updates

Study Start Date2025-02-10

Study Completion Date2030-12-31

Terms related to this study

Additional Relevant MeSH Terms

Chronic Inflammatory Demyelinating Polyneuropathy