Tolebrutinib, a Brain-penetrant Bruton's Tyrosine Kinase Inhibitor, for the Modulation of Chronically Inflamed White Matter Lesions in Multiple Sclerosis
Public ClinicalTrials.gov record NCT04742400. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 2 Clinical Trial of Tolebrutinib, a Brain-penetrant Bruton's Tyrosine Kinase Inhibitor, for the Modulation of Chronically Inflamed White Matter Lesions in Multiple Sclerosis
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Some multiple sclerosis (MS) lesions stay inflamed for very long periods of time. This type of inflammation is not affected by any MS medications. These lesions can lead to slow worsening of MS symptoms. Researchers want to see if a new drug can help. Objective: To see if tolebrutinib can help clear inflammation in MS brain lesions. Eligibility: Adults ages 18 and older with MS who are on an anti-CD20 therapy. Design: Participants will be screened under protocol #89-N-0045. Participants will have a medical history. They will have physical and neurological exams. They will have blood and urine tests. The progression of their MS will be assessed. Participants will have MRIs of the brain. The MRI scanner is shaped like a cylinder. It uses a magnetic field and radio waves to take pictures of the body. During the MRIs, participants will lie on a table that slides in and out of the scanner. Soft padding or a coil will be placed around their head. Participants may have electrocardiograms to measure the heart s electrical activity. Participants may have lumbar punctures ( spinal taps ). A small needle will be inserted into the spinal canal in the lower back. Fluid will be collected. Some participants will take tolebrutinib pills by mouth once a day for at least 96 weeks. They will stop their anti-CD20 therapy. They will have at least 10 study visits. Some participants will not take tolebrutinib. They will stay on their anti-CD20 therapy. They will have 5 study visits. Participation will last at least 96 weeks.
Study identification
- NCT ID
- NCT04742400
- Recruitment status
- Not listed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 12 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years to 120 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Apr 14, 2021
- Primary completion
- Jun 14, 2023
- Completion
- Dec 30, 2025
- Last update posted
- Aug 12, 2024
2021 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04742400, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 12, 2024 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04742400 live on ClinicalTrials.gov.