CClinicalTrials.gg
Active, not recruitingNCT05902429CLAREMIUpdated Jan 8, 2024

Effects of Oral Cladribine on Remyelination and Inflammation in Multiple Sclerosis Patients

A Phase 4 interventional study of Cladribine 10 mg oral tablet in Multiple Sclerosis, Relapsing-Remitting, sponsored by Pontificia Universidade Católica do Rio Grande do Sul. Active, not recruiting at 1 site in Brazil. Open to participants aged 18 Years to 55 Years. Per ClinicalTrials.gov, last updated 2024-01-08.

Sponsored by Pontificia Universidade Católica do Rio Grande do Sul · Phase 4, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Aug 2024, 2 years 2 months ago, but the record still lists the study as active, not recruiting.
  • Registered 2 years 1 month after the study started (first participant enrolled Apr 2021, registered Jun 2023).
Phase
Phase 4
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
18 Years to 55 Years
Sex
All
01

Study summary

Multiple sclerosis (MS) is a chronic, immune-mediated, demyelinating disease of the central nervous system. Typical brain lesions of the disease may be partially repaired by an endogenous remyelination process which is limited and tends to deplete over the course of the disease. Cladribine tablets are an approved treatment that promotes selective lymphocyte depletion, reducing the inflammatory activity of the disease. The present study is based on the hypothesis that improved inflammatory control through cladribine tablets provides a tissue microenvironment more favorable for remyelination of brain lesions in MS. This hypothesis will be evaluated by a single-arm, open-label, phase IV, single-center, proof-of-concept clinical trial in which 10 participants with relapsing-remitting, highly active MS, relatively early in the course of the disease, will receive conventional treatment with cladribine tablets and will be followed-up for 48 months. Neurological, neuropsychological and magnetic resonance imaging (MRI) parameters will be measured. Remyelination will be assessed by a novel MRI technique called the q-Space myelin map. Additionally, the peripheral blood lymphocyte and cytokine profiles will be evaluated in order to understand the immunological aspects that influence the remyelination capacity in patients treated with cladribine tablets. The study will be conducted in accordance with current regulations governing clinical research in Brazil.

02

Conditions studied

  • Multiple Sclerosis, Relapsing-Remitting

Keywords

  • multiple sclerosis
  • cladribine tablets
  • remyelination
03

In context

Multiple Sclerosis

3,460 studies on the registry are indexed under Multiple Sclerosis; 661 are open to participants now.

This study's enrollment of 10 is below the median of 50 across 2,342 interventional studies indexed under Multiple Sclerosis.

Browse Multiple Sclerosis studies →

Lead sponsor

Pontificia Universidade Católica do Rio Grande do Sul is the lead sponsor of 22 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

Participants who meet all of the following criteria will be included:

  • Consent to participate in the study by signing the ICF;
  • Age between 18 and 55 years, inclusive;
  • Relapsing-remitting multiple sclerosis diagnosed according to 2017 revised McDonald's criteria;
  • Highly active disease, defined as 1) occurrence of ≥2 relapses within 12 months prior to study enrolment, regardless of whether or not treatment with another disease-modifying drugs (DMD) was present; or 2) occurrence of ≥1 relapse in the previous 12 months during treatment with another DMD, together with ≥1 gadolinium-enhanced T1 lesion or ≥9 T2/FLAIR lesions on MRI performed during the same period;
  • Disease duration (time since first relapse) ≤4 years;
  • EDSS score ≤5.0;
  • Eligibility for treatment with cladribine tablets, according to the label approved in Brazil;
  • For women or men of childbearing potential: agreement to use effective contraceptive method as recommended in cladribine tablets label.

Exclusion criteria

Exclusion criteria:

Participants who meet any of the following criteria will be excluded:

  • Contraindications to the use of cladribine tablets (as per the label), including (but not limited to) baseline lymphopenia (\<1,000 cells/ mm³), active neoplasm or neoplasm within the last 5 years, active infections (especially tuberculosis, hepatitis B or C and HIV), latent tuberculosis without proper treatment, moderate to severe renal or hepatic impairment, use of immunosuppressants or immunosuppression for another cause;
  • Pregnancy or lactation;
  • Presence of other medical conditions or current or previous use of another therapy capable of interfering with neurological, neuropsychological, radiological or laboratory evaluation, as per investigator's judgment;
  • Contraindications to MRI or gadolinium use;
  • Inability to adhere to study procedures, as per investigator's judgment.
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (actual)

Study arms

  • Experimental
    Cladribine tablets

    Drug: Cladribine 10 mg oral tablet

Interventions

  • DrugCladribine 10 mg oral tablet

    Cladribine tablets (Mavenclad®, Merck KGaA, Darmstadt, Germany) will be given according to the label with a cumulative dose of 3.5 mg/kg body weight distributed over 2 years as one treatment course of 1.75 mg/kg per year. Each treatment course will consist of 2 weeks of treatment, one at the beginning of the first month and one at the beginning of the second month of the respective year of treatment. Each treatment week will consist of 4 or 5 days in which the participant will receive 10 mg or 20 mg (1 or 2 tablets, respectively) as a single daily dose, depending on body weight, according to the tables available in label. Upon completion of the two treatment courses, no further courses will be required in years 3 and 4.

    Also known as: Mavenclad

06

What researchers measure

Primary outcomes

  1. Proportion of remyelinated lesions (as assessed by neuroradiologist) in q-Space myelin map

    Time frame: 36 months after initiation of cladribine tablets treatment

Secondary outcomes

  1. Median "lesion ratio" (i.e., myelin index: lesion signal / normal appearing white matter signal) in q-Space myelin map

    Time frame: 36 months after initiation of cladribine tablets treatment

  2. Mean signal intensity of lesions in q-Space myelin map

    Time frame: 36 months after initiation of cladribine tablets treatment

  3. Correlation between lymphocyte profile and remyelination parameters in q-Space myelin map

    Time frame: Transversally (at months 0, 12, 24, and 36) and longitudinally (over 36 months following initiation of cladribine tablets treatment)

  4. Correlation between cytokine profile and remyelination parameters in q-Space myelin map

    Time frame: Transversally (at months 0, 12, 24, and 36) and longitudinally (over 36 months following initiation of cladribine tablets treatment)

  5. Correlation between remyelination parameters in q-Space myelin map and evolution of clinical scores (annualized relapse rate, EDSS, MSFC and their subtests)

    Time frame: Over 36 months following initiation of cladribine tablets treatment

  6. Correlation between remyelination parameters in q-Space myelin map and evolution of neuropsychological scores (BICAMS and MFIS subtests)

    Time frame: Over 36 months following initiation of cladribine tablets treatment

07

Study locations

1 site
  • Pontifical Catholic University of Rio Grande do Sul
    Porto Alegre, RS 9061000, Brazil
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 8, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05902429
Lead sponsor
Pontificia Universidade Católica do Rio Grande do Sul
Collaborators
Merck S.A., Brazil, an affiliate of Merck KGaA, Darmstadt, Germany
Responsible party
Sponsor
First posted
Jun 15, 2023
Start date
Apr 28, 2021
Primary completion
Aug 2024 (estimated)
Completion
Aug 2024 (estimated)
Last update
Jan 8, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Jan 2024. You cannot join it, but the record below documents what was studied.

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