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Masitinib in the Treatment of Patients With Primary Progressive or Non-active Secondary Progressive Multiple Sclerosis

A 96-Week, Prospective, Multicenter, Randomised, Double-Blind, Placebo-Controlled, Phase 3 Study to Compare Efficacy and Safety of Masitinib Dose Titration to 4.5 mg/kg/Day Versus Placebo in the Treatment of Patients With Primary Progressive or Secondary Progressive Multiple Sclerosis Without Relapse

Status
Suspended
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05441488
Acronym
MAXIMS
Enrollment
800
Registered
2022-07-01
Start date
2022-06-28
Completion date
2028-12-01
Last updated
2026-05-06

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

Conditions

Progressive Multiple Sclerosis

Keywords

Primary progressive MS, Non-active secondary progressive MS, Tyrosine kinase inhibitor, PPMS, SPMS

Brief summary

To evaluate the efficacy and safety of oral masitinib versus placebo in the treatment of patients with primary progressive or secondary progressive multiple sclerosis without relapse.

Detailed description

Masitinib is a selective tyrosine kinase inhibitor, targeting innate immune cells (mast cells and microglia) that are involved in the pathophysiology of progressive multiple sclerosis (MS). This is a multicenter, double-blind, randomized, placebo-controlled, comparative study of oral masitinib in the treatment of patients with progressive MS who were progressing but not clinically active.

Interventions

DRUGPlacebo

treatment per os

Masitinib (titration to 4.5 mg/kg/day)

Sponsors

AB Science
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

Main inclusion criteria include: * Patients with either primary progressive or secondary progressive multiple sclerosis with onset of symptoms at least five years before baseline and with no relapse diagnosed according to the 2017 revised McDonald's criteria at least two years before screening * Patients with Expanded Disability Status Scale (EDSS) score between 3.0 to 6.0 (both inclusive) at screening and baseline * Patients with an EDSS score progression ≥1 point with no improvement during 2 years * Absence of T1 Gadolinium-enhancing brain lesions as measured by MRI at screening Main

Exclusion criteria

include: * Patients suffering from a disease other than MS that would better explain the patient's neurological clinical signs and symptoms and/or MRI lesions observed at screening * Inability to complete screening MRI (contraindications for MRI) and/or any known allergy or hypersensitivity or any contra-indication to gadolinium macrocyclic * Patients treated with other disease modifying treatments in the time frames and conditions mentioned under previous treatment wash out period, assessed at baseline * Patients with lymphocytes \<1.0 × 10\^9/L at screening and at baseline

Design outcomes

Primary

MeasureTime frameDescription
Time to confirmed progression96 weeksTime to disability progression, confirmed by two consecutive visits, wherein progression of disability is measured by the Expanded Disability Status Scale (EDSS) with progression defined as a 1-point worsening for baseline EDSS score ≤5.5, or 0.5-point worsening for baseline EDSS score \>5.5. The Expanded Disability Status Scale (EDSS) is a method of quantifying disability in multiple sclerosis and monitoring changes in the level of disability over time. The EDSS provides a total score on a scale that ranges from 0 to 10, in 0.5-point increments, with higher scores indicating greater disability. The first levels 1.0 to 4.5 refer to people with a high degree of ambulatory ability and the subsequent levels 5.0 to 9.5 refer to the loss of ambulatory ability.

Secondary

MeasureTime frameDescription
Time to Expanded Disability Status Scale (EDSS) score of 7.096 weeksTime to reach EDSS score of 7 from baseline up to week 96, wherein EDSS score of ≥7.0 represents wheelchair dependency. The Expanded Disability Status Scale (EDSS) is a method of quantifying disability in multiple sclerosis and monitoring changes in the level of disability over time. The EDSS provides a total score on a scale that ranges from 0 to 10, in 0.5-point increments, with higher scores indicating greater disability. The first levels 1.0 to 4.5 refer to people with a high degree of ambulatory ability and the subsequent levels 5.0 to 9.5 refer to the loss of ambulatory ability.
Overall Change in Expanded Disability Status Scale (EDSS) Score96 weeksChange from baseline on the EDSS, calculated using repeated measures methodology on all time points measured over 96 weeks (i.e., a population-averaged score comprising consecutive data points from each patient). The Expanded Disability Status Scale (EDSS) is a method of quantifying disability in multiple sclerosis and monitoring changes in the level of disability over time. The EDSS provides a total score on a scale that ranges from 0 to 10, in 0.5-point increments, with higher scores indicating greater disability. The first levels 1.0 to 4.5 refer to people with a high degree of ambulatory ability and the subsequent levels 5.0 to 9.5 refer to the loss of ambulatory ability.
Brain Magnetic Resonance Imaging Assessments96 weeksChange in baseline brain volume and lesions will be measured and assessed
Multiple Sclerosis Quality of Life (MSQOL)-5496 weeksChange in quality of life assessment instrument MSQOL-54 The MS Quality of Life Instrument (MSQoL-54) is a structured self-report questionnaire that is used to assess the impact of MS on the individual's well-being. It consists of 52 items combined in 12 subscales, and two single items. Higher scores indicate a better quality of life.

Countries

France, Greece, Italy, Poland, Russia, Spain, Sweden, Ukraine

Contacts

PRINCIPAL_INVESTIGATORPatrick VERMERSCH, MD, PhD

University of Lille, CHU of Lille, France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 7, 2026