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Study to Evaluate the Efficacy, Safety and Tolerability of IMU-838 in Patients With Relapsing Multiple Sclerosis

A Multi-Center, Randomized, Double-Blinded Phase 3 Study to Evaluate the Efficacy, Safety, and Tolerability of IMU-838 Versus Placebo in Adults With Relapsing Multiple Sclerosis (ENSURE-2)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05201638
Acronym
ENSURE-2
Enrollment
1100
Registered
2022-01-21
Start date
2022-01-12
Completion date
2033-10-01
Last updated
2026-02-23

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

Conditions

Multiple Sclerosis, Relapsing-Remitting

Brief summary

Multi-Center, Randomized, Double-Blinded Phase 3 Study to Evaluate the Efficacy, Safety, and Tolerability of IMU-838 versus Placebo in Adults with Relapsing Multiple Sclerosis (ENSURE-2)

Detailed description

This study will be a multicenter, randomized, double-blind, placebo-controlled study with a blinded Main Treatment Period (MT) and an Open Label Period (OLE) to evaluate the efficacy, safety, and tolerability of IMU-838 in adult patients with RMS. The study will consist of the following periods: Screening Period: Approximately 28 days Main Treatment Period: 72 weeks (approximately 15 months) Open Label Extension Period: Up to approximately 8 years

Interventions

Patients are randomized to IMU-838 or placebo in ratio 1:1

Patients are randomized to IMU-838 or placebo in ratio 1:1

Sponsors

Immunic AG
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 55 Years
Healthy volunteers
No

Inclusion criteria

* Male or female patient (age ≥18 to ≤55 years). * Patients with an established diagnosis of MS according to 2017 McDonald Criteria. * Patients with RMS comprising of relapsing remitting MS (RRMS) and active secondary progressive MS, both defined according to Lublin criteria 1996 and 2014. * Active disease as defined by Lublin 2014 evidenced prior to Screening by: 1. At least 2 relapses in the last 24 months before randomization, or 2. At least 1 relapse in the last 12 months before randomization, or 3. A positive Gd+ MRI scan (brain and/or spine) in the last 12 months prior to randomization. * Willingness and ability to comply with the protocol. * Written informed consent given prior to any study-related procedure.

Exclusion criteria

* Patients with non-active secondary progressive MS and primary progressive MS. * Any disease other than MS that may better explain the signs and symptoms, including history of complete transverse myelitis. * Clinical signs or presence of laboratory findings suggestive for neuromyelitis optica (NMO) spectrum disorders or myelin oligodendrocyte glycoprotein (MOG)-IgG-associated encephalomyelitis * Any active and uncontrolled coexisting autoimmune disease, other than MS (except for type 1 diabetes mellitus and inflammatory bowel disease) * Use of experimental/investigational drug (with the exception of COVID-19 vaccines approved by emergency use authorization) and/or participation in drug clinical studies within 6 months prior to Screening * Previous or current use of MS treatments lifelong, or within a pre-specified time period. * Use of the pre-specified concomitant medications. * Clinically significantly abnormal and pre-specified lab values. * History of chronic systemic infections within 6 months before the date of informed consent. * Diagnosis or suspected liver function impairment, which may cause fluctuating liver function tests during this study. * Known history of nephrolithiasis or underlying condition with a strong association of nephrolithiasis. * History or clinical diagnosis of gout. * History or presence of any major medical or psychiatric illness * Substantial medical condition that could create undue risk to the patient, could affect adherence with the study protocol or could undesirably affect study outcomes

Design outcomes

Primary

MeasureTime frameDescription
To evaluate efficacy of IMU-838 versus placebo based on time to first relapse72 weeksSurvival analysis of time to first relapse, occurred after the start of study treatment administration and before the end of the double-blind period, censored at a maximum of 72 weeks.

Secondary

MeasureTime frameDescription
Effect of IMU-838 versus placebo on volume of new T2 lesions72 weeksTo evaluate the effect of IMU-838 versus placebo on volume of new T2 lesions. Mean difference between IMU-838 and placebo in changes of the volume of new MRI T2 lesions over 24-weeks of treatment in the double-blind period.
Effect of IMU-838 versus placebo on disability progression72 weeksTo evaluate the effect of IMU-838 versus placebo on disability progression. Survival analysis of time to 12-week confirmed disability progression, as measured on Expanded Disability Status Scale during the double-blind period, censored at maximum 72-weeks.
Effect of IMU-838 versus placebo on cognitive performance72 weeksTo evaluate the effect of IMU-838 versus placebo on cognitive performance. Survival analysis of time to confirmed clinically relevant changes on Symbol Digit Modalities Test during the double-blind period, censored at maximum 72- weeks.
Effect of IMU-838 versus placebo on whole brain atrophy72 weeksTo evaluate the effect of IMU-838 versus placebo on whole brain atrophy. Difference in the mean of the percentage change on the whole brain volume between IMU-838 and placebo during the 72-weeks double-blind period.
Safety of IMU-838 versus placebo72 weeksTo evaluate safety and tolerability by assessment of occurrence of Adverse Events.

Countries

Armenia, Bosnia and Herzegovina, Estonia, Germany, India, Peru, Poland, Romania, Serbia, Turkey (Türkiye), Ukraine, United Kingdom, United States

Contacts

PRINCIPAL_INVESTIGATORRobert J. Fox, MD

Mellen Center for MS, Neurological Institute, Cleveland Clinic, Ohio

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 24, 2026