Study to Evaluate Oral BIIB061 Added to Interferon-beta1 (IFN-β1) or Glatiramer Acetate in Relapsing Multiple Sclerosis (RMS)

Biogen

Overview

The primary objectives of the study are to evaluate the safety of BIIB061 versus placebo in participants with Relapsing Multiple Sclerosis (RMS), and to evaluate the efficacy of BIIB061 to improve disability outcome versus placebo in participants with RMS. The secondary objectives of the study are to evaluate the effects of BIIB061 versus placebo on brain magnetic resonance imaging (MRI) markers of remyelination and axon preservation in chronic Multiple Sclerosis lesions and to evaluate the effects of BIIB061 versus placebo on additional measures of improved disability outcome.

BIIB061's unique mechanism of action may provide a pharmacological intervention to overcome the failure of remyelination in all forms of multiple sclerosis by blocking mechanisms that prevent differentiation of oligodendrocytes progenitors.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Conditions

Relapsing Multiple Sclerosis

Interventions

PlaceboDRUG

Administered as specified in the treatment arm.

BIIB061DRUG

Administered as specified in the treatment arm.

Interferon-beta1BIOLOGICAL

Stable dose as prescribed by the physician.

Glatiramer acetate

Eligibility

Sex: ALLMin age: 18 YearsMax age: 55 Years

Medical Language ↔ Plain English

Key Inclusion Criteria: * Diagnosed with relapsing-remitting multiple sclerosis (RRMS) or secondary progressive multiple sclerosis (SPMS) * Have a Baseline Expanded Disability Status Scale (EDSS) score of 2.0 to 6.0 * Have a MS disease duration of ≤20 years from first MS symptom(s) * Must have at least one of the following occurring within 12 months prior to Day 1/Baseline: (a) ≥1 clinical relapse(s) or objective disability worsening (as per treating neurologist's judgment) (b) ≥1 Gadolinium (Gd)-enhancing T1 lesion(s) on brain or spinal cord Magnetic Resonance Imaging (MRI) (c) ≥1 new T2 lesion(s) on brain or spinal cord MRI (the reference scan used to detect new T2 lesion formation has to be ≤12 months prior to Day 1/Baseline) * Must have been taking one of the following disease-modifying therapy (DMTs) at a stable dose for at least 12 weeks prior to Day 1/Baseline: 1. Interferon-beta1 (IFN-β1): Avonex, Plegridy, Betaferon/Betaseron, Extavia, or Rebif 2. Glatiramer acetate (Copaxone or Glatopa). Key Exclusion Criteria: * A documented history of clinically significant persistent neutralizing antibody against IFN-β1 (applicable only for participants entering the study with IFN-β1 as a background DMT), in the opinion of the Investigator * Contraindications to MRI, for example, presence of pacemakers or other implanted metal devices (excluding dental braces), an allergy to Gd, renal impairment, or claustrophobia that cannot be medically managed * History or a positive test result at Screening for human immunodeficiency virus * Current hepatitis C infection (defined as positive hepatitis C virus \[HCV\] antibody and detectable HCV Ribonucleic acid (RNA)). Participants with positive HCV antibody and undetectable HCV RNA are eligible to participate in the study (United States \[US\] Centers for Disease Control and Prevention) * Current hepatitis B infection (defined as positive for hepatitis B surface antigen \[HBsAg\] or total hepatitis B core antibody \[anti-HBc\]). Participants with immunity to hepatitis B from previous natural infection (defined as negative HBsAg, positive anti-HBc, and positive hepatitis B surface antibody \[anti-HBs\]) or vaccination (defined as negative HBsAg, negative anti-HBc, and positive anti-HBs) are eligible to participate in the study * History of systemic hypersensitivity reaction to BIIB061 * History of suicidal ideation or an episode of clinically severe depression (as determined by the Investigator) within 12 weeks of screening * Clinically significant (as determined by the Investigator) 12-lead ECG or laboratory assessment abnormalities * Any condition affecting study treatment absorption (e.g., gastrectomy) * Treatment with statins (3-hydroxy-3-methyl-glutaryl coenzyme A reductase inhibitors) or proprotein convertase subtilisin kexin 9 (PCSK9) inhibitors (e.g., alirocumab and evolocumab) within 8 weeks prior to Day 1/Baseline * Inability or unwillingness to comply with study requirements * Other unspecified reasons that, in the opinion of the Investigator or Biogen that make the participant unsuitable for enrollment. Note: Other protocol defined inclusion/ exclusion criteria may apply.

Outcomes

Primary Outcomes

Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE is any unfavorable and unintended sign (including an abnormal assessment such as an abnormal laboratory value), symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged in hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly.

Time frame: First dose of study drug to end of the study (Up to Week 84)

Overall Disability Response Score (ODRS) at Week 48

ODRS is a multicomponent score based on 4 components: Expanded Disability Status Scale (EDSS), Timed 25-Foot Walk (T25FW), 9-Hole Peg Test in the dominant hand (9HPT-D), and 9HPT in the nondominant hand (9HPT-ND). It assesses overall changes in disability over time. The 4 individual scores are added together to get the overall score that ranges from +4 to -4. At each visit, each component is given a score relative to baseline: -1 if threshold is met for worsening, 0 if no changes meet threshold criteria, or +1 if threshold is met for improvement. The thresholds for T25FW and 9HPT are defined by a 15% change from baseline (≥15% decrease from baseline for improvement and ≥15% increase from baseline for worsening). For EDSS, improvement is defined as a ≥1.0-point decrease in EDSS from a baseline score of ≤6.0, and worsening is defined as a ≥1-point increase from a baseline score of ≤5.5 or a ≥0.5-point increase from a baseline score equal to 6.0.

Time frame: Baseline, Week 48

Secondary Outcomes

Change from Baseline in Normalized Magnetization Transfer Ratio (nMTR) at Week 48

Remyelination will be measured using magnetization transfer ratio (MTR) in chronic MS lesion detected on brain MRI.

Time frame: Baseline, Week 48

Change from Baseline in Diffusion Tensor Imaging Radial Diffusivity (DTI-RD) at Week 48

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.