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A Study to Evaluate Efficacy, Safety, and Tolerability of 6-Week Extended Interval Dosing of Natalizumab (BG00002) in Participants With Relapsing-Remitting Multiple Sclerosis (RRMS) Switching From Treatment With 4-Week Natalizumab Standard Interval Dosing (SID) in Relation to Continued SID Treatment

Phase 1
Conditions
Relapsing-remitting multiple sclerosis (RRMS)
MedDRA version: 21.1Level: PTClassification code 10063399Term: Relapsing-remitting multiple sclerosisSystem Organ Class: 10029205 - Nervous system disorders
Therapeutic area: Diseases [C] - Nervous System Diseases [C10]
Registration Number
EUCTR2018-002145-11-DE
Lead Sponsor
Biogen Idec Research Limited
Brief Summary

Not available

Detailed Description

Not available

Recruitment & Eligibility

Status
ot Recruiting
Sex
All
Target Recruitment
480
Inclusion Criteria

• Ability of the participant to understand the purpose and risks of the study and provide signed and dated
informed consent and authorization to use confidential health information in accordance with national and local participant privacy regulations.
• Diagnosis of relapsing remitting multiple sclerosis (RRMS) according to the McDonald criteria [Thompson
2018].
• Treatment with natalizumab as disease-modifying monotherapy for RRMS that is consistent with the
approved dosing for a minimum of 12 months prior to randomization. The participant must have received at
least 11 doses of natalizumab in the 12 months prior to randomization with no missed doses in the 3 months
prior to randomization.
• Expanded Disability Status Scale (EDSS) <=5.5 at screening.
• No relapses in the last 12 months prior to randomization, as determined by the enrolling Investigator

NOTE: Other protocol-defined inclusion criteria may apply.
Are the trial subjects under 18? no
Number of subjects for this age range:
F.1.2 Adults (18-64 years) yes
F.1.2.1 Number of subjects for this age range 480
F.1.3 Elderly (>=65 years) no
F.1.3.1 Number of subjects for this age range

Exclusion Criteria

• Primary and secondary progressive multiple sclerosis (MS).
• MRI positive for Gd-enhancing lesions at screening.
• Participants for whom MRI is contraindicated (e.g., have a contraindicated pacemaker or other contraindicated implanted metal device, have suffered, or are at risk for, side effects from Gd, or have claustrophobia that cannot be medically managed).
• History of any clinically significant (as determined by the Investigator) cardiac, endocrinologic, hematologic, hepatic, immunologic, metabolic (including diabetes), urologic, pulmonary, neurologic (except for RRMS), dermatologic, psychiatric, renal, or other major disease that would preclude participation in a clinical
study, in the opinion of the Investigator.
• Presence of anti-natalizumab antibodies at screening.

NOTE: Other protocol-defined exclusion criteria may apply.

Study & Design

Study Type
Interventional clinical trial of medicinal product
Study Design
Not specified
Primary Outcome Measures
NameTimeMethod
Secondary Outcome Measures
NameTimeMethod
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