A Study to Evaluate Efficacy, Safety, and Tolerability of EID of Natalizumab (BG00002) in Participants With RRMS Switching From Treatment With Natalizumab SID in Relation to Continued SID Treatment- Followed by Extension Study Comprising SC and IV Natalizumab Administration

Multiple Sclerosis, Relapsing-Remitting Clinical Trial

Official title: A Randomized, Controlled, Open-Label, Rater-Blinded, Phase 3b Study of the Efficacy, Safety, and Tolerability of 6-Week Extended Interval Dosing (EID) of Natalizumab (BG00002) in Subjects With Relapsing-Remitting Multiple Sclerosis Switching From Treatment With 4-Week Natalizumab Standard Interval Dosing (SID) in Relation to Continued SID Treatment - Followed by an Open-Label Crossover Extension Study Comprising Subcutaneous and Intravenous Natalizumab Administration

Status Completed

Clinical Trial Summary

Part 1: The primary objective is to evaluate the efficacy of natalizumab extended interval dosing (EID) (every 6 weeks [Q6W]) in participants who have previously been treated with natalizumab standard interval dosing (SID) (every 4 weeks [Q4W]) for at least 12 months, in relation to continued Q4W treatment. The secondary objectives is to evaluate relapse-based clinical efficacy measures, disability worsening, additional Magnetic resonance imaging (MRI)-lesion efficacy measures and safety of Q6W in participants who have previously been treated with natalizumab Q4W for at least 12 months, in relation to continued Q4W treatment.

Part 2: The primary objective is to evaluate participant preference for subcutaneous (SC) versus intravenous (IV) route of natalizumab administration. The secondary objectives is to evaluate treatment satisfaction, drug preparation and administration time, safety and immunogenicity, efficacy and characterize pharmacokinetic (PK) and pharmacodynamic (PD) drug preparation and administration time of SC versus IV routes of natalizumab administration.

Clinical Trial Description

This study will be conducted in 2 parts. At the end of part 1, participants who provide consent and are eligible, and newly enrolled participants, will enter part 2, an Open Label Extension comprising a crossover analysis.

Those participants who completed part 1 and cannot participate, or elect not to participate, in Part 2 (Open label extension) will enter a 12-week follow-up. ;

Related Conditions & MeSH terms

• Multiple Sclerosis
• Multiple Sclerosis, Relapsing-Remitting
• Sclerosis

• NCT number: NCT03689972
• Study type: Interventional
• Source: Biogen
• Status: Completed
• Phase: Phase 3
• Start date: November 27, 2018
• Completion date: July 24, 2023