Conditions: Multiple Sclerosis
Keywords: Multiple Sclerosis Oral treatment
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 742
Healthy volunteers: no

Brief summary:
The primary objective of this study was to document the long-term safety and tolerability of teriflunomide in Multiple Sclerosis (MS) participants with relapse.

The secondary objective was to document the long-term efficacy on disability progression, relapse rate and Magnetic Resonance Imaging (MRI) parameters.

Detailed description:
Participants completing the EFC6049 (HMR1726D/3001) study were given the opportunity to continue in the extension study;

* participants receiving teriflunomide 7 mg or 14 mg were blindly maintained on the same dose of teriflunomide.
* participants receiving placebo were randomized at a 1:1 ratio to teriflunomide 7 mg or 14 mg.

The study period per participant was broken down as follows:

* Double-blind treatment: up to a maximum of 288 weeks or until teriflunomide was commercially available in the country where participant lived,
* Post-washout follow-up: 4 weeks after last treatment intake. No post-washout follow up if participant continued on teriflunomide treatment by obtaining its commercial form after end of the study.

The total duration of the extension was 292 weeks (about 6 years) from the first participant enrolled or until teriflunomide is commercially available in the country where participant lived.

Arms:
arm 1: Participants who completed treatment of placebo (for teriflunomide) tablet once daily (QD) for 108 weeks in EFC6049 study, received teriflunomide tablet 7 mg QD for 288 weeks in this extension study. arm 2: Participants who completed treatment of teriflunomide 7 mg tablet QD for 108 weeks in EFC6049 study, continued their treatment with teriflunomide 7 mg tablet QD for 288 weeks in this extension study. arm 3: Participants who completed treatment of placebo (for teriflunomide) tablet QD for 108 weeks in EFC6049, study received teriflunomide 14 mg tablet QD for 288 weeks in this extension study. arm 4: Participants who completed treatment of teriflunomide 14 mg tablet QD for 108 weeks in EFC6049 study, continued their treatment with teriflunomide 14 mg tablet QD for 288 weeks in this extension study.

Interventions: intervention 1: Teriflunomide (HMR1726)
Intervention descriptions: intervention 1: Tablet, oral administration QD.

Protocol document: