Brain and Nerves

This randomized, parallel group, double-blind, placebo controlled study will evaluate the efficacy and safety of ocrelizumab in participants with primary progressive multiple sclerosis. Eligible participants will be randomized 2 : 1 to receive either ocrelizumab or placebo. The blinded treatment period will be at least 120 weeks, followed by an Open Label Extension (OLE) treatment for participants in both groups who in the opinion of the investigator could benefit from further or newly initiated ocrelizumab treatment.

The purpose of this study is to collect long-term safety and tolerability, long-term efficacy, and health outcome data in all patients currently ongoing in the fingolimod multiple sclerosis clinical development program. This study will combine all currently ongoing Phase II and III fingolimod extension studies as well as ongoing and newly planned studies into one single long-term extension protocol that will provide patients with continuous treatment and will continue until fingolimod is registered, commercially available, and reimbursed in the respective countries.