Conditions: Multiple Sclerosis, Relapsing-Remitting
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 220
Healthy volunteers: no

Brief summary:
This is a phase II, multicenter, randomized, parallel-group, partially blinded, placebo and Avonex (interferon beta-1a) controlled dose finding study to evaluate the efficacy as measured by brain MRI lesions, and safety of 2 dose regimens of ocrelizumab in participants with Relapsing Remitting Multiple Sclerosis (RRMS).

Detailed description:

Arms:
arm 1: Participants received two intravenous (IV) infusions of matching placebo separated by 14 days in Cycle 1, followed by two infusions of ocrelizumab 300 mg separated by 14 days in cycle 2. A single infusion of ocrelizumab 600 mg was administered on Day 1 of cycles 3 and 4. Each cycle was of 168 days. arm 2: Participants two IV infusions of ocrelizumab 300 mg separated by 14 days in Cycle 1, followed by an infusion of ocrelizumab 600 mg on Day 1 and an infusion of placebo on Day 15 of Cycle 2. A single infusion of ocrelizumab 600 mg was administered on Day 1 of Cycles 3 and 4. Each cycle was of 168 days. arm 3: Participants received two IV infusions of ocrelizumab 1000 mg separated by 14 days in Cycle 1, followed by an infusion of ocrelizumab 1000 mg on Day 1 and an infusion of placebo on Day 15 of Cycle 2. A single infusion of ocrelizumab 1000 mg was administered on Day 1 of Cycle 3 and a single infusion of ocrelizumab 600 mg was administered on Day 1 of Cycle 4. Each cycle was of 168 days. arm 4: Participants received weekly intramuscular injections of Avonex 30 microgram (mcg) in Cycle 1, followed by two infusions of OCR 300 mg separated by 14 days in Cycle 2. A single infusion of ocrelizumab 600 mg was administered on Day 1 of Cycles 3 and 4. Each cycle was of 168 days.

Interventions: intervention 1: Placebo intervention 2: Ocrelizumab intervention 3: Avonex
Intervention descriptions: intervention 1: Placebo matching to ocrelizumab administered as IV infision in Cycle 1 Day 1. intervention 2: Ocrelizumab 300 mg was administered in cycle 1 followed by an infusion of ocrelizumab 600 mg on Day 1. A single infusion of ocrelizumab 600 mg was administered on Day 1 of cycles 3 and 4. intervention 3: Avonex was administered weekly intramuscular injections of 30 mcg in cycle 1 Day 1.

Protocol document: