An Open Label, Randomized, Multicenter, Comparative, Parallel Group Study of Rebif® 44 Mcg Administered Three Times Per Week by Subcutaneous Injection, Compared With Avonex® 30 Mcg Administered Once Per Week by Intramuscular Injection in the Treatment of Relapsing-remitting Multiple Sclerosis

This is an open-label, randomized, multicenter, comparative, and parallel-group study comparing the therapeutic effects of two interferon-beta-1a regimens in relapsing-remitting multiple sclerosis (MS). The primary objective is to demonstrate the superiority of Rebif® 44 microgram (mcg) subcutaneous injection given three times a week (132 mcg per week) to that of Avonex® 30 mcg intramuscular injection given once a week.