Lemtrada Cuts Relapse Rate, Brain Atrophy; BG-12 Data Also Wow

Optimism could be building for Sanofi SA's Lemtrada (alemtuzumab), the drug at the center of negotiations surrounding the big pharma's acquisition of Genzyme Corp. earlier this year, following the release of detailed data from the first pivotal trial in relapsing-remitting multiple sclerosis (MS) patients that boosts positive top-line results reported in July.