CAMBRIDGE, Mass.--(BUSINESS WIRE)--Genzyme, a subsidiary of sanofi-aventis Group (EURONEXT: SAN and NYSE: SNY), announced today that it will present new data from its completed Phase 2 trial of the investigational drug alemtuzumab for multiple sclerosis (MS) at the American Academy of Neurology’s (AAN) 63rd Annual Meeting in Hawaii, April 9 - 16, 2011. Included among the additional Phase 2 trial safety and efficacy data at AAN will be presentations on the clinically-active disease status of patients through five-years of patient follow-up as well as data describing a measure of vision improvement.