- Safety Parameters/Evaluations: Safety will be assessed by virtue of changes in T2/FLAIR lesions (number and volume) and in gadolinium enhancements (measured at 6 and 12 months after treatment initiation) compared to baseline measurements derived from one pretreatment run- in scan. In addition, a variety of clinical assessments will be performed for the period of 12 months of treatment. We will enroll 12 patients in each group (24 total)