 The trial consists of giving continuous alemtuzumab and cyclical high-dose methyl-prednisone.Alentuzumab is given intravenously during the first 4 weeks of treatment to ensure that adequate serum levels are achieved quickly. The drug will be administered daily during the first week, commencing at a dose of 3mg, and increasing to 10mg and then up to the target dose of 30mg as tolerated.Thereafter alemtuzumab will be given at a dose 30mg thrice weekly. From week 5, alemtuzumab will be given at the same dose but by the subcutaneous route of administration. 