Multiple Doses of Anti-NOGO A in Relapsing Forms of Multiple Sclerosis

This study will be a randomised, placebo-controlled, single-blind (Investigator and Subject), single and repeat ascending dose protocol, in multiple sclerosis patients. The study is designed to evaluate the safety, tolerability, pharmacokinetics, and any potential for immunogenicity of GSK1223249 (a monoclonal antibody raised against Nogo-A), given intravenously in Multiple Sclerosis patients. The study will also evaluate exploratory endpoints including para-clinical activity via magnetic resonance imaging, cerebrospinal fluid pharmacokinetics, and effect of repeat dose administration of GSK1223249 on disability. Furthermore MS symptoms, such as relapses and individual symptom severity will be closely monitored.