NOGO-A in Multiple Sclerosis FTIH

This is a phase I study of GSK1223249. The study design is randomized, placebo-controlled, double-blind, sequential dose escalation, single dose administration. Approximately 36 patients with relapsing forms of Multiple Sclerosis (having had at least two relapses over the previous 24 months, OR at least one relapse within the last 12 months, OR having had at least one documented gadolinium-enhancing lesion on brain magnetic resonance imaging (MRI) within 12 months prior to Screening) will be enrolled.