Evaluation of Patient Retention of Fingolimod vs. Currently Approved Disease Modifying Therapy in Patients With Relapsing Remitting Multiple Sclerosis.

A 12 month study where 852 patients with relapsing remitting MS will be randomized 1:1 to fingolimod or approved disease modifying therapy. Patients will be be treatment naive or have only been treated with one class of DMT (Interferon beta preparation or glatiramer acetate) . Patients will be able to switch to different treatment for safety, efficacy, tolerability or convenience during the study. Primary objective is to evaluate efficacy of fingolimod by assessing patients retention on treatment. Secondary objectives are to compare reasons for discontinuation, adverse events, cognitive impairment, medication satisfaction and change in brain volume measured by MRI.