Long-term Safety and Tolerability of 0.5 mg Fingolimod in Patients With Relapsing Forms of Multiple Sclerosis

Key Inclusion Criteria: \- Patients who have completed selected ongoing or planned trials with FTY720. Key Exclusion Criteria: * Premature permanent discontinuation of a previous fingolimod study. * Pregnant or nursing (lactating) women. * Women of child-bearing potential, UNLESS they are using two birth control methods, at least 1 of which must be hormonal contraception, tubal sterilization, partner's vasectomy or intrauterine device. * Chronic disease of the immune system, other than multiple sclerosis, which may require immunosuppressive treatment. * Diabetic patients with moderate or severe non-proliferative diabetic retinopathy or proliferative diabetic retinopathy and uncontrolled diabetic patients with HbA1c \> 8%. * Active systemic bacterial, viral or fungal infections, or known to have AIDS, Hepatitis B, Hepatitis C infection or have positive HIV antibody, Hepatitis B surface antigen or Hepatitis C antibody tests. * Previous treatment with cladribine, cyclophosphamide or mitoxantrone. * Treatment with immunoglobulins and/or monoclonal antibodies (including Natalizumab) in the past 3 months during the previous fingolimod study: * Any of the following cardiovascular conditions that have developed during the previous fingolimod study: * Myocardial infarction within the past 6 months prior to entry in the extension study or with current unstable ischemic heart disease; * Cardiac failure (Class III, according to New York Heart Association Classification) or any se…