Investigation of the Effect of Dimethyl Fumarate on T Cells in Patients With Relapsing Remitting Multiple Sclerosis

Dimethyl fumarate (Tecfidera®) treatment is initiated by daily administration of 120 mg Tecfidera® p.o. in the morning in week 0. At week 1, the dose is increased to 120 mg Tecfidera® p.o. twice daily, split into a morning and an evening dose. At week 2, the daily dose is further increased to 240 mg Tecfidera® p.o. in the morning and 120 mg Tecfidera® p.o. in the evening. Finally at week 3, the dose will be increased to the final daily dose of 240 mg Tecfidera® p.o. in the morning and 240 mg Tecfidera® p.o. in the evening and maintained throughout the study.