Considering the significance of an early and consequent Multiple Sclerosis (MS) treatment as well as the challenge to achieve high adherence to treatment, evaluating the benefits of any new measure to improve adherence is important. The data storage capabilities of the BETACONNECT device, including the automated recording of injections, will facilitate the collection of reliable data on patient's injection behavior and adherence, which should be unaffected by recall bias or reporting bias.

To better understand the utilities of the new BETACONNECT device and characterize its contribution to adherence, we plan to prospectively follow-up MS patients using this device for 24 weeks. The study will take place in a real-life setting in Neurology centers across Europe.

Inclusion Criteria:

• Patients with the diagnosis of relapsing remitting multiple sclerosis or a clinically isolated syndrome.
• Patients must be on treatment with Betaferon or the decision to treat a patient with Betaferon has been made by the attending physician.
• Patient and attending physicians must have agreed on the usage of the BETACONNECT auto-injector device.
• Written informed consent must be obtained.

Exclusion Criteria:

• Patients receiving any other disease modifying drug.
• Contraindications of Betaferon described in the Summary of Product Characteristics.

The study population will consist of patients with relapsing remitting multiple sclerosis (RRMS) or patients with a clinically isolated syndrome (CIS) who are treated with Betaferon or will be treated with Betaferon® according to the attending physician's decision and for whom the patient and the physician have agreed to use the BETACONNECT device.

The study will be conducted in neurological centers and neurology departments specialized in the treatment of Multiple Sclerosis patients.