CARE-MS Study Design

About the Studies
CARE-MS I and II studies are designed to determine the safety and effectiveness of the investigational drug alemtuzumab as compared to the FDA-approved therapy Rebif® (interferon beta-1a) in people with RRMS. CARE-MS I will study treatment-naïve RRMS patients, and CARE-MS II will involve patients who have been previously treated and relapsed.

For both CARE-MS studies, participants will be randomly assigned to receive treatment with either alemtuzumab or Rebif for 2 years. Participants treated with alemtuzumab will receive intravenous infusions daily for the first 5 days of the first year and daily for the first 3 days of the second year. Study participants receiving Rebif will be given injections under the skin 3 times per week throughout both years of the study period. Rebif can be self-administered or administered by a caregiver.

Study participants will undergo periodic health assessments during the two-year time period of the study. Participants receiving alemtuzumab will be followed for safety in an extension study for at least three years after their last dose. Participants may be asked to take part in neurological evaluations to determine if any lasting treatment benefits exist. At the completion of the two-year study, participants receiving Rebif may be eligible to receive alemtuzumab in an extension study.

Total recruitment goals are 525 participants for CARE-MS I and 1,200 participants for CARE-MS II. For CARE-MS I, more than 100 study sites are participating worldwide. CARE-MS II will include more than 200 sites worldwide.

About Alemtuzumab
Alemtuzumab is a humanized monoclonal antibody that targets the CD52 antigen present on T and B lymphocytes, NK cells, monocytes, and macrophages, among other cell types. Alemtuzumab is being studied as a potential treatment of MS. Since it is not approved to treat MS, alemtuzumab must not be used in individuals with MS outside of a formal regulated clinical trial setting.