The purpose of this study is to collect long-term safety, tolerability, effectiveness and health outcomes data in eligible subjects who have participated in a Novartis ofatumumab clinical MS study.
Vaccination sub-study The purpose of this research sub-study is to find out the effects of ofatumumab on the development of antibody responses to selected vaccines and keyhole limpet hemocyanin (KLH) neo-antigen in subjects with relapsing multiple sclerosis (RMS).
1. Must have completed a selected Novartis MS study which dosed ofatumumab 20 mg sc every 4 weeks
2. Written informed consent