- Patients must be on no treatment or be on a stable dose of one of the following agents for a minimum of 3 months duration prior to the month 0 visit: Copaxone®, Betaseron® (or Extavia®), Rebif®, Avonex®, PLEGRITY®, Ocrelizumab, Rituximab, Gilenya®, Aubagio®, or Tecfidera®. The time spent in the screening period may serve as part of this 3-month period.