Department of Neurology (LZ), Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania; and Department of Neurology (AJG), University of California San Francisco, San Francisco, California.

Address correspondence to Ari J. Green, MD, MCR, Department of Neurology, University of California San Francisco, 675 Nelson Rising Lane, #216A, San Francisco, CA 94158; E-mail: [email protected]

L. Zuroff has received speaker fees from EMD Serono. A. J. Green reports other from Bionure, grants, personal fees, and other from Pipeline Pharmaceuticals, grants from National MS Society, and personal fees from JAMA Neurology. In addition, Dr. Green has a patent Small Molecule drug for Remyelination pending and has worked on testing off-label compounds for remyelination.