Actually, there are several.... An article came out yesterday about another breakthrough study by a British group using stem cells to regenerate myelin on the demyelinated fascicles. There are several drugs in the pipeline. One was recently accepted by Health Canada. We learned at the August conference that there are several others in the pipeline that are being investigated. You never know before the trial is completed whether it will work or not, or how good it will be. But it's not as though there is nothing coming.
So there are two avenues: the pharmacological avenue, on the one hand, and the stem cell avenue. Splendid work on stem cells is done here in Canada by Sam Weiss at the University of Alberta.