Avis Favaro reports on CTV News
http://www.ctvnews.ca/health/jama-neurology-study-delivers-verdict-on-novel-ms-treatment-1.3684387

""I believe that research in medicine, even if it leads to negative results, allows us to understand the diseases and care more precisely for the people who suffer from it," Dr. Piscaglia said in an email.
While clearly the therapy doesn't work on all patients, the study does note there appears to be a group of patients, who had fewer brain lesions, suggesting this group should be "further analyzed."

A new study published by JAMA Neurology delivers a verdict on a long-debated theory that MS can be treated by opening blocked veins: it's safe but "largely ineffective," and so cannot be recommended.