Endovascular treatment for multiple sclerosis: The intersection of science, policy and the public.

The Canadian Institutes of Health Research and the Multiple Sclerosis (MS) Society of Canada recently convened an Invitational Panel to consider the scientific evidence linking chronic cerebrospinal venous insufficiency (CCSVI) and MS. The panel supported studies to determine whether CCSVI causes MS, but felt that there is currently so much uncertainty about the relationship between CCSVI and MS that a clinical trial is not indicated at this time. This commentary argues that the decision about whether a clinical trial is warranted must be informed by science, but should be addressed from a broader societal perspective. We suggest that members of the public should be more actively involved in scientifically based, but patient-relevant and emotionally charged issues considered by organizations that fund health research.