No evidence of CCSVI at multiple sclerosis onset

This study seems to show that there is low incidence of CCSVI in people with clinically isolated syndrome (CIS), which is suggestive of the onset of MS: PubMed abstract.  While this is only an abstract and it is not clear what protocols were followed, it does raise doubts about CCSVI as an initial cause of MS.  There is a TiMS discussion thread about this study and its possible implications: TiMS discussion.