I'm not so sure of the 10% number just yet, I think if it bears out over a much larger sampling size then that number can be etched in stone, but my thought is by the time you take out the mis-diagnosed (very regrettable too), and use a sample size that numbers into the thousands, then that % will actually be much lower.
I know I know, if it is x % for x sized sample that number won't change much even with a larger sample, but this is all so new and my sense is there will be (as delineated in the Zamboni paper) , definitions of the disease that will be more straightforward, right now at 4 if I remember, with shades of nuance and perhaps some overlap tossed in.
Then maybe there will be a "strictly auto-immune" MS classification all alone which could benefit greatly from pharmaceutical applications. Not that there won't be any pharmies for the CCSVI'ers, but hopefully a bit more tame and not so aggressive to stop an immune system which has nothing to fight anymore...
It's going to be a very interesting couple of years coming up indeed...
RRMS Dx'd 2007, first episode 2004. Bilateral stent placement, 3 on left, 1 stent on right, at Stanford August 2009. Watch my operation video: http://www.youtube.com/watch?v=cwc6QlLVtko
, Virtually symptom free since, no relap