If you are worried about your immune system WHY ON EARTH WOULD YOU MODIFY IT WITH TYSABRI!!?????????
You weren't talking to me,but this is exactly why I have refused any of the second tier drugs to date. I have been happy to try anything with no long term consequences (copaxone. methotrexate. abx. steroids) but have deteriorated right along. It just seemed a bad policy to me to alter your body in such a way that it can't recover. What if they find out MS is actually EBV in the b cells? And treatment is (whatever it is) and you can't have it because your immune system is permanently damaged by (some MS drug )?
This seems safe to me. And geez, I know scads of people who have taken chemo--most of it worse than this single agent. It is a well understood process, with known complications that can be managed.
Now if they were doing traditional ASCT with radiation, that's another cat altogether...........
sine we are on the subject, are the b cells killed in treatment as well? just curious.