My wife (who has RRMS) was on Copaxone for many years and did fairly well on it - that is until she had two serious exacerbations within one year. Her doctor pronounced the situation a treatment failure and suggested she shift to Tysabri. She has now been on T for over 2 years without any apparent exacerbation.
I told the story of her progress in a series of posts that can be accessed here:
(By moving to the prior posts you can read the account.)
From my wife's experience and what I hear about others who have moved to T after being treatment failures, this "switching" study will support the case for moving to T when other treatments fail. Unfortunately, it will take years for meaningful data.
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