Guys
Same thing for me here
Humira is not working for me and I have had 2 severe GI bleeds in the past 6 months
Doctor put me on 6MP 2 months ago and is weening me down from Prednisone - But old me the next course of Action would be Tysabri
Also very nervous about PML - apparently, if you do not show the antibody for JC virus you should be fine. But I agree, I would be the one exception
The thing with Tysabri is that is is ahumanized monoclonal antibody so it attacks a different pathway of Crohns that the Ani-TNF's including Cimzi and Humira.
A new drug that is in Phase III trials is Vedolizumab - It is the same as Tysabri Vedolizumab is a humanized monoclonal antibody that specifically binds to the alpha-4 beta-7 integrin protein that helps move leukocytes into the gut. Natalizumab/Tysabri is a less specific integrin antagonist that affects the protein’s actions and immune-cell trafficking to a variety of body sites, including the brain which is why there are no reports of PML in the thousands of tests they are conducting with this new drug.
I came across this article yesterday as I was researching Tysabri
http://www.internalmedicinenews.com/news/conference-news/digestive-disease-week-2012/single-article/vedolizumab-scores-on-safety-efficacy-for-ulcerative-colitis/dc7ee9857e7f6f4b9a47aac0dfe39f36.html
I hope this helps