Hey folks, this is the most interesting research on Tysabri that I have read in a long time.
http://www.clinicalneurologynews.com...duced-pml.html
What they are suggesting is that people who are JCV + and who weigh 70 kg. or less move to 5-6 week dosing schedules to lower PML risk instead of getting your infusion every 4 weeks.
Apparently if you are small and a light weight, you build up higher than anticipated levels of Tysabri -- something they call saturation. You wind up even MORE immunosuppressed and at risk for PML.
Don't you think they should have figured this out earlier?