Last reply 5 years ago
Tysabri-JC Positive

I have been on Tysabri for 14 months – AND LOVE IT! Was JC neg originally and now turned JC positive BUT I have previously been prescribed azothioprine and as such the risk factor of PML is higher than normal JC positive people – is there anyone out there who is JC + AND previously been on azothioprine (basically the highest risk group for PML there can be)??

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