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Real members of MyMSTeam have posted questions and answers that support our community guidelines, and should not be taken as medical advice. Looking for the latest medically reviewed content by doctors and experts? Visit our resource section.

Tysabri cause pml

A MyMSTeam Member asked a question 💭
San Jose, CA

I never had pml people telling me tysabri cause it. What should I do. I'm worry. Should I switch medication infusion.

March 30, 2023
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A MyMSTeam Member

That's why they test for jcv (john Cunningham virus) JCV is a common virus that can cause PML in people who have weakened immune systems, such as people taking TYSABRI. Before or while you receive TYSABRI, your doctor may do a blood test to check if you have been infected by JCV.
Pml is rare.

March 30, 2023

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