Two cases of progressive multifocal leukoencephalopathy (PML) are reported in patients with psoriasis who were treated with fumarates, one with Fumaderm and the other with a compound containing dim ...

PML incidence is expected to decline with screening of MS patients for JC virus exposure prior to natalizumab's initiation, which has only recently become routine.

Biogen Idec and Elan reported to the SEC that another case of PML has been seen with natalizumab therapy in a patient with MS. The case was found through surveillance, the companies note, and the ...

Learn how the John Cunningham (JC) virus may increase the risk of progressive multifocal leukoencephalopathy (PML) for people with multiple sclerosis (MS).

Because the first sign of PML was seen in new MRI findings, this case report underlines the value of surveillance imaging in patients receiving natalizumab, researchers say.