PML not just for Tysabri

Turns out quite a few drugs are plaguing users with PML. Genentech just pulled its psoriasis drug, Raptiva from the market because it was causing PML.

At least four other drugs have been linked to PML risk. They include Roche’s Cellcept, used to prevent transplant rejections; Biogen Idec Inc. and Genentech’s cancer drug Rituxan; Biogen’s multiple sclerosis treatment Tysabri and Genzyme Corp .’s leukemia drug Campath.