Skip to content
Subscriber Only

Novartis Gilenya Patient Has Infection After Taking Tysabri

A patient taking Novartis AG’s Gilenya multiple sclerosis pill contracted a potentially deadly brain infection, adding to safety concerns about the Swiss drugmaker’s most promising potential blockbuster.

The patient used Tysabri, an injection from Biogen Idec Inc. and Elan Corp., before using Gilenya, Novartis said in an e-mailed statement today. Tysabri increases the risk of the viral infection, known as progressive multifocal leukoencephalopathy, that usually leads to death or severe disability, according to a warning the drug’s label has carried since 2006.