Tysabri – 11th case of PML!

Yet again, from Medical News Today, today’s news:

An 11th patient taking Biogen Idec’s multiple sclerosis (MS) drug Tysabri has developed a potentially deadly brain infection.

In the latest confirmed case of progressive multifocal leukoencephalopathy, or PML, the patient took Tysabri for 29 doses, continuing the trend of the last six reported cases of the infection, where each patient had therapy for two years or longer.

The latest patient was located in the USA, the third American to have developed the infection. Of the 11 reported cases, one patient has died.

The PML incidence rate remains below the long-projected risk rate of one in 1,000 patients for those patients receiving the therapy for 12 months or 18 months.

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