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Serious neurological disorder linked to MS, Crohn’s drug

A medication used to treat multiple sclerosis (MS) and Crohn’s disease has been linked to a serious and usually fatal neurological disorder, according to an alert issued to neurological health care professionals and their patients by the Food and Drug Administration (FDA). Natalizumab, marketed as Tysbri, was approved by the FDA in 2004 to treat relapsing forms of MS. In 2008, the FDA approved the drug’s use for moderately to severely active Crohn’s disease. From July 2006, when Tysabri marketing resumed, to September 8, 2009, there were 13 reported cases of Tysabri-related progressive multifocal leukoencephalopathy (PML) confirmed worldwide in patients ... Read More