The risk of PML with Tysabri is known and is kept under close monitoring by the EMEA. The product information advises healthcare professionals that the medicine must not be used in patients who have PML and that patients taking Tysabri should be regularly monitored for signs and symptoms suggestive of PML.
The two cases are currently being assessed by the EMEA’s scientific Committee for Medicinal Products for Human Use (CHMP). Elan, the marketing authorisation holder for Tysabri, has also been asked to provide any additional information they may have. Following assessment of all available data, the CHMP will determine whether any changes to the currently approved product information or the existing risk minimisation measures, including the ‘Physician Information and Management Guidelines for Multiple Sclerosis Patients on Tysabri’ are necessary.
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European Medicines Agency update on progressive multifocal leukoencephalopathy (PML) and Tysabri