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The Division of Drug Information (DDI) is CDER's focal point for public inquiries. We serve the public by providing information on human drug products and drug product regulation by FDA.
The U.S. Food and Drug Administration (FDA) is alerting the public that a patient in Europe diagnosed with possible multiple sclerosis (MS) has developed a rare and serious brain infection after taking the drug Gilenya (fingolimod). This is the first case of this disease, called progressive multifocal leukoencephalopathy or PML, reported following the administration of Gilenya to a patient who had not previously received Tysabri (natalizumab), an MS drug associated with a higher risk of PML.
Patients should not stop taking Gilenya without first discussing any questions or concerns with their health care professionals. We are providing this alert while we continue to investigate the PML case, and we are working with Gilenya’s manufacturer, Novartis, to obtain and review all available information about this occurrence. We will communicate our final conclusions and recommendations after our evaluation is complete.
PML is a rare and serious brain infection caused by the John Cunningham (JC) virus that damages the fatty covering of the brain called myelin. Myelin is essential for the proper functioning of nerves in the white matter of the brain. PML usually causes death or severe disability. The JC virus is a common virus that is harmless in most people but can cause PML in people who have weakened immune systems. Some medications, including Gilenya, can weaken the immune system.
Fore more information please visit: Gilenya
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