Fatal natalizumab-associated progressive multifocal leukoencephalopathy with initial low JCV antibody index in a multiple sclerosis patient

MeSH terms

• Adult
• Antibodies, Viral* / blood
• Fatal Outcome
• Female
• Humans
• Immunologic Factors / adverse effects
• Immunologic Factors / therapeutic use
• JC Virus* / immunology
• Leukoencephalopathy, Progressive Multifocal* / chemically induced
• Leukoencephalopathy, Progressive Multifocal* / diagnosis
• Leukoencephalopathy, Progressive Multifocal* / etiology
• Leukoencephalopathy, Progressive Multifocal* / immunology
• Male
• Middle Aged
• Multiple Sclerosis* / complications
• Multiple Sclerosis* / drug therapy
• Multiple Sclerosis, Relapsing-Remitting / complications
• Multiple Sclerosis, Relapsing-Remitting / drug therapy
• Natalizumab* / adverse effects
• Natalizumab* / therapeutic use