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Unexpected worsening of progressive multifocal leucoencephalopathy following COVID-19 pneumonia

par Borrelli, Serena ;Dachy, Bernard ;Gazagnes, Marie-Dominique ;Du Pasquier, Renaud
Référence Journal of neurovirology
Publication Publié, 2021-06-01

Article révisé par les pairs

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Résumé :

Progressive multifocal leucoencephalopathy is a serious side effect of natalizumab, a humanized monoclonal antibody approved for the treatment of multiple sclerosis. Here, we report a case of unexpected worsening of natalizumab-related progressive multifocal leucoencephalopathy following COVID-19. After natalizumab discontinuation, a slight neurological improvement was observed, but, two months later the patient was admitted to the hospital because of neurological deterioration and COVID-19 mild pneumonia. Except for SARS-CoV-2 infection, no other potential factors of neurological worsening were identified. Thus, we pose the hypothesis that SARS-CoV-2 was instrumental in the progressive multifocal leucoencephalopathy deterioration.