Clinical Features of COVID-19 on Patients With Neuromyelitis Optica Spectrum Disorders.

BACKGROUND AND OBJECTIVES: To describe the clinical features and disease outcomes of coronavirus disease 2019 (COVID-19) in patients with neuromyelitis optica spectrum disorder (NMOSD). METHODS: The Neuroimmunology Brazilian Study Group has set up the report of severe acute respiratory syndrome (SARS-CoV2) cases in patients with NMOSD (pwNMOSD) using a designed web-based case report form. All neuroimmunology outpatient centers and individual neurologists were invited to register their patients across the country. Data collected between March 19 and July 25, 2020, were uploaded at the REDONE.br platform. Inclusion criteria were as follows: (1) NMOSD diagnosis according to the 2015 International Panel Criteria and (2) confirmed SARS-CoV2 infection (reverse transcription-polymerase chain reaction or serology) or clinical suspicion of COVID-19, diagnosed according to Center for Disease Control / Council of State and Territorial Epidemiologists (CDC/CSTE) case definition. Demographic and NMOSD-related clinical data, comorbidities, disease-modifying therapy (DMT), COVID-19 clinical features, and severity were described. RESULTS: Among the 2,061 pwNMOSD followed up by Brazilian neurologists involved on the registry of COVID-19 in pwNMOSD at the REDONE.br platform, 34 patients (29 women) aged 37 years (range 8-77), with disease onset at 31 years (range 4-69) and disease duration of 6 years (range 0.2-20.5), developed COVID-19 (18 confirmed and 16 probable cases). Most patients exhibited mild disease, being treated at home (77%); 4 patients required admission at intensive care units (severe cases); and 1 patient died. Five of 34 (15%) presented neurologic manifestations (relapse or pseudoexacerbation) during or after SARS-CoV2 infection. DISCUSSION: Most NMOSD patients with COVID-19 presented mild disease forms. However, pwNMOSD had much higher odds of hospitalization and intensive care unit admission comparing with the general Brazilian population. The frequency of death was not clearly different. NMOSD disability, DMT type, and comorbidities were not associated with COVID-19 outcome. SARS-CoV2 infection was demonstrated as a risk factor for NMOSD relapses. Collaborative studies using shared NMOSD data are needed to suitably define factors related to COVID-19 severity and neurologic manifestations.

Neuromyelitis optica treatment: analysis of 36 patients.

OBJECTIVE: To analyze treatment response in Brazilian patients with neuromyelitis optica. DESIGN: Retrospective review. SETTING: Neuroimmunology Clinic of the Federal University of São Paulo, São Paulo, Brazil. Patients  Thirty-six patients with relapsing-remitting optic-spinal disease; long, extending spinal cord lesions; and brain magnetic resonance images not meeting Barkhof criteria for multiple sclerosis, thus fulfilling the 1999 and 2006 criteria for neuromyelitis optica. Patients were followed up from 1994 to 2007. MAIN OUTCOME MEASURES: Relapses and accumulation of disability. RESULTS: Mean follow-up time was 47.2 months and mean age at onset was 32.3 years. Sixty-four treatments were implemented in 36 patients, which included interferon beta, methotrexate, cyclophosphamide, prednisone, and azathioprine solely or plus prednisone. Patients who were treated with azathioprine or azathioprine with prednisone had a reduction in the occurrence of relapses and Expanded Disability Severity Scale score stabilization, as opposed to patients who received other treatments. Of the 4 patients who died, only 1 had received azathioprine treatment. CONCLUSION: Azathioprine as monotherapy or with prednisone seems to have reduced the relapse frequency and halted disability progression in the majority of patients treated, with minor and manageable adverse effects.