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Published on: June 25, 2019
Treatment of multiple sclerosis with rituximab: A multicentric Italian-Swiss experience
Chiara Zecca1, Francesca Bovis2, Giovanni Novi3
1Neurocentre of Southern Switzerland, Department of Neurology, Ospedale Civico, Lugano, Switzerland; Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland.
Background:
Rituximab, an anti-CD20 monoclonal antibody leading to B lymphocyte depletion, is increasingly used as an off-label treatment option for multiple sclerosis (MS).
Objective:
To investigate the effectiveness and safety of rituximab in relapsing-remitting (RR) and progressive MS.
Methods:
This is a multicenter, retrospective study on consecutive MS patients treated off-label with rituximab in 22 Italian and 1 Swiss MS centers. Relapse rate, time to first relapse, Expanded Disability Status Scale (EDSS) progression, incidence of adverse events, and radiological outcomes from 2009 to 2019 were analyzed.
Results:
A total of 355/451 enrolled subjects had at least one follow-up visit and were included in the outcome analysis. Annualized relapse rate significantly decreases after rituximab initiation versus the pre-rituximab start year in RRMS (from 0.86 to 0.09, p < .0001) and in secondary-progressive (SP) MS (from 0.34 to 0.06, p < .0001) and had a slight decrease in primary-progressive (PP) MS patients (from 0.12 to 0.07, p = 0.45). After 3 years from rituximab start, the proportion of patients with a confirmed EDSS progression was 14.6% in the RRMS group, 24.7% in the SPMS group, and 41.5% in the PPMS group. No major safety concerns arose.
Conclusion:
Consistently with other observational studies, our data show effectiveness of rituximab in reducing disease activity in patients with MS.
