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Risk of relapse after natalizumab withdrawal: Results from the French TYSEDMUS cohort.


ABSTRACT: To assess disease activity within 12 months after natalizumab (NZ) discontinuation in a large French postmarketing cohort.In France, patients exposed at least once to NZ were included in the TYSEDMUS observational and multicenter cohort, part of the French NZ Risk Management Plan. Clinical disease activity during the year following NZ discontinuation was assessed in this cohort. Time to first relapse after NZ stop was analyzed using Kaplan-Meier method and potentially associated factors were studied using a multivariate Cox model.Out of the 4,055 patients with multiple sclerosis (MS) included in TYSEDMUS, 1,253 discontinued NZ and 715 of them had relevant data for our study. The probability of relapse within the year after NZ stop was estimated at 45% (95% confidence interval 0.41-0.49).This large and systematic survey of patients with MS after NZ withdrawal allows quantifying the risk of increased disease activity following treatment discontinuation. This study provides large-scale, multicenter, systematic data after NZ cessation in real-life settings.

SUBMITTER: Papeix C 

PROVIDER: S-EPMC5087255 | biostudies-other | 2016 Dec

REPOSITORIES: biostudies-other

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Risk of relapse after natalizumab withdrawal: Results from the French TYSEDMUS cohort.

Papeix Caroline C   Vukusic Sandra S   Casey Romain R   Debard Nadine N   Stankoff Bruno B   Mrejen Serge S   Uhry Zoe Z   Van Ganse Eric E   Castot Anne A   Clanet Michel M   Lubetzki Catherine C   Confavreux Christian C  

Neurology(R) neuroimmunology & neuroinflammation 20161028 6


<h4>Objective</h4>To assess disease activity within 12 months after natalizumab (NZ) discontinuation in a large French postmarketing cohort.<h4>Methods</h4>In France, patients exposed at least once to NZ were included in the TYSEDMUS observational and multicenter cohort, part of the French NZ Risk Management Plan. Clinical disease activity during the year following NZ discontinuation was assessed in this cohort. Time to first relapse after NZ stop was analyzed using Kaplan-Meier method and poten  ...[more]

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