Saturday December 16th 2017

Anti-JC Virus Antibody Prevalence in Canadian MS Patients (P4.141)

CONCLUSIONS: The overall estimated anti-JCV antibody prevalence rate in Canada was 56.3%. This finding is consistent with previous experience with the assay, which detected positivity in 55% of natalizumab-treated MS patients (Ann Neurol 2010;68:295-303). We found significant associations of anti-JCV antibody positivity with region, age, gender and prior immunosuppressive therapy, whereas seroprevalence was not associated with race, MS type, duration of MS or number or duration of MS treatments.Study Supported by: Biogen Idec.Disclosure: Dr. Bhan has received personal compensation for activities with Biogen Idec, Serono Inc., Genzyme Corporation, Novartis and Teva Neuroscience. Dr. Lapierre has received personal compensation for activities with Serono, Inc. and Novartis as a scientific adv…

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Anti-JC Virus Antibody Prevalence in Canadian MS Patients (P4.141)

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