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  • Title: Natalizumab for Achieving Relapse-Free, T1 Gadolinium-Enhancing-Lesion-Free, and T2 Lesion-Free Status in Japanese Multiple Sclerosis Patients: A Phase 2 Trial Subanalysis.
    Author: Saida T, Kira JI, Kishida S, Yamamura T, Ohtsuka N, Dong Q, Tibung JT.
    Journal: Neurol Ther; 2017 Jun; 6(1):153-159. PubMed ID: 28078634.
    Abstract:
    INTRODUCTION: In a phase 2 trial of natalizumab in Japanese patients with relapsing-remitting multiple sclerosis (RRMS), treatment-related changes in relapses, brain lesions, and disability worsening were found to be comparable with those observed in the phase 3 studies of natalizumab in primarily non-Asian RRMS patients. METHODS: This subanalysis of the placebo-controlled phase 2 trial of natalizumab in Japanese RRMS patients (n = 94) evaluated the effects of natalizumab versus placebo on the proportion of patients who achieved relapse-free, T1 gadolinium-enhancing (Gd+) lesion-free, and new/newly enlarged T2 lesion-free status, defined as "no evidence of inflammatory disease activity" (NEDA)-like status, after 24 weeks of treatment. RESULTS: In this subanalysis, significantly more natalizumab-treated than placebo-treated patients achieved NEDA-like status (76.6% vs. 31.9%; P < 0.0001). In addition, the odds ratio (95% confidence interval) for patients on natalizumab to reach NEDA-like status was 6.98 (2.80-17.38) compared with placebo patients. CONCLUSION: These results confirm previous findings indicating that natalizumab is efficacious in Japanese patients with RRMS. FUNDING: Biogen. TRIAL REGISTRATION: ClinicalTrials.gov identifier, NCT01440101.
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