• Clin Neuropharmacol · Sep 2009

    Randomized Controlled Trial Comparative Study

    Efficacy and safety of botulinum neurotoxin NT 201 in poststroke upper limb spasticity.

    • Petr Kanovský, Jaroslaw Slawek, Zoltan Denes, Thomas Platz, Irena Sassin, Georg Comes, and Susanne Grafe.
    • Department of Neurology, Palacky University Medical School, University Hospital, Olomouc, Czech Republic. petr.kanovsky@fnol.cz
    • Clin Neuropharmacol. 2009 Sep 1; 32 (5): 259-65.

    ObjectiveTo assess the impact of the new botulinum neurotoxin type A preparation NT 201 (Xeomin; Merz Pharmaceuticals GmbH, Frankfurt, Germany) on muscle tone, functional disability, and caregiver burden in patients with poststroke upper limb spasticity in a randomized, placebo-controlled, double-blind study.MethodsOne hundred forty-eight patients with an Ashworth Scale score of 2 or higher for wrist and finger flexors and at least moderate disability in their principal therapeutic target of the Disability Assessment Scale were treated either with NT 201 (median, 320 U) or placebo and followed up for up to 20 weeks. Treatment of the wrist and finger muscles was mandatory.ResultsA significantly higher proportion of patients treated with NT 201 were responders (improvement of > or =1 point in the Ashworth Scale score), as observed in comparison to placebo 4 weeks after treatment in wrist flexors (odds ratio, 3.97; 95% confidence interval, 1.9-8.3; P < 0.001, intent to treat). For all treated flexor muscle groups, statistically significant odds ratios in favor of NT 201 were observed at week 4 (P < or = 0.009). Statistically significant results in favor of NT 201 were observed at all postinjection visits until week 12 in the principal therapeutic target (P < or = 0.005), in the global assessment of efficacy (P < 0.001), and in some tasks of the Carer Burden Scale (P < 0.05). Similar numbers of patients in each group experienced at least 1 adverse event (NT 201, n = 21; placebo, n = 20). Importantly, none of the patients developed neutralizing antibodies.ConclusionsNT 201 led to statistically significant improvements in muscle tone and disability and was well tolerated in patients with poststroke upper limb spasticity.

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