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  • Title: Efficacy and safety of treatment with incobotulinum toxin A (botulinum neurotoxin type A free from complexing proteins; NT 201) in post-stroke upper limb spasticity.
    Author: Kaňovský P, Slawek J, Denes Z, Platz T, Comes G, Grafe S, Pulte I.
    Journal: J Rehabil Med; 2011 May; 43(6):486-92. PubMed ID: 21533328.
    Abstract:
    OBJECTIVE: To investigate the efficacy and safety of repeated treatment with incobotulinum toxin A (botulinum neurotoxin type A free from complexing proteins; NT 201) in post-stroke upper limb spasticity. PATIENTS AND DESIGN: After completing a double-blind, placebo- controlled, multicentre study (up to 20 weeks), 145 patients received up to 5 additional sets of NT 201 injections for an open-label extension period of up to 69 weeks. METHODS: Upper limb muscle groups were treated as clinically indicated; injection intervals were ≥ 12 weeks. Outcome was assessed 4 weeks after each injection session and at the end of the study. RESULTS: Muscle tone (flexors of wrist, elbow, finger, and thumb, and forearm pronators) improved throughout the study (response rate: up to 80.6%, p < 0.0001, Ashworth Scale). Continuous and significant improvements were also observed in disability (p < 0.05, Disability Assessment Scale). The majority of investigators, patients and caregivers rated NT 201 efficacy as very good or good (56-84%). Adverse events considered treatment-related occurred in 11% of patients. Formation of neutralizing antibodies was not observed in any patient after repeated treatments. CONCLUSION: Treatment with NT 201 showed sustained improvements in muscle tone and functionality (median dose 400 units) over a study duration of up to 89 weeks, and was well tolerated during repeated treatments for post-stroke upper limb spasticity.
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