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Published in: Journal of Neurology 8/2019

01-08-2019 | Torticollis Spasticus | Original Communication

Treatment of cervical dystonia with abo- and onabotulinumtoxinA: long-term safety and efficacy in daily clinical practice

Authors: Angela Jochim, Tobias Meindl, Tobias Mantel, Silke Zwirner, Michael Zech, Florian Castrop, Bernhard Haslinger

Published in: Journal of Neurology | Issue 8/2019

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Abstract

Introduction

Treatment with botulinum toxin A is the evidence-based first-line therapy of cervical dystonia. The aim of this study was to analyze long-term data of the most commonly used products concerning safety and efficacy in a big cohort over decades.

Methods

We retrospectively analyzed the treatment data of all cervical dystonia patients in our outpatient clinic having at least three treatment sessions with current onabotulinumtoxinA or abobotulinumtoxinA. The observation period was up to 17 years for onabotulinumtoxinA and 27 years for abobotulinumtoxinA. We report on safety and efficacy, comparing parameters such as dose, treatment intervals, side effects, occurrence and reasons of primary or secondary non-response.

Results

We analyzed a total of 2592 and 6660 treatment sessions in 135 patients with onabotulinumtoxinA, 209 with abobotulinumtoxinA and 10 having received both preparations. We found a moderate increase of dosage in the first years which was succeeded by a stable mean dose (138 and 663 mouse units, respectively) and stable injection intervals from the beginning. The most frequent side effects were mild dysphagia (2/6%), muscle weakness (2/6%) and pain (2/2%). Reasons for therapy discontinuation were change to a nearby doctor, age, other diseases, spontaneous improvement, side effects or possible treatment failure. Of all patients, only two tested positive for neutralizing antibodies against botulinum toxin A.

Conclusion

We show that treatment of cervical dystonia with the two most frequently used botulinum toxin A preparations is a safe and effective therapy even over a long treatment duration of up to 27 years.
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Metadata
Title
Treatment of cervical dystonia with abo- and onabotulinumtoxinA: long-term safety and efficacy in daily clinical practice
Authors
Angela Jochim
Tobias Meindl
Tobias Mantel
Silke Zwirner
Michael Zech
Florian Castrop
Bernhard Haslinger
Publication date
01-08-2019
Publisher
Springer Berlin Heidelberg
Published in
Journal of Neurology / Issue 8/2019
Print ISSN: 0340-5354
Electronic ISSN: 1432-1459
DOI
https://doi.org/10.1007/s00415-019-09349-2

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