Switch from abobotulinumtoxinA (Dysport®) to incobotulinumtoxinA (Xeomin®) botulinum toxin formulation: A review of 257 cases

Grosset, D. G. , Tyrrell, E. G. and Grosset, K. A. (2015) Switch from abobotulinumtoxinA (Dysport®) to incobotulinumtoxinA (Xeomin®) botulinum toxin formulation: A review of 257 cases. Journal of Rehabilitation Medicine, 47, pp. 183-186. (doi:10.2340/16501977-1895) (PMID:25325305)

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Abstract

OBJECTIVE: To explore the dose equivalence ratio and treatment costs for abobotulinumtoxinA and incobotulinumtoxinA for patients with focal dystonias. DESIGN: Patient chart review. SUBJECTS/PATIENTS: Adult patients with blepharospasm (n = 19), cervical dystonia (n = 122), hemifacial spasm (n = 91) or segmental/generalized dystonia (n = 19) at a neurology outpatient clinic. METHODS: Patients were switched from established abobotulinumtoxinA therapy to incobotulinumtoxinA at a ~4:1 unit ratio. Dose requirements, injection intervals, treatment efficacy, and adverse events were evaluated for a period of ≥ 1 year. RESULTS: Patients were switched from abobotulinumtoxinA to incobotulinumtoxinA with a mean dose ratio of 4.07 (standard deviation (SD) 0.50). After switching, incobotulinumtoxinA dose requirements remained stable; the mean (SD) dose ratio at the end of the review period (52-219 weeks after switching) was 3.89 (SD 0.58). Injection intervals also remained stable after switching. Adverse events were injection site pain (n = 45) and bruising (n = 4). Five patients (2.0%) discontinued incobotulinumtoxinA treatment: 4 stopped receiving injections, and 1 reverted to abobotulinumtoxinA. Switching to incobotulinumtoxinA reduced the mean toxin expenditure to 76.7% of the cost of abobotulinumtoxinA. CONCLUSION: For patients with conditions commonly treated in dystonia clinics, switching from abobotulinumtoxinA to incobotulinumtoxinA, given at equivalent doses (~4:1 unit ratio) at similar intervals, was effective, well tolerated and achieved cost savings.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Grosset, Dr Donald and Grosset, Dr Katherine
Authors: Grosset, D. G., Tyrrell, E. G., and Grosset, K. A.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing
Journal Name:Journal of Rehabilitation Medicine
Publisher:Foundation for Rehabilitation Information
ISSN:1650-1977
ISSN (Online):1651-2081
Published Online:16 October 2014
Copyright Holders:Copyright © 2015 The Authors
First Published:First published in Journal of Rehabilitation Medicine 47:183-186
Publisher Policy:Reproduced in accordance with the publisher copyright policy
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