Striving for more good days: patient perspectives on botulinum toxin for the treatment of cervical dystonia
Authors Poliziani M, Koch M, Liu X
Received 17 February 2016
Accepted for publication 17 May 2016
Published 22 August 2016 Volume 2016:10 Pages 1601—1608
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Doris Leung
Peer reviewer comments 2
Editor who approved publication: Dr Johnny Chen
Michele Poliziani,1 Marco Koch,2 Xierong Liu1
1Opinion Health, London, UK; 2Merz Pharmaceuticals GmbH, Frankfurt am Main, Germany
Background: The recommended reinjection interval for botulinum neurotoxin (BoNT) formulations in the treatment of cervical dystonia (CD) is generally ≥12 weeks, though intervals ≥10 weeks are approved for incobotulinumtoxinA in Europe. However, recurring symptoms can occur before the end of this period. Using qualitative research, we sought a greater understanding of disease burden, unmet patient needs, and barriers to treatment.
Methods: We conducted online semistructured, focus-group discussions, and online forum follow-up discussions among patients with CD, focusing on disease burden, patient needs, injection cycle preferences, and relationships with health care professionals. A subset of patients was also questioned in telephone interviews about individual experiences of CD and BoNT treatment. All participants were UK residents who had received onabotulinumtoxinA or abobotulinumtoxinA for CD for ≥1 year.
Results: Thirty-one patients (81% female; mean duration of CD 16.4 [range 4–31] years; mean BoNT injection cycle length 12.8 weeks) participated in the online focus-group and forum follow-up discussions. Of these, seven patients participated in telephone interviews. All had recurring symptoms between treatments, which substantially impacted on their work, family, and social life. Symptom severity fluctuated throughout an injection cycle and differed between patients and across injection cycles. Participants’ relationships with health care professionals and treatment satisfaction varied greatly. Many participants wanted longer-lasting and/or more stable symptom relief with shorter and/or more flexible injection intervals, according to individual needs. Lack of health care resources, long journeys to treatment centers, and immunogenicity/side-effect concerns were perceived as the main barriers to more flexible treatment.
Conclusion: The high burden of recurring primary and secondary symptoms of CD considerably affects patients’ quality of life. Patient-led assessments of disease burden revealed that personalized, more flexible, and/or shorter BoNT injection intervals may reduce the day-to-day impact of CD. Collaboration between patients, clinicians, and health care systems may effect change and improve treatment for patients with CD.
Keywords: botulinum toxin type A, cervical dystonia, patient survey, spasmodic torticollis, treatment satisfaction
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