The impact of onabotulinumtoxinA on severe headache days: PREEMPT 56-week pooled analysis

The impact of onabotulinumtoxinA on severe headache days: PREEMPT 56-week pooled analysis Background: OnabotulinumtoxinA has been shown to reduce headache-days among patients with chronic migraine (CM). The objective of this analysis was to determine whether onabotulinumtoxinA has an impact on headache-day severity in patients with CM among those patients who were deemed non-responders based on reduction in the frequency of headache days alone. Methods: Data from the Phase 3 REsearch Evaluating Migraine Prophylaxis Therapy (PREEMPT) clinical trial program (a 24-week, 2-treatment cycle, double-blind, randomized, placebo-controlled, parallel-group phase, followed by a 32-week, 3-treatment cycle, open-label phase) were pooled for analysis. Patients kept a daily diary to record headache severity on a 4-point scale (from none to severe), and a 6-domain Headache Impact Test (HIT-6) was used to determine the clinical impact of headaches. Analysis was undertaken to assess whether the subset of patients that were headache-day frequency non-responders at week 24 (patients with <50% reduction in headache-day frequency) experienced a reduction in headache severity whilst receiving onabotulinumtoxinA. Results: For headache-day frequency non-responders, significant reductions in the number of severe headache days, average daily headache severity, pooled percentage of severe headache days and headache severity score were observed at week 24 for patients who had received onabotulinumtoxinA compared with those who had received http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Headache and Pain Springer Journals

The impact of onabotulinumtoxinA on severe headache days: PREEMPT 56-week pooled analysis

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Publisher
Springer Milan
Copyright
Copyright © 2017 by The Author(s).
Subject
Medicine & Public Health; Pain Medicine; Internal Medicine; Neurology
ISSN
1129-2369
eISSN
1129-2377
D.O.I.
10.1186/s10194-017-0784-4
Publisher site
See Article on Publisher Site

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