Journal
CURRENT MEDICAL RESEARCH AND OPINION
Volume 35, Issue 3, Pages 417-426Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03007995.2018.1558850
Keywords
Capsaicin 8% patch; long-term; real-life setting; treatment outcome
Funding
- Astellas Pharma France
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Objective: To describe the characteristics of patients treated with the capsaicin 8% patch, prescribing conditions, long-term effects of repeat treatment on pain intensity and perception, quality of life, and impact on concomitant medication. Methods: A national, longitudinal, prospective, non-interventional, post-marketing open study was conducted in 50 French pain centers. Adult volunteer non-diabetic patients with peripheral neuropathic pain receiving capsaicin 8% patch treatment were consecutively enrolled. Treatment could be repeated over a 12-month period, with 6 months' follow-up after last application. Results: A total of 684 patients (age: 53.0 +/- 14.9 years, mean +/- standard deviation; post-traumatic/surgical peripheral neuropathic pain: 76.3%; pain intensity: 6.2 +/- 1.7; pain duration: 3.0 years, median) were treated with 1 to 5 patches at 3/4 month intervals; 70.3% were naive to capsaicin 8% patch treatment at inclusion. Six months after last application, treatment was considered as successful for 21.8% (95% confidence interval: 17.5%-26.7%) of patients by a stringent criterion combining improvement according to the patient's global impression of change (PGIC) and at least 30% improvement on a numerical pain rating scale (NPRS). Clinically relevant improvement in health-related quality of life was observed at end-of-study. No unexpected safety concerns were observed with capsaicin 8% patch repeat treatment. Conclusions: The data of this post-marketing study meets the request by the French authorities for additional data on conditions of use in everyday practice. They confirmed the tolerance and long-term effect of capsaicin 8% patch in patients with peripheral neuropathic pain in real-world conditions.
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