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Article Publish Status: FREE
Abstract Title:

Capsaicin 8% patch versus oral pregabalin in patients with peripheral neuropathic pain.

Abstract Source:

Eur J Pain. 2015 Nov 19. Epub 2015 Nov 19. PMID: 26581442

Abstract Author(s):

M Haanpää, G Cruccu, T J Nurmikko, W T McBride, A Docu Axelarad, A Bosilkov, C Chambers, E Ernault, A K Abdulahad

Article Affiliation:

M Haanpää

Abstract:

BACKGROUND: Clinical trials have not yet compared the efficacy of capsaicin 8% patch with current standard therapy in peripheral neuropathic pain (PNP).

OBJECTIVES: Head-to-head efficacy and safety trial comparing the capsaicin patch with pregabalin in PNP.

METHODS: Open-label, randomized, multicentre, non-inferiority trial. Patients with PNP, aged 18-80 years, were randomly assigned to either the capsaicin 8% patch (n = 282) or an optimised dose of oral pregabalin (n = 277), and assessed for a ≥30% mean decrease in Numeric Pain Rating Scale (NPRS) score from baseline to Week 8. Secondary endpoints included optimal therapeutic effect (OTE),time-to-onset of pain relief and treatment satisfaction.

RESULTS: The capsaicin 8% patch was non-inferior to pregabalin in achievement of a≥30% mean decrease in NPRS score from baseline to Week 8 (55.7% vs. 54.5%, respectively; Odds ratio: 1.03 [95% CI: 0.72, 1.50]). The proportion of patients achieving OTE at Week 8 was 52.1% for the capsaicin 8% patch versus 44.8% for pregabalin (difference: 7.3%; 95% CI: -0.9%, 15.6%). The mediantime-to-onset of pain relief was significantly shorter for capsaicin 8% patch versus pregabalin (7.5 vs. 36.0 days; Hazard ratio: 1.68 [95% CI: 1.35, 2.08]; p < 0.0001). Treatment satisfaction was also significantly greater with the capsaicin 8% patch versus pregabalin. TEAEs were mild-to-moderate in severity, and resulted in treatment discontinuation only with pregabalin (n = 24). Systemic adverse drug reactions ranged from 0 to 1.1% with capsaicin 8% patch and 2.5 to 18.4% with pregabalin.

CONCLUSIONS: The capsaicin 8% patch provided non-inferior pain relief to an optimized dose of pregabalin in PNP, with a faster onset of action, fewer systemic side effects and greater treatment satisfaction.

Study Type : Human Study

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Sayer Ji
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