Cited by 440Pain Mechanisms and TreatmentsPain Management and TreatmentCancer Treatment and Pharmacology

The effect of oxcarbazepine in peripheral neuropathic pain depends on pain phenotype: a randomised, double-blind, placebo-controlled phenotype-stratified study

Demant, Dyveke T., Lund, Karen, Vollert, Jan, Maier, Christoph, Segerdahl, Märtha, Finnerup, Nanna B., Jensen, Troels S., Sindrup, Sφren H.·2014·Pain

Abstract

In neuropathic pain it has been suggested that pain phenotype based on putative pain mechanisms may predict response to treatment. This was a randomised, double-blind, placebo-controlled, and phenotype-stratified study with 2 6-week treatment periods of oxcarbazepine (1800-2400mg) and placebo. The primary efficacy measure was change in median pain intensity between baseline and the last week of treatment measured on an 11-point numeric rating scale, and the primary objective was to compare the effect of oxcarbazepine in patients with and without the irritable nociceptor phenotype as defined by hypersensitivity and preserved small nerve fibre function determined by detailed quantitative sensory testing. Ninety-seven patients with peripheral neuropathic pain due to polyneuropathy, surgical or traumatic nerve injury, or postherpetic neuralgia were randomised. The intention-to-treat population comprised 83 patients: 31 with the irritable and 52 with the nonirritable nociceptor phenotype. In the total sample, oxcarbazepine relieved pain of 0.7 points (on a numeric rating scale 0-10; 95% confidence interval [CI] 0.4-1.4) more than placebo (P=0.015) and there was a significant interaction between treatment and phenotype of 0.7 (95% CI 0.01-1.4, P=0.047). The number needed to treat to obtain one patient with more than 50% pain relief was 6.9 (95% CI 4.2-22) in the total sample, 3.9 (95% CI 2.3-12) in the irritable, and 13 (95% CI 5.3-∞) in the nonirritable nociceptor phenotype. In conclusion, oxcarbazepine is more efficacious for relief of peripheral neuropathic pain in patients with the irritable vs the nonirritable nociceptor phenotype.

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Crossref · 10.1016/j.pain.2014.08.014

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Authors
Demant, D. T., Lund, K., Vollert, J., Maier, C., Segerdahl, M., Finnerup, N. B., Jensen, T. S., & Sindrup, S. H.
Affiliations
  • Odense University Hospital (DK)
  • Aarhus University Hospital (DK)
  • BG University Hospital Bergmannsheil Bochum (DE)
  • Lundbeck (Denmark) (DK)
Venue
Pain
Published
2014-11
Volume
155
Issue
11
Pages
2263-2273
ISSN
0304-3959 (ISSN-L)
OpenAlex
W2041635174
Cited by
440
References
36
Citations by year
2026: 18 · 2025: 14 · 2024: 20 · 2023: 28 · 2022: 38 · 2021: 51 · 2020: 59 · 2019: 40 · 2018: 49 · 2017: 42 · 2016: 46 · 2015: 28 · 2014: 3 · 2013: 1
FWCI
26.37
Type
journal article
Language
en
Open access
closed
Locations
  • Pain (publishedVersion)
  • PubMed (publishedVersion)
  • University of Southern Denmark Research Portal (University of Southern Denmark) (submittedVersion)
Funders
  • Pfizer
  • Astellas Pharma
Topics
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
  • Health Sciences › Medicine › Oncology › Cancer Treatment and Pharmacology
Keywords
oxcarbazepine, peripheral neuropathic pain, pain phenotypes, quantitative sensory testing, postherpetic neuralgia, traumatic nerve injury, surgical nerve injury, polyneuropathy, treatment response prediction, pain intensity
MeSH terms
Oxcarbazepine, Adult, Aged, Aged, 80 and over, Carbamazepine, Double-Blind Method, Female, Humans, Male, Middle Aged, Pain, Pain Measurement, Peripheral Nervous System Diseases, Treatment Outcome, Cross-Over Studies, Young Adult, Voltage-Gated Sodium Channel Blockers

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