Association of HTR2A polymorphisms with chronic widespread pain and the extent of musculoskeletal pain: Results from two population-based cohorts

Barbara I. Nicholl, Kate L. Holliday, Gary J. MacFarlane, Wendy Thomson, Kelly A. Davies, Terence W. O'Neill, Gyorgy Bartfai, Steven Boonen, Felipe F. Casanueva, Joseph D. Finn, Gianni Forti, Aleksander Giwercman, Ilpo T. Huhtaniemi, Krzysztof Kula, Margus Punab, Alan J. Silman, Dirk Vanderschueren, Frederick C.W. Wu, John McBeth

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36 Citations (Scopus)

Abstract

Objective. The aim of the current study was to investigate whether genetic variation in genes across the serotoninergic system is associated with chronic widespread pain (CWP) and the number of pain sites reported. Methods. A discovery cohort, with pain data at 3 time points, was used to investigate genetic associations with 2 phenotypes: 1) CWP (at ≥2 time points; n = 164) compared with pain-free controls (at 3 time points; n = 172), and 2) the maximum number of pain sites reported at any 1 of the 3 time points (range of sites 0-29; n = 989). A cohort of 2,285 men for whom a DNA sampl e and pain data were available (including 203 CWP cases and 929 controls) was used for validation. Pairwise tagging (r2 > 0.8) single-nucleotide polymorphisms (SNPs) were genotyped. Logistic and zero-inflated negative binomial regression analyses were used to test for SNP associations with CWP and the number of pain sites, respectively. Results. SNPs in HTR2A were associated with both pain phenotypes in the discovery cohort, and a number of these SNP associations were replicated in the validation cohort, some of which were attenuated after adjustment for depression. There was an increased likelihood of having CWP in subjects with 1 or 2 copies of the T allele of rs12584920 (odds ratio [OR] 1.64, 95% confidence interval [95% CI] 1.01-2.60 [P = 0.03] in the discovery cohort, and OR 1.46, 95% CI 1.07-2.00 [P = 0.018] in the validation cohort). A similar association was observed between rs17289394 and the maximum number of pain sites reported in both cohorts. Results from a meta-analysis of the data from the 2 cohorts further strengthened these findings. Conclusion. The findings of this study support the role of HTR2A in the genetic predisposition to musculoskeletal pain.

Original languageEnglish
Pages (from-to)810-818
Number of pages9
JournalArthritis and Rheumatism
Volume63
Issue number3
DOIs
Publication statusPublished - Mar 2011

ASJC Scopus subject areas

  • Immunology and Allergy
  • Rheumatology
  • Immunology
  • Pharmacology (medical)

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    Nicholl, B. I., Holliday, K. L., MacFarlane, G. J., Thomson, W., Davies, K. A., O'Neill, T. W., Bartfai, G., Boonen, S., Casanueva, F. F., Finn, J. D., Forti, G., Giwercman, A., Huhtaniemi, I. T., Kula, K., Punab, M., Silman, A. J., Vanderschueren, D., Wu, F. C. W., & McBeth, J. (2011). Association of HTR2A polymorphisms with chronic widespread pain and the extent of musculoskeletal pain: Results from two population-based cohorts. Arthritis and Rheumatism, 63(3), 810-818. https://doi.org/10.1002/art.30185