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COMT genotype and non-recovery after a whiplash injury in a Northern European population
Karolinska Inst, Sodersjukhuset, Dept Clin Sci & Educ, S-11883 Stockholm, SE, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neuro-psycho-pharmacology.
Karolinska Inst, Sodersjukhuset, Dept Clin Sci & Educ, S-11883 Stockholm, SE, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Neuro-psycho-pharmacology.
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2017 (English)In: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 18, article id 507Article in journal (Refereed) Published
Abstract [en]

Background: The COMT (Catechol-O-Methyl Transferase) gene may influence a person's vulnerability to develop long-term pain and some COMT single nucleotide polymorphisms (SNPs) may associate with patterns of acute or chronic pain. Many patients with whiplash-associated disorders (WADs) suffer from long-term pain and other related symptoms, but it is less known if genetic factors play a role in the recovery process. The primary aim of this study was to evaluate whether self-reported non-recovery, including pain, was related to COMT genotype in patients with WAD. The secondary aim was to investigate whether or not background factors, including mental health, were related to genotype and non-recovery.

Methods: A total of 133 patients with neck pain after a whiplash trauma were included. Background factors were collected and blood samples were taken during the acute phase after the accident. DNA was isolated from blood and used to genotype the SNPs rs6269, rs4633, rs4818 and rs4680 in the COMT gene; additionally haplotypes were estimated and haplogenotypes inferred. The patients were followed up after 12 months and asked to rate their recovery including pain, mental health and quality of life.

Results: The overall reported non-recovery rate at 12 months was 44% with no significant differences in distribution of the COMT haplotypes. High levels of self-reported pain (OR 7.2) and anxiety (OR 4.4) after the accident were associated with non-recovery, but not related to the haplotypes. None of the other background factors were related to the haplotypes or non-recovery.

Conclusion: No association between self-reported non-recovery or pain levels and COMT haplotypes in patients with acute whiplash injuries could be detected. Independent replications are necessary to discard the hypothesis that COMT haplotypes do not influence non-recovery or pain levels in patients with acute whiplash injuries. High levels of initial pain and anxiety were associated with non-recovery, thereby confirming previously published reports.

Place, publisher, year, edition, pages
2017. Vol. 18, article id 507
Keywords [en]
Whiplash, Wad, COMT, Catechol O-methyltransferase, Pain, Genetics, Recovery
National Category
Rheumatology and Autoimmunity
Identifiers
URN: urn:nbn:se:uu:diva-344219DOI: 10.1186/s12891-017-1810-zISI: 000416964000002PubMedID: 29195501OAI: oai:DiVA.org:uu-344219DiVA, id: diva2:1188003
Available from: 2018-03-06 Created: 2018-03-06 Last updated: 2018-03-06Bibliographically approved

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Comasco, ErikaOreland, Lars

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