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  • Lundberg, IEKarolinska Institutet (author)

2017 European League Against Rheumatism/American College of Rheumatology classification criteria for adult and juvenile idiopathic inflammatory myopathies and their major subgroups

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-10-27
  • BMJ,2017

Numbers

  • LIBRIS-ID:oai:prod.swepub.kib.ki.se:137151629
  • http://kipublications.ki.se/Default.aspx?queryparsed=id:137151629URI
  • https://doi.org/10.1136/annrheumdis-2017-211468DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • To develop and validate new classification criteria for adult and juvenile idiopathic inflammatory myopathies (IIM) and their major subgroups.MethodsCandidate variables were assembled from published criteria and expert opinion using consensus methodology. Data were collected from 47 rheumatology, dermatology, neurology and paediatric clinics worldwide. Several statistical methods were used to derive the classification criteria.ResultsBased on data from 976 IIM patients (74% adults; 26% children) and 624 non-IIM patients with mimicking conditions (82% adults; 18% children), new criteria were derived. Each item is assigned a weighted score. The total score corresponds to a probability of having IIM. Subclassification is performed using a classification tree. A probability cut-off of 55%, corresponding to a score of 5.5 (6.7 with muscle biopsy) ‘probable IIM’, had best sensitivity/specificity (87%/82% without biopsies, 93%/88% with biopsies) and is recommended as a minimum to classify a patient as having IIM. A probability of ≥90%, corresponding to a score of ≥7.5 (≥8.7 with muscle biopsy), corresponds to ‘definite IIM’. A probability of <50%, corresponding to a score of <5.3 (<6.5 with muscle biopsy), rules out IIM, leaving a probability of ≥50 to <55% as ‘possible IIM’.ConclusionsThe European League Against Rheumatism/American College of Rheumatology (EULAR/ACR) classification criteria for IIM have been endorsed by international rheumatology, dermatology, neurology and paediatric groups. They employ easily accessible and operationally defined elements, and have been partially validated. They allow classification of ‘definite’, ‘probable’ and ‘possible’ IIM, in addition to the major subgroups of IIM, including juvenile IIM. They generally perform better than existing criteria.

Added entries (persons, corporate bodies, meetings, titles ...)

  • Tjarnlund, A (author)
  • Bottai, MKarolinska Institutet (author)
  • Werth, VP (author)
  • Pilkington, C (author)
  • de Visser, M (author)
  • Alfredsson, LKarolinska Institutet (author)
  • Amato, AA (author)
  • Barohn, RJ (author)
  • Liang, MH (author)
  • Singh, JA (author)
  • Aggarwal, R (author)
  • Arnardottir, SKarolinska Institutet (author)
  • Chinoy, H (author)
  • Cooper, RG (author)
  • Danko, K (author)
  • Dimachkie, MM (author)
  • Feldman, BM (author)
  • Garcia-De La Torre, I (author)
  • Gordon, P (author)
  • Hayashi, T (author)
  • Katz, JD (author)
  • Kohsaka, H (author)
  • Lachenbruch, PA (author)
  • Lang, BA (author)
  • Li, YH (author)
  • Oddis, CV (author)
  • Olesinska, M (author)
  • Reed, AM (author)
  • Rutkowska-Sak, L (author)
  • Sanner, H (author)
  • Selva-O'Callaghan, A (author)
  • Song, YW (author)
  • Vencovsky, J (author)
  • Ytterberg, SR (author)
  • Miller, FW (author)
  • Rider, LG (author)
  • Karolinska Institutet (creator_code:org_t)

Related titles

  • In:Annals of the rheumatic diseases: BMJ76:12, s. 1955-19641468-20600003-4967

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