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J Rheumatol. 2019 Feb;46(2):190-197. doi: 10.3899/jrheum.180168. Epub 2018 Oct 1.

Toward New Classification Criteria for Juvenile Idiopathic Arthritis: First Steps, Pediatric Rheumatology International Trials Organization International Consensus.

Author information

1
From Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Direzione Scientifica; IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, Pediatric Rheumatology International Trials Organization (PRINTO), and Università degli Studi di Genova; IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica, Genoa, Italy; University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology, Ljubljana, Slovenia; Department of Paediatric Rheumatology, Alder Hey Children's National Health Service (NHS) Foundation Trust; Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Hospital General de Mexico, Departamento de Reumatología, Mexico City, Mexico; Hospital Pedro de Elizalde, Rheumatology Section, Buenos Aires, Argentina; Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics, New Hyde Park, New York; Cincinnati Children's Hospital Medical Center, Division of Rheumatology, Cincinnati, Ohio; Seattle Children's Hospital, Seattle, Washington, USA; Jaslok Hospital and Research Centre, Department of Paediatrics, Mumbai, India; The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto, Toronto, Ontario; British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada; Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology, Utrecht, the Netherlands. albertomartini@gaslini.org.
2
A. Martini, MD, Professor, IRCCS Istituto Giannina Gaslini, Direzione Scientifica; A. Ravelli, MD, Professor, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia and Università degli Studi di Genova; T. Avcin, MD, PhD, University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology; M.W. Beresford, MBChB, PhD, Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, and Institute of Translational Medicine, University of Liverpool; R. Burgos-Vargas, MD, Hospital General de Mexico, Departamento de Reumatología; R. Cuttica, MD, Hospital Pedro de Elizalde, Rheumatology Section; N.T. Ilowite, MD, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics; R. Khubchandani, MD, Jaslok Hospital and Research Centre, Department of Paediatrics; R.M. Laxer, MD, The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto; D.J. Lovell, MD, MPH, Cincinnati Children's Hospital Medical Center, Division of Rheumatology; R.E. Petty, MD, PhD, British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia; C.A. Wallace, MD, Seattle Children's Hospital; N.M. Wulffraat, MD, PhD, Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology; A. Pistorio, MD, PhD, IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica; N. Ruperto, MD, MPH, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, PRINTO. albertomartini@gaslini.org.
3
From Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Giannina Gaslini, Direzione Scientifica; IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, Pediatric Rheumatology International Trials Organization (PRINTO), and Università degli Studi di Genova; IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica, Genoa, Italy; University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology, Ljubljana, Slovenia; Department of Paediatric Rheumatology, Alder Hey Children's National Health Service (NHS) Foundation Trust; Institute of Translational Medicine, University of Liverpool, Liverpool, UK; Hospital General de Mexico, Departamento de Reumatología, Mexico City, Mexico; Hospital Pedro de Elizalde, Rheumatology Section, Buenos Aires, Argentina; Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics, New Hyde Park, New York; Cincinnati Children's Hospital Medical Center, Division of Rheumatology, Cincinnati, Ohio; Seattle Children's Hospital, Seattle, Washington, USA; Jaslok Hospital and Research Centre, Department of Paediatrics, Mumbai, India; The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto, Toronto, Ontario; British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada; Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology, Utrecht, the Netherlands.
4
A. Martini, MD, Professor, IRCCS Istituto Giannina Gaslini, Direzione Scientifica; A. Ravelli, MD, Professor, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia and Università degli Studi di Genova; T. Avcin, MD, PhD, University Children's Hospital, University Medical Center Ljubljana, Department of Allergology, Rheumatology and Clinical Immunology; M.W. Beresford, MBChB, PhD, Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, and Institute of Translational Medicine, University of Liverpool; R. Burgos-Vargas, MD, Hospital General de Mexico, Departamento de Reumatología; R. Cuttica, MD, Hospital Pedro de Elizalde, Rheumatology Section; N.T. Ilowite, MD, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Pediatrics; R. Khubchandani, MD, Jaslok Hospital and Research Centre, Department of Paediatrics; R.M. Laxer, MD, The Hospital for Sick Children, Division of Rheumatology, Department of Paediatrics, University of Toronto; D.J. Lovell, MD, MPH, Cincinnati Children's Hospital Medical Center, Division of Rheumatology; R.E. Petty, MD, PhD, British Columbia Children's Hospital, Department of Pediatrics, University of British Columbia; C.A. Wallace, MD, Seattle Children's Hospital; N.M. Wulffraat, MD, PhD, Wilhelmina Children's Hospital, Department of Pediatric Immunology and Rheumatology; A. Pistorio, MD, PhD, IRCCS Istituto Giannina Gaslini, Servizio di Epidemiologia e Biostatistica; N. Ruperto, MD, MPH, IRCCS Istituto Giannina Gaslini, Clinica Pediatrica e Reumatologia, PRINTO.

Abstract

OBJECTIVE:

To revise the current juvenile idiopathic arthritis (JIA) International League of Associations for Rheumatology (ILAR) classification criteria with an evidence-based approach, using clinical and routine laboratory measures available worldwide, to identify homogeneous clinical groups and to distinguish those forms of chronic arthritis typically seen only in children from the childhood counterpart of adult diseases.

METHODS:

The overall project consists of 4 steps. This work represents Step 1, a Delphi Web-based consensus and Step 2, an international nominal group technique (NGT) consensus conference for the new provisional Pediatric Rheumatology International Trials Organization JIA classification criteria. A future large data collection of at least 1000 new-onset JIA patients (Step 3) followed by analysis and NGT consensus (Step 4) will provide data for the evidence-based validation of the JIA classification criteria.

RESULTS:

In Step 1, three Delphi rounds of interactions were implemented to revise the 7 ILAR JIA categories. In Step 2, forty-seven questions with electronic voting were implemented to derive the new proposed criteria. Four disorders were proposed: (a) systemic JIA; (b) rheumatoid factor-positive JIA; (c) enthesitis/spondylitis-related JIA; and (d) early-onset antinuclear antibody-positive JIA. The other forms were gathered under the term "others." These will be analyzed during the prospective data collection using a list of descriptors to see whether the clustering of some of them could identify homogeneous entities.

CONCLUSION:

An international consensus was reached to identify different proposed homogeneous chronic disorders that fall under the historical term JIA. These preliminary criteria will be formally validated with a dedicated project.

KEYWORDS:

ANTINUCLEAR ANTIBODIES; AUTOIMMUNE DISEASES; JUVENILE IDIOPATHIC ARTHRITIS

PMID:
30275259
DOI:
10.3899/jrheum.180168
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