title: Update on Outcome Measure Development for Large Vessel Vasculitis: Report from OMERACT 12.
abstract: OBJECTIVE
  The rarity of large vessel vasculitis (LVV) is a major factor limiting randomized controlled trials in LVV, resulting in treatment choices in these diseases that are guided mainly by observational studies and expert opinion. Further complicating trials in LVV is the absence of validated and meaningful outcome measures. The Outcome Measures in Rheumatology (OMERACT) vasculitis working group initiated the Large Vessel Vasculitis task force in 2009 to develop data-driven, validated outcome tools for clinical investigation in LVV. This report summarizes the progress that has been made on a disease activity assessment tool and patient-reported outcomes in LVV as well as the group's research agenda.
  
  
  METHODS
  The OMERACT LVV task force brought an international group of investigators and patient research partners together to work collaboratively on developing outcome tools. The group initially focused on disease activity assessment tools in LVV. Following a systematic literature review, an international Delphi exercise was conducted to obtain expert opinion on principles and domains for disease assessment. The OMERACT vasculitis working group's LVV task force is also conducting qualitative research with patients, including interviews, focus groups, and engaging patients as research partners, all to ensure that the approach to disease assessment includes measures of patients' perspectives and that patients have input into the research agenda and process.
  
  
  RESULTS
  The preliminary results of both the Delphi exercise and the qualitative interviews were discussed at the OMERACT 12 (2014) meeting and the completion of the analyses will produce an initial set of domains and instruments to form the basis of next steps in the research agenda.
  
  
  CONCLUSIONS
  The research agenda continues to evolve, with the ultimate goal of developing an OMERACT-endorsed core set of outcome measures for use in clinical trials of LVV.
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Sibel Zehra
authors.initials: SZ
authors.lastname: Aydin
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Haner
authors.initials: H
authors.lastname: Direskeneli
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Antoine
authors.initials: A
authors.lastname: Sreih
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Fatma
authors.initials: F
authors.lastname: Alibaz-Oner
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Ahmet
authors.initials: A
authors.lastname: Gul
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Sevil
authors.initials: S
authors.lastname: Kamali
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Gulen
authors.initials: G
authors.lastname: Hatemi
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Tanaz
authors.initials: T
authors.lastname: Kermani
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Mackie
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Alfred
authors.initials: A
authors.lastname: Mahr
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Alexa
authors.initials: A
authors.lastname: Meara
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Nataliya
authors.initials: N
authors.lastname: Milman
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Heidi
authors.initials: H
authors.lastname: Nugent
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Joanna
authors.initials: J
authors.lastname: Robson
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Gunnar
authors.initials: G
authors.lastname: Tomasson
authors.affiliation: From the Division of Rheumatology, Koc University Faculty of Medicine, Istanbul; Division of Rheumatology, Marmara University Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, and Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine, Istanbul, Turkey; Division of Rheumatology, University of California, Los Angeles, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Department of Internal Medicine, University Paris Diderot, Paris, France; Division of Rheumatology, Ohio State University, Columbus, Ohio, USA; Division of Rheumatology, University of Ottawa, Ottawa, Ontario, Canada; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Department of Public Health Sciences, University of Iceland, Reykjavik, Iceland.S.Z. Aydin, MD, Associate Professor, Division of Rheumatology, Koc University Faculty of Medicine; H. Direskeneli, MD, Professor of Rheumatology, Division of Rheumatology, Marmara University Faculty of Medicine; A. Sreih, MD, Assistant Professor of Medicine, Division of Rheumatology, University of Pennsylvania; F. Alibaz-Oner, MD, Division of Rheumatology, Marmara University Faculty of Medicine; A. Gul, Professor, Division of Rheumatology, Istanbul University Istanbul Faculty of Medicine; S. Kamali, Professor, Division of Rheumatology, Marmara University Faculty of Medicine; G. Hatemi, Associate Professor, Division of Rheumatology, Istanbul University Cerrahpasa Faculty of Medicine; T. Kermani, MD, MS, Assistant Clinical Professor, Division of Rheumatology, University of California at Los Angeles; S.L. Mackie, BM, BCh, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; A. Mahr, MD, PhD, Professo
authors.forename: Peter A
authors.initials: PA
authors.lastname: Merkel
mesh_terms: D003245:Consensus Statements as Topic; D003697:Delphi Technique; D005260:Female; D017144:Focus Groups; D013700:Giant Cell Arteritis / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D008297:Male; D017063:Outcome Assessment, Health Care; D017410:Practice Guidelines as Topic; D036301:Qualitative Research; D011859:Radiography; D012720:Severity of Illness Index; D013625:Takayasu Arteritis / Q000000981:diagnostic imaging / Q000628:therapy*; D014657:Vasculitis / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000628:therapy
keywords: GIANT CELL ARTERITIS; LARGE VESSEL; OUTCOMES; TAKAYASU ARTERITIS; VASCULITIS