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EULAR recommendations for conducting clinical studies and/or clinical trials in systemic vasculitis: focus on anti-neutrophil cytoplasm antibody-associated vasculitis Hellmich B; Flossmann O; Gross WL; Bacon P; Cohen-Tervaert JW; Guillevin L; Jayne D; Mahr A; Merkel PA; Raspe H; Scott DG; Witter J; Yazici H; Luqmani RAAnn Rheum Dis 2007[May]; 66 (5): 605-17OBJECTIVES: To develop the European League Against Rheumatism (EULAR) recommendations for conducting clinical studies and/or clinical trials in systemic vasculitis. METHODS: An expert consensus group was formed consisting of rheumatologists, nephrologists and specialists in internal medicine representing five European countries and the USA, a clinical epidemiologist and representatives from regulatory agencies. Using an evidence-based and expert opinion-based approach in accordance with the standardised EULAR operating procedures, the group identified nine topics for a systematic literature search through a modified Delphi technique. On the basis of research questions posed by the group, recommendations were derived for conducting clinical studies and/or clinical trials in systemic vasculitis. RESULTS: Based on the results of the literature research, the expert committee concluded that sufficient evidence to formulate guidelines on conducting clinical trials was available only for anti-neutrophil cytoplasm antibody-associated vasculitides (AAV). It was therefore decided to focus the recommendations on these diseases. Recommendations for conducting clinical trials in AAV were elaborated and are presented in this summary document. It was decided to consider vasculitis-specific issues rather than general issues of trial methodology. The recommendations deal with the following areas related to clinical studies of vasculitis: definitions of disease, activity states, outcome measures, eligibility criteria, trial design including relevant end points, and biomarkers. A number of aspects of trial methodology were deemed important for future research. CONCLUSIONS: On the basis of expert opinion, recommendations for conducting clinical trials in AAV were formulated. Furthermore, the expert committee identified a strong need for well-designed research in non-AAV systemic vasculitides.|*Guidelines as Topic[MESH]|Antibodies/*immunology[MESH]|Biomarkers/analysis[MESH]|Clinical Trials as Topic/*standards[MESH]|Cytoplasm/*immunology[MESH]|Europe[MESH]|Humans[MESH]|International Cooperation[MESH]|Neutrophils/*immunology[MESH]|Quality of Life[MESH]|Recurrence[MESH]|Remission Induction[MESH]|Research Design/standards[MESH]|Treatment Outcome[MESH]|Vasculitis/diagnosis/immunology/*therapy[MESH] |
