Abstract
OBJECTIVE: The Outcome Measures in Rheumatology (OMERACT) Vasculitis Working Group seeks to develop validated outcome measures for use in trials for large-vessel vasculitis (LVV). METHODS: An international Delphi exercise conducted among investigators identified items considered important to measure active disease. In parallel, qualitative research with patients was conducted, including interviews and focus groups. RESULTS: Next steps prioritized by the group for LVV include (1) defining disease states (remission, flare, and patient-acceptable symptom state) and (2) selection of patient-reported outcome tools. CONCLUSION: The ultimate goal is to develop an OMERACT-endorsed core set of outcome measures for use in clinical trials of LVV.