Study Status: Terminated
Recruit Status: Terminated
Study Type: Observational
Official Title: Defining Immune Tolerance in ANCA-associated Vasculitis (AAV)
Brief Summary: The goal of the study is to find biological markers (certain proteins or cellular markers found in a blood test) that will inform doctors which patients diagnosed with ANCA-associated vasculitis (AAV) are most likely to be able to stop their medications suppressing their immune systems and remain in remission.