Long term azathioprine maintenance therapy in ANCA-associated vasculitis: combined results of long-term follow-up data

We studied whether in ANCA-associated vasculitis patients, duration of AZA maintenance influenced relapse rate during long-term follow-up. . Three hundred and eighty newly diagnosed ANCA-associated vasculitis patients from six European multicentre studies treated with AZA maintenance were included; 58% were male, median age at diagnosis 59.4 years (interquartile range: 48.3–68.2 years); granulomatosis with polyangiitis, n = 236; microscopic...