Glucocorticoid use for >6 months reportedly does not improve outcomes and increases infection risk in patients with anti-neutrophil cytoplasmic autoantibody (ANCA) disease. Among 147 patients with ANCA disease, duration of glucocorticoid therapy did not influence time to relapse, relapse-free survival, risk of death or risk of end-stage renal disease, but use of these drugs for >6 months was associated with an increased risk of infection.