Disease and treatment-related morbidity in young and elderly patients with granulomatosis with polyangiitis and microscopic polyangiitis

Aging may be a risk factor for morbidity in anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). We compared the rate and better characterized the type of disease- and treatment-related complications affecting young and elderly patients with AAV. All new cases of granulomatosis with polyangiitis or microscopic polyangiitis diagnosed in three referral centers between 2000–2016 were included. Patients were stratified by age...