Evaluation and validation of biomarkers in granulomatosis with polyangiitis and microscopic polyangiitis

BackgroundStudies in anti-neutrophil cytoplasm antibody (ANCA)–associated vasculitis (AAV) have revealed promising biomarkers. The aim of our study was to validate the most encouraging markers of granulomatosis with polyangiitis and microscopic polyangiitis identified by literature search and to create biomarker panels.