Disease spectrum of patients with antineutrophil cytoplasmic autoantibodies of defined specificity: distinct differences between patients with anti‐proteinase 3 and anti‐myeloperoxidase autoantibodies

A large divergence was seen in the disease spectrum between patients with anti-PR3 and those with anti-MPO. In particular, extra-renal disease manifestations, granuloma formation and relapses were more prominent in anti-PR3- than in anti-MPO-positive patients.