Drug-associated antineutrophil cytoplasmic antibody–positive vasculitis: Prevalence among patients with high titers of antimyeloperoxidase antibodies

Abstract

These data suggest that a sizable proportion of cases of APV with high titers of anti-MPO antibodies are drug-associated, especially following exposure to hydralazine or propylthiouracil. We recommend that the use of these drugs should be sought in cases of anti-MPO-positive vasculitis, particularly among patients with high titers of these antibodies.