Evaluation of the Long-Term Safety of Avacopan in Antineutrophil Cytoplasmic Antibody–Associated Vasculitis in the Real World (AvacoStar): Protocol for a Noninterventional Prospective Cohort Study

The AvacoStar study will be the largest European prospective real-world evidence comparative study conducted to date that evaluates the long-term safety of avacopan in severe, active GPA or MPA. This study is expected to yield important insights on the use of avacopan in severe, active GPA or MPA in a real-world setting.