Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Observational
Official Title: Prospective, Observational Safety Study of Patients With Granulomatosis With Polyangiitis (Wegener's) or Microscopic Polyangiitis Treated With
Brief Summary: This prospective observational study will evaluate the long-term safety of MabThera/Rituxan (rituximab) in participants with granulomatosis with polyangiitis (Wegener's) or microscopic polyangiitis. Data will be collected for a maximum of 4 years from participants initiated on MabThera/Rituxan therapy by their physician according to prescribing information.