Study Status: Active, not recruiting
Recruit Status: Active, not recruiting
Study Type: Interventional
Official Title: A Phase IIA, International, Multicenter, Open-label, Uncontrolled Study to Evaluate The Safety And Pharmacokinetics of 4 × 375 mg/m2 Intravenous Rituximab in Pediatric Patients With Severe
Brief Summary: This Phase IIa international multicenter, open-label, uncontrolled study will evaluate the safety and pharmacokinetics of rituximab (MabThera/Rituxan) in pediatric participants with severe granulomatosis with polyangiitis (GPA) or microscopic polyangiitis (MPA). Participants will receive rituximab 375 milligrams per square meter (mg/m^2) intravenously (IV) on Days 1, 8, 15 and 22.