| Recruiting | Vasculitis Pregnancy Registry NCT02593565 | University of Pennsylvania | — |
| Completed | Abatacept for the Treatment of Relapsing, Non-Severe, Granulomatosis With Polyangiitis (Wegener's) NCT02108860 | University of South Florida | Phase 3 |
| Completed | Induction of Regulatory t Cells by Low Dose il2 in Autoimmune and Inflammatory Diseases NCT01988506 | Assistance Publique - Hôpitaux de Paris | Phase 2 |
| Completed | Reproductive Health in Men and Women With Vasculitis NCT02176070 | University of South Florida | — |
| Unknown | American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) Diagnostic and Classification NCT01066208 | University of Oxford | — |
| Completed | Study of One Protein Implicated in Wegener Disease NCT01167491 | Assistance Publique - Hôpitaux de Paris | N/A |
| Terminated | Interventional Cryotherapy for the Eradication of Benign Airway Disease ("ICE the BAD") NCT00747461 | CSA Medical, Inc. | Phase 4 |
| Completed | Abatacept in Treating Adults With Mild Relapsing Wegener's Granulomatosis NCT00468208 | University of Pennsylvania | Phase 1 / Phase 2 |
| Completed | Treatment of Necrotizing Vasculitides for Patients Older Than 65 Years NCT00307671 | Assistance Publique - Hôpitaux de Paris | Phase 4 |
| Completed | Rituximab for the Treatment of Wegener's Granulomatosis and Microscopic Polyangiitis NCT00104299 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 2 / Phase 3 |
| Completed | Mycophenolate Mofetil for Treatment of Relapses of Wegener's Disease or Microscopic Polyangiitis (MPA) NCT00103792 | University Medical Center Groningen | Phase 3 |
| Completed | RATTRAP: Infliximab Versus Rituximab in Systemic Necrotizing Vasculitides NCT00307593 | Assistance Publique - Hôpitaux de Paris | N/A |
| Completed | Phase II Study on Gusperimus in Patients With Refractory Wegener's Granulomatosis NCT00530075 | Nippon Kayaku Co., Ltd. | Phase 2 |
| Completed | An Open Label Pilot Study Examining the Use of Rituximab in Patients With Wegener's Granulomatosis Who Have Ex NCT00072592 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 |
| Completed | Anti-Cytokine Therapy for Vasculitis NCT00753103 | University Hospital Birmingham NHS Foundation Trust | Phase 2 |
| Completed | Daclizumab to Treat Wegener's Granulomatosis NCT00040248 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 2 |
| Completed | Etanercept for Wegener's Granulomatosis NCT00005007 | National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) | Phase 2 / Phase 3 |
| Completed | Prevention of Glucocorticoid-Induced Osteoporosis in Rheumatic Diseases: Alendronate Versus Alfacalcidol. NCT00138983 | UMC Utrecht | Phase 3 |
| Unknown | Autologous Peripheral Blood Stem Cell Transplantation in Patients With Life Threatening Autoimmune Diseases NCT00006055 | Fairview University Medical Center | N/A |
| Completed | Comparison of Treatments to Maintain Disease Remission in Patients With Wegener's Granulomatosis and Related V NCT00004567 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 2 |
| Completed | Etanercept to Treat Wegener's Granulomatosis NCT00001901 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 2 |
| Completed | Mycophenolate Mofetil to Treat Wegener's Granulomatosis and Related Vascular Inflammatory Conditions NCT00001764 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 |
| Completed | Phase I Trial of Recombinant Human Interleukin-10 (SCH 52000) in Patients With Wegener's Granulomatosis NCT00001761 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 1 |
| Completed | Pulse Versus Continuous Cyclophosphamide for Induction of Remission in ANCA-Associated Vasculitides NCT00430105 | Cambridge University Hospitals NHS Foundation Trust | Phase 2 / Phase 3 |
| Completed | Assessment of Lung Inflammation in Patients With Atopic Asthma Using Positron Emission Tomography NCT00001759 | National Institute of Allergy and Infectious Diseases (NIAID) | — |
| Completed | Analysis of Bronchial Tissue and Fluid in Patients With Wegener's Granulomatosis NCT00001541 | National Institute of Allergy and Infectious Diseases (NIAID) | — |
| Completed | Diagnostic Effectiveness of Virtual Bronchoscopy NCT00001515 | National Institutes of Health Clinical Center (CC) | Phase 1 |
| Terminated | Plasma Exchange for Renal Vasculitis NCT01408836 | Cambridge University Hospitals NHS Foundation Trust | Phase 2 / Phase 3 |
| Completed | Cyclophosphamide and Prednisone Followed by Methotrexate To Treat Vasculitides NCT00001473 | National Institute of Allergy and Infectious Diseases (NIAID) | — |
| Completed | Steroids and Methotrexate to Treat Systemic Vasculitis NCT00001256 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 2 |
| Completed | Treatment of Wegener's Granulomatosis With Cyclophosphamide NCT00001155 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 2 |
| Unknown | Cyclophosphamide Versus Methotrexate for Remission Maintenance in Systemic Necrotizing Vasculitides NCT00751517 | University of Parma | Phase 2 |