| Not Yet Recruiting | TAVNEOS for Otolaryngologic Manifestations of Granulomatosis With Polyangiitis NCT07176546 | Robert Spiera, MD | Phase 2 / Phase 3 |
| Recruiting | Safety and Immunogenicity of the Live Attenuated Tetravalent Butantan-Dengue Vaccine in Autoimmune Rheumatic D NCT07087912 | University of Sao Paulo General Hospital | Phase 4 |
| Recruiting | Obinutuzumab for Remission Induction in Patients With Relapsing PR3-ANCA Granulomatosis With Polyangiitis NCT06940661 | Assistance Publique - Hôpitaux de Paris | Phase 2 |
| Recruiting | Safe Effective Therapy With Low-Dose Glucocorticoid in ANCA-Associated Vasculitis (SAFE-LOW) NCT06983821 | Ottawa Hospital Research Institute | Phase 3 |
| Recruiting | Study of Salvage Therapy to Treat Patients With Granulomatosis With Polyangiitis NCT04871191 | Assistance Publique - Hôpitaux de Paris | Phase 3 |
| Recruiting | Open-label Single-Center Study to Evaluate the Safety and Efficacy of Combining Rituximab and AB-101 in B-cell NCT06581562 | IRIS Research and Development, LLC | Phase 1 |
| Terminated | PR3-AAV Resilient Remission or PRRR NCT05376319 | Mayo Clinic | Phase 2 |
| Unknown | Study on Pharmacokinetics of Meperizumab Injection and NUCALA® in Healthy Male Volunteers NCT05353179 | Chia Tai Tianqing Pharmaceutical Group Co., Ltd. | EARLY_Phase 1 |
| Completed | Establishment of an ELISA for the Recognition of Procalcitonin Variants in Patients With Hyperprocalcitonemia. NCT05703802 | University Hospital Muenster | — |
| Unknown | Comparison of Tofacitinib and Methotrexate in the Maintained Treatment of GPA NCT04944524 | Shanghai Zhongshan Hospital | Phase 4 |
| Completed | Biosimilars of Rituximab in ANCA-associated Vasculitis Compared to the Originator NCT05716334 | McGill University Health Centre/Research Institute of the McGill University Health Centre | — |
| Withdrawn | Natural History of Granulomatosis With Polyangiitis: Clinical and Genetic Biomarkers of Airway Disease NoAAC P NCT03182049 | Vanderbilt University Medical Center | — |
| Completed | PRagmatic Analysis of Vitamin D in ANCA-Associated Vasculitis NCT04280601 | Christian Pagnoux | N/A |
| Active Not Recruiting | TEMPO Study: Trimethoprim-Sulfamethoxazole in Granulomatosis With Polyangiitis NCT03919435 | University of Pennsylvania | Phase 1 / Phase 2 |
| Completed | Low Dose Naltrexone to Improve Physical Health in Patients With Vasculitis NCT03482479 | University of Pennsylvania | Phase 2 |
| Unknown | Rituximab and Belimumab Combination Therapy in PR3 Vasculitis NCT03967925 | Rachel Jones | Phase 2 |
| Completed | Yellow Fever Vaccine in Patients With Rheumatic Diseases NCT03430388 | University of Sao Paulo General Hospital | N/A |
| Completed | Journey of Patients With Vasculitis From First Symptom to Diagnosis NCT03410290 | University of Pennsylvania | — |
| Completed | Abatacept for the Treatment of Relapsing, Non-Severe, Granulomatosis With Polyangiitis (Wegener's) NCT02108860 | University of South Florida | Phase 3 |
| Withdrawn | BIANCA-SC: A Study of the Efficacy, Safety, and Tolerability of Blisibimod in Addition to Methotrexate During NCT01598857 | Anthera Pharmaceuticals | Phase 2 |
| Completed | Pilot Study of Short-Course Glucocorticoids and Rituximab for Treatment of ANCA-Associated Vasculitis NCT02169219 | Massachusetts General Hospital | Phase 4 |
| Unknown | Observation Study of Clinical Manifestation and Outcome in Chinese Patients With Pulmonary Vasculitis NCT02126098 | Peking Union Medical College Hospital | — |
| Active Not Recruiting | The Assessment of Prednisone In Remission Trial (TAPIR) - Patient Centric Approach NCT01933724 | University of South Florida | Phase 3 |
| Completed | The Assessment of Prednisone In Remission Trial - Centers of Excellence Approach NCT01940094 | University of Pennsylvania | Phase 3 |
| Completed | A Phase IIa Study of Intravenous Rituximab in Pediatric Participants With Severe Granulomatosis With Polyangii NCT01750697 | Hoffmann-La Roche | Phase 2 |
| Completed | Comparison Study of Two Rituximab Regimens in the Remission of ANCA Associated Vasculitis NCT01731561 | Assistance Publique - Hôpitaux de Paris | Phase 3 |
| Completed | An Observational Study of The Safety of MabThera/Rituxan (Rituximab) in Participants With Granulomatosis With NCT01613599 | Genentech, Inc. | — |
| Completed | Neutrophils as Prognostic Factors in Granulomatosis With Polyangiitis (Formerly Named Wegener's Granulomatosis NCT01862068 | Assistance Publique - Hôpitaux de Paris | — |
| Terminated | Rituximab for ANCA-associated Vasculitis (RAVE) Long-Term Follow-Up Study NCT01586858 | Johns Hopkins University | — |
| Unknown | Alemtuzumab for ANCA Associated Refractory Vasculitis NCT01405807 | Cambridge University Hospitals NHS Foundation Trust | Phase 4 |
| Unknown | Cardiovascular Involvement in Patients With Granulomatosis With Polyangiitis NCT03782870 | Medical University of Warsaw | — |
| Completed | Longitudinal Protocol for Granulomatosis With Polyangiitis (Wegener's) and Microscopic Polyangiitis NCT00315393 | University of Pennsylvania | — |