TY - CHAP M1 - Book, Section TI - Granulomatosis with Polyangiitis A1 - Manno, Rebecca L. A1 - Yazdany, Jinoos A1 - Tarrant, Teresa K. A1 - Kwan, Mildred A2 - Papadakis, Maxine A. A2 - McPhee, Stephen J. A2 - Rabow, Michael W. A2 - McQuaid, Kenneth R. Y1 - 2023 N1 - T2 - Current Medical Diagnosis & Treatment 2023 AB - Key Clinical Updates in Granulomatosis with PolyangiitisAmerican College of Rheumatology/Vasculitis Foundation recommendations favor rituximab as first-line induction therapy. Cyclophosphamide may also be used for induction therapy. Avacopan is FDA-approved as add-on treatment for severe ANCA-associated vasculitis induction therapy in combination with rituximab or cyclophosphamide plus corticosteroids.For nonsevere disease without life- or organ-threatening manifestations, methotrexate up to 25 mg oral or subcutaneous weekly, plus corticosteroids may be effective induction therapy.Rituximab, dosed at a fixed interval of 1 g every 6 months or 500 mg every 4 months, is favored as first-line maintenance treatment.Chung SA et al. Arthritis Rheumatol. [PMID: 34235894]Jayne DRW et al; ADVOCATE Study Group. N Engl J Med. [PMID: 33596356] SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/23 UR - accessmedicine.mhmedical.com/content.aspx?aid=1193125814 ER -