PMID- 37784228 OWN - NLM STAT- MEDLINE DCOM- 20231204 LR - 20231217 IS - 1756-185X (Electronic) IS - 1756-1841 (Linking) VI - 26 IP - 12 DP - 2023 Dec TI - Rituximab induction and reinduction in granulomatosis with polyangiitis and microscopic polyangiitis: A retrospective multicenter study in Taiwan. PG - 2441-2449 LID - 10.1111/1756-185X.14929 [doi] AB - OBJECTIVES: This study aimed to investigate the clinical outcomes of granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA) under rituximab induction and reinduction therapy in Taiwan. METHODS: We performed a retrospective study in patients with GPA or MPA receiving rituximab therapy from August 2008 to July 2020 in seven medical centers in Taiwan. The clinical characteristics and outcomes of these patients were analyzed. RESULTS: In total, 53 patients (18 with GPA and 35 with MPA) were included. Kidney involvement (82.9% vs. 22.2%, p < .001) and initial creatinine (3.25 +/- 2.37 vs. 1.07 +/- 0.82, p < .001) were significantly higher in MPA. Within 24 weeks after the first course of rituximab, there were seven deaths (five due to infection and two due to active disease) in patients with MPA (7/35, 20%) compared to 0 in patients with GPA. Of 33 patients receiving rituximab for kidney involvement, 23 survived and were free from renal replacement therapy at 24 weeks. Their chronic kidney disease (CKD) stages improved in 2 but progressed in 7, while 24 had stable CKD stages. Death or end-stage renal disease (ESRD) was associated with infection and higher initial creatinine. Reinduction therapy for relapse was required in 18 (39.1%) of 46 survivors, which was associated with anti-proteinase 3 (PR3) positive (odds ratio 3.667, p = .049) and younger age with a cutoff of 49.4 (AUC = 0.679, p = .030, sensitivity = 66.67%, specificity = 75%). CONCLUSION: Significant mortality occurred after rituximab induction, especially in patients with MPA. In survivors, age younger than 50 and anti-PR3 positive were associated with the risk of relapse requiring reinduction. CI - (c) 2023 Asia Pacific League of Associations for Rheumatology and John Wiley & Sons Australia, Ltd. FAU - Hsieh, Tsu-Yi AU - Hsieh TY AD - Division of Allergy, Immunology, and Rheumatology, Taichung Veterans General Hospital, Taichung, Taiwan. AD - Department of Medical Education, Taichung Veterans General Hospital, Taichung, Taiwan. FAU - Chen, Ming-Han AU - Chen MH AD - Division of Allergy, Immunology, and Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan. AD - Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan. FAU - Wu, Chen-Ching AU - Wu CC AD - Department of Internal Medicine, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan. FAU - Hong, Wei-Jhe AU - Hong WJ AD - Division of Rheumatology and Immunology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan. FAU - Lu, Cheng-Hsun AU - Lu CH AUID- ORCID: 0000-0002-4794-9438 AD - Division of Rheumatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan. FAU - Lu, Chun-Chi AU - Lu CC AUID- ORCID: 0000-0001-6202-1382 AD - Division of Rheumatology, Immunology, and Allergy, Department of Internal Medicine, Tri-Service General Hospital, Taipei, Taiwan. FAU - Lu, Ling-Ying AU - Lu LY AD - Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan. FAU - Hsieh, Song-Chou AU - Hsieh SC AD - Division of Rheumatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan. FAU - Tsai, Chang-Youh AU - Tsai CY AD - Division of Immunology and Rheumatology, Fu Jen Catholic University Hospital, New Taipei City, Taiwan. AD - School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan. FAU - Wu, Chien-Sheng AU - Wu CS AUID- ORCID: 0000-0003-2815-1743 AD - School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan. AD - Division of Allergy, Immunology, and Rheumatology, Far Eastern Memorial Hospital, New Taipei City, Taiwan. CN - Taiwan Vasculitis Study Group LA - eng PT - Journal Article PT - Multicenter Study DEP - 20231002 PL - England TA - Int J Rheum Dis JT - International journal of rheumatic diseases JID - 101474930 RN - 4F4X42SYQ6 (Rituximab) RN - AYI8EX34EU (Creatinine) RN - EC 3.4.21.76 (Myeloblastin) SB - IM MH - Humans MH - Rituximab/adverse effects MH - *Microscopic Polyangiitis/diagnosis/drug therapy MH - Retrospective Studies MH - *Granulomatosis with Polyangiitis/diagnosis/drug therapy/complications MH - Taiwan MH - Creatinine MH - Myeloblastin MH - *Kidney Failure, Chronic/therapy MH - Recurrence OTO - NOTNLM OT - granulomatosis with polyangiitis OT - induction OT - microscopic polyangiitis OT - reinduction OT - rituximab EDAT- 2023/10/03 06:47 MHDA- 2023/12/04 12:43 CRDT- 2023/10/03 00:13 PHST- 2023/09/12 00:00 [revised] PHST- 2023/04/29 00:00 [received] PHST- 2023/09/14 00:00 [accepted] PHST- 2023/12/04 12:43 [medline] PHST- 2023/10/03 06:47 [pubmed] PHST- 2023/10/03 00:13 [entrez] AID - 10.1111/1756-185X.14929 [doi] PST - ppublish SO - Int J Rheum Dis. 2023 Dec;26(12):2441-2449. doi: 10.1111/1756-185X.14929. Epub 2023 Oct 2.