PMID- 36961329 OWN - NLM STAT- MEDLINE DCOM- 20231204 LR - 20231217 IS - 1462-0332 (Electronic) IS - 1462-0324 (Linking) VI - 62 IP - 12 DP - 2023 Dec 1 TI - Association between hypogammaglobulinaemia and severe infections during induction therapy in ANCA-associated vasculitis: from J-CANVAS study. PG - 3924-3931 LID - 10.1093/rheumatology/kead138 [doi] AB - OBJECTIVES: To investigate the association between decreased serum IgG levels caused by remission-induction immunosuppressive therapy of antineutrophil cytoplasmic antibody-associated vasculitis (AAV) and the development of severe infections. METHODS: We conducted a retrospective cohort study of patients with new-onset or severe relapsing AAV enrolled in the J-CANVAS registry, which was established at 24 referral sites in Japan. The minimum serum IgG levels up to 24 weeks and the incidence of severe infection up to 48 weeks after treatment initiation were evaluated. After multiple imputations for all explanatory variables, we performed the multivariate analysis using a Fine-Gray model to assess the association between low IgG (the minimum IgG levels <500 mg/dl) and severe infections. In addition, the association was expressed as a restricted cubic spline (RCS) and analysed by treatment subgroups. RESULTS: Of 657 included patients (microscopic polyangiitis, 392; granulomatosis with polyangiitis, 139; eosinophilic granulomatosis with polyangiitis, 126), 111 (16.9%) developed severe infections. The minimum serum IgG levels were measured in 510 patients, of whom 77 (15.1%) had low IgG. After multiple imputations, the confounder-adjusted hazard ratio of low IgG for the incidence of severe infections was 1.75 (95% confidence interval: 1.03-3.00). The RCS revealed a U-shaped association between serum IgG levels and the incidence of severe infection with serum IgG 946 mg/dl as the lowest point. Subgroup analysis showed no obvious heterogeneity between treatment regimens. CONCLUSION: Regardless of treatment regimens, low IgG after remission-induction treatment was associated with the development of severe infections up to 48 weeks after treatment initiation. CI - (c) The Author(s) 2023. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email: journals.permissions@oup.com. FAU - Omura, Satoshi AU - Omura S AUID- ORCID: 0000-0002-9187-2044 AD - Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. AD - Center for Rheumatic Disease, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. FAU - Kida, Takashi AU - Kida T AUID- ORCID: 0000-0002-5740-8352 AD - Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. FAU - Noma, Hisashi AU - Noma H AUID- ORCID: 0000-0002-2520-9949 AD - Department of Data Science, The Institute of Statistical Mathematics, Tokyo, Japan. FAU - Sunaga, Atsuhiko AU - Sunaga A AD - Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. AD - Center for Rheumatic Disease, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. FAU - Kusuoka, Hiroaki AU - Kusuoka H AD - Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. AD - Center for Rheumatic Disease, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. FAU - Kadoya, Masatoshi AU - Kadoya M AD - Center for Rheumatic Disease, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. FAU - Nakagomi, Daiki AU - Nakagomi D AUID- ORCID: 0000-0003-1682-9799 AD - Department of Rheumatology, University of Yamanashi Hospital, Yamanashi, Japan. FAU - Abe, Yoshiyuki AU - Abe Y AD - Department of Internal Medicine and Rheumatology, Juntendo University, Tokyo, Japan. FAU - Takizawa, Naoho AU - Takizawa N AD - Department of Rheumatology, Chubu Rosai Hospital, Nagoya, Japan. FAU - Nomura, Atsushi AU - Nomura A AD - Immuno-Rheumatology Center, St. Luke's International Hospital, Tokyo, Japan. FAU - Kukida, Yuji AU - Kukida Y AD - Department of Rheumatology, Japanese Red Cross Society Kyoto Daini Hospital, Kyoto, Japan. FAU - Kondo, Naoya AU - Kondo N AD - Department of Nephrology, Kyoto Katsura Hospital, Kyoto, Japan. FAU - Yamano, Yasuhiko AU - Yamano Y AD - Department of Respiratory Medicine and Allergy, Tosei General Hospital, Aichi, Japan. FAU - Yanagida, Takuya AU - Yanagida T AD - Center for Rheumatic Disease, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. AD - Department of Hematology and Rheumatology, Kagoshima University Hospital, Kagoshima, Japan. FAU - Endo, Koji AU - Endo K AD - Department of General Internal Medicine, Tottori Prefectural Central Hospital, Tottori, Japan. FAU - Hirata, Shintaro AU - Hirata S AUID- ORCID: 0000-0002-2474-9943 AD - Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Hiroshima, Japan. FAU - Matsui, Kiyoshi AU - Matsui K AD - Department of Diabetes, Endocrinology and Clinical Immunology, Hyogo Medical University School of Medicine, Hyogo, Japan. FAU - Takeuchi, Tohru AU - Takeuchi T AUID- ORCID: 0000-0002-0065-929X AD - Department of Internal Medicine (IV), Osaka Medical and Pharmaceutical University, Osaka, Japan. FAU - Ichinose, Kunihiro AU - Ichinose K AUID- ORCID: 0000-0001-8794-7106 AD - Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. AD - Department of Rheumatology, Shimane University Faculty of Medicine, Shimane, Japan. FAU - Kato, Masaru AU - Kato M AUID- ORCID: 0000-0002-2023-6585 AD - Department of Rheumatology, Endocrinology and Nephrology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan. FAU - Yanai, Ryo AU - Yanai R AD - Division of Rheumatology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan. FAU - Matsuo, Yusuke AU - Matsuo Y AD - Department of Rheumatology, Tokyo Kyosai Hospital, Tokyo, Japan. AD - Department of Rheumatology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Shimojima, Yasuhiro AU - Shimojima Y AUID- ORCID: 0000-0001-7100-1121 AD - Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan. FAU - Nishioka, Ryo AU - Nishioka R AUID- ORCID: 0000-0001-8654-7311 AD - Department of Rheumatology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan. FAU - Okazaki, Ryota AU - Okazaki R AD - Division of Respiratory Medicine and Rheumatology, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University, Yonago, Japan. FAU - Takata, Tomoaki AU - Takata T AD - Division of Gastroenterology and Nephrology, Tottori University, Yonago, Japan. FAU - Ito, Takafumi AU - Ito T AD - Division of Nephrology, Shimane University Hospital, Shimane, Japan. FAU - Moriyama, Mayuko AU - Moriyama M AD - Department of Rheumatology, Shimane University Faculty of Medicine, Shimane, Japan. FAU - Takatani, Ayuko AU - Takatani A AD - Rheumatic Disease Center, Sasebo Chuo Hospital, Nagasaki, Japan. FAU - Miyawaki, Yoshia AU - Miyawaki Y AD - Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. FAU - Ito-Ihara, Toshiko AU - Ito-Ihara T AD - The Clinical and Translational Research Center, University Hospital, Kyoto Prefectural University of Medicine, Kyoto, Japan. FAU - Yajima, Nobuyuki AU - Yajima N AUID- ORCID: 0000-0002-8292-3962 AD - Department of Rheumatology, Endocrinology and Nephrology, Graduate School of Medicine, Hokkaido University, Sapporo, Japan. AD - Department of Healthcare Epidemiology, Kyoto University Graduate School of Medicine and Public Health, Kyoto, Japan. AD - Center for Innovative Research for Communities and Clinical Excellence, Fukushima Medical University, Fukushima, Japan. FAU - Kawaguchi, Takashi AU - Kawaguchi T AD - Department of Practical Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan. FAU - Fukuda, Wataru AU - Fukuda W AD - Center for Rheumatic Disease, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan. FAU - Kawahito, Yutaka AU - Kawahito Y AD - Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan. LA - eng GR - Japan Society for the Promotion of Science/ GR - JP22K16348/KAKENHI/ PT - Journal Article PL - England TA - Rheumatology (Oxford) JT - Rheumatology (Oxford, England) JID - 100883501 RN - 0 (Immunoglobulin G) RN - 0 (Antibodies, Antineutrophil Cytoplasmic) SB - IM MH - Humans MH - *Granulomatosis with Polyangiitis/drug therapy MH - *Churg-Strauss Syndrome MH - Retrospective Studies MH - *Agammaglobulinemia/chemically induced MH - Induction Chemotherapy MH - *Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/drug therapy MH - *Microscopic Polyangiitis/drug therapy MH - Immunoglobulin G/therapeutic use MH - Antibodies, Antineutrophil Cytoplasmic OTO - NOTNLM OT - ANCA-associated vasculitis OT - IgG OT - cumulative incidence function OT - hypogammaglobulinaemia OT - interaction OT - restricted cubic splines OT - severe infections EDAT- 2023/03/25 06:00 MHDA- 2023/12/04 12:41 CRDT- 2023/03/24 10:08 PHST- 2022/10/14 00:00 [received] PHST- 2023/03/15 00:00 [accepted] PHST- 2023/12/04 12:41 [medline] PHST- 2023/03/25 06:00 [pubmed] PHST- 2023/03/24 10:08 [entrez] AID - 7085588 [pii] AID - 10.1093/rheumatology/kead138 [doi] PST - ppublish SO - Rheumatology (Oxford). 2023 Dec 1;62(12):3924-3931. doi: 10.1093/rheumatology/kead138.