PMID- 36197746 OWN - NLM STAT- MEDLINE DCOM- 20231108 LR - 20231108 IS - 1439-7609 (Electronic) IS - 1439-7595 (Linking) VI - 33 IP - 6 DP - 2023 Nov 1 TI - Chemoprophylaxis against Pneumocystis jirovecii pneumonia in Japanese patients with ANCA-associated vasculitis: An observational study. PG - 1137-1144 LID - 10.1093/mr/roac124 [doi] AB - OBJECTIVES: This study investigated the current practice of prophylactic treatment against Pneumocystis jirovecii pneumonia (PCP) and its effectiveness in patients with anti-neutrophil cytoplasmic antibody-associated vasculitis (AAV). METHODS: This study included 319 patients registered from 53 institutions in Japan and newly diagnosed with AAV. During the 2-year observation period, we examined the frequency of usage, effectiveness and safety of prophylactic drugs against PCP. RESULTS: Most patients received prophylactic drugs against PCP with the initiation of immunosuppressive agents, and >50% of them remained on chemoprophylaxis against PCP at 2 years after. The initial daily dose of oral prednisolone and the proportion of cyclophosphamide administration were higher in patients who received chemoprophylaxis against PCP than in those who did not. PCP occurred in nine patients (3%) and resulted in the death of four. The incidence rate of PCP in patients who received chemoprophylaxis was 1.13/100 patient-years (95% confidence interval, 0.38-2.68) and that in those who did not was 2.74 (1.04-6.02). The incidence rate ratio was 0.41 (0.11-1.53). CONCLUSIONS: The markedly low incidence of PCP may be attributed to the continuous chemoprophylaxis against PCP received by >50% of Japanese patients with AAV, although the effectiveness of chemoprophylaxis against PCP was not statistically confirmed. CI - (c) Japan College of Rheumatology 2022. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Nakaya, Izaya AU - Nakaya I AD - Department of Nephrology and Rheumatology, Iwate Prefectural Central Hospital, Morioka, Japan. FAU - Sada, Ken-Ei AU - Sada KE AUID- ORCID: 0000-0003-1020-0818 AD - Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. AD - Department of Clinical Epidemiology, Kochi Medical School, Kochi University, Nankoku, Japan. FAU - Harigai, Masayoshi AU - Harigai M AUID- ORCID: 0000-0002-6418-2603 AD - Department of Rheumatology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan. FAU - Soma, Jun AU - Soma J AD - Department of Nephrology and Rheumatology, Iwate Prefectural Central Hospital, Morioka, Japan. FAU - Amano, Koichi AU - Amano K AD - Department of Rheumatology and Clinical Immunology, Saitama Medical Centre, Saitama Medical University, Saitama, Japan. FAU - Dobashi, Hiroaki AU - Dobashi H AD - Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University, Miki, Japan. FAU - Atsumi, Tatsuya AU - Atsumi T AD - Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine, Hokkaido University, Sapporo, Japan. FAU - Yuzawa, Yukio AU - Yuzawa Y AD - Department of Nephrology, Fujita Health University School of Medicine, Toyoake, Japan. FAU - Fujimoto, Shouichi AU - Fujimoto S AD - Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, Miyazaki University, Miyazaki, Japan. FAU - Sugihara, Takahiko AU - Sugihara T AD - Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan. AD - Division of Rheumatology & Allergology, Department of Internal Medicine, St. Marianna University School of Medicine, Kawasaki, Japan. FAU - Takasaki, Yoshinari AU - Takasaki Y AD - Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan. FAU - Arimura, Yoshihiro AU - Arimura Y AD - Nephrology and Rheumatology, First Department of Internal Medicine, Kyorin University School of Medicine, Tokyo, Japan. AD - Department of Internal Medicine, Kichijoji Asahi Hospital, Tokyo, Japan. FAU - Makino, Hirofumi AU - Makino H AD - The president, Okayama University, Okayama, Japan. LA - eng PT - Journal Article PT - Observational Study PL - England TA - Mod Rheumatol JT - Modern rheumatology JID - 100959226 RN - 0 (Immunosuppressive Agents) SB - IM MH - Humans MH - *Pneumonia, Pneumocystis/etiology MH - East Asian People MH - *Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/drug therapy MH - Immunosuppressive Agents/therapeutic use MH - Chemoprevention/adverse effects MH - *Pneumocystis carinii OTO - NOTNLM OT - Anti-neutrophil cytoplasm antibody OT - granulomatosis with polyangiitis OT - infection OT - microscopic polyangiitis OT - systemic vasculitis EDAT- 2022/10/06 06:00 MHDA- 2023/11/08 06:42 CRDT- 2022/10/05 12:32 PHST- 2022/08/22 00:00 [received] PHST- 2022/09/29 00:00 [accepted] PHST- 2023/11/08 06:42 [medline] PHST- 2022/10/06 06:00 [pubmed] PHST- 2022/10/05 12:32 [entrez] AID - 6748927 [pii] AID - 10.1093/mr/roac124 [doi] PST - ppublish SO - Mod Rheumatol. 2023 Nov 1;33(6):1137-1144. doi: 10.1093/mr/roac124.