PMID- 33184057 OWN - NLM STAT- MEDLINE DCOM- 20211109 LR - 20211109 IS - 1708-8267 (Electronic) IS - 1081-5589 (Linking) VI - 69 IP - 1 DP - 2021 Jan TI - Serum granzyme B is associated with otorhinolaryngological, pulmonary, and renal involvement of antineutrophil cytoplasmic antibody-associated vasculitis. PG - 91-95 LID - 10.1136/jim-2020-001365 [doi] AB - We investigated whether serum granzyme B (GrB) can reflect the inflammatory burden such as cross-sectional disease activity and organ-specific involvement in immunosuppressive drug-naive patients with antineutrophil cytoplasmic antibody-associated vasculitis (AAV). Seventy-eight immunosuppressive drug-naive patients with AAV were included in this study. At the time of the first classification, whole blood was obtained from each patient and sera was immediately isolated and stored at - 80℃. On the day of the blood sampling, we performed routine laboratory tests including antineutrophil cytoplasmic antibody tests and collected both clinical and laboratory data. AAV-specific indices included Birmingham Vasculitis Activity Score (BVAS) and Five-Factor Score (FFS). The median age of patients with AAV was 62 years and 26 patients were men. Serum GrB was not associated with the cross-sectional BVAS; however, patients with serum GrB positivity exhibited higher frequencies of otorhinolaryngological manifestation than those without (p=0.037). When serum GrB levels were compared after dividing the patients into two groups based on the presence of organ-specific involvement, patients with pulmonary involvement exhibited a significantly higher serum GrB than those without (p=0.042). On the other hand, patients with renal involvement showed a significantly lower serum GrB than those without (p=0.023). In addition, serum GrB was inversely correlated with the cross-sectional FFS (r=-0.249, p=0.028). Even though serum GrB could not reflect the inflammatory burden of AAV, serum GrB was associated with otorhinolaryngological, pulmonary, and renal involvement in immunosuppressive drug-naive patients with AAV. CI - (c) American Federation for Medical Research 2021. No commercial re-use. See rights and permissions. Published by BMJ. FAU - Yoon, Taejun AU - Yoon T AD - Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of). FAU - Yoo, Juyoung AU - Yoo J AD - Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of). FAU - Ahn, Sung Soo AU - Ahn SS AD - Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of). FAU - Song, Jason Jungsik AU - Song JJ AD - Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of). AD - Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea (the Republic of). FAU - Park, Yong-Beom AU - Park YB AD - Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of). AD - Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea (the Republic of). FAU - Lee, Sang-Won AU - Lee SW AUID- ORCID: 0000-0002-8038-3341 AD - Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea (the Republic of) sangwonlee@yuhs.ac. AD - Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, Korea (the Republic of). LA - eng PT - Journal Article PT - Observational Study PT - Research Support, Non-U.S. Gov't DEP - 20201112 PL - England TA - J Investig Med JT - Journal of investigative medicine : the official publication of the American Federation for Clinical Research JID - 9501229 RN - 0 (Biomarkers) RN - EC 3.4.21.- (GZMB protein, human) RN - EC 3.4.21.- (Granzymes) SB - IM MH - Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/*blood MH - Biomarkers/blood MH - Female MH - Granzymes/*blood MH - Humans MH - Inflammation/*blood MH - Kidney Diseases MH - Lung Diseases MH - Male MH - Middle Aged MH - Otorhinolaryngologic Diseases MH - Prospective Studies OTO - NOTNLM OT - autoimmune diseases OT - biomarkers OT - vascular diseases COIS- Competing interests: None declared. EDAT- 2020/11/14 06:00 MHDA- 2021/11/10 06:00 CRDT- 2020/11/13 05:44 PHST- 2020/10/27 00:00 [accepted] PHST- 2020/11/14 06:00 [pubmed] PHST- 2021/11/10 06:00 [medline] PHST- 2020/11/13 05:44 [entrez] AID - jim-2020-001365 [pii] AID - 10.1136/jim-2020-001365 [doi] PST - ppublish SO - J Investig Med. 2021 Jan;69(1):91-95. doi: 10.1136/jim-2020-001365. Epub 2020 Nov 12.