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Aqeel F, Geetha D. Kidney Failure in Pauci-immune Crescentic Glomerulonephritis: Rationale for Immunosuppression to Improve Kidney Outcome. Curr Rheumatol Rep 2024; 26:290-301. [PMID: 38709420 DOI: 10.1007/s11926-024-01150-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2024] [Indexed: 05/07/2024]
Abstract
PURPOSE OF REVIEW Pauci-immune crescentic glomerulonephritis is the hallmark finding in ANCA-associated vasculitis (AAV) when the kidneys are affected. The rationale for immunosuppression in AAV is based on the underlying autoimmune nature of the disease. Overall remission rates, kidney outcomes, and the burden of disease have greatly improved since the discovery of various immunosuppressive therapies, but relapses remain common, and a significant proportion of patients continue to progress to end-stage kidney disease. Here, we review the role of immunosuppressive therapies for the treatment of pauci-immune crescentic glomerulonephritis. RECENT FINDINGS Besides the recognized role of B and T cells in the pathogenies of AAV, the focus on the contribution of inflammatory cytokines, neutrophil extracellular traps (NETs), and the complement system allowed the discovery of new therapies. Specifically, the C5a receptor blocker (avacopan) has been approved as a glucocorticoid-sparing agent. Additionally, based on observational data, more clinicians are now using combination therapies during the induction phase. There is also an evolving understanding of the role of plasma exchange in removing ANCA antibodies. Furthermore, the recent development of risk score systems provides physicians with valuable prognostic information that can influence decisions on immunosuppression, although future validation from larger cohorts is needed. The over-activation of various immune pathways plays a significant role in the pathogenesis of pauci-immune crescentic glomerulonephritis in AAV. Immunosuppression is, therefore, an important strategy to halt disease progression and improve overall outcomes. Relapse prevention while minimizing adverse events of immunosuppression is a major long-term goal in AAV management.
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Affiliation(s)
- Faten Aqeel
- Department of Internal Medicine, Division of Nephrology, Johns Hopkins University School of Medicine, 301 Mason Lord Drive, Baltimore, MD, USA
| | - Duvuru Geetha
- Department of Internal Medicine, Division of Nephrology, Johns Hopkins University School of Medicine, 301 Mason Lord Drive, Baltimore, MD, USA.
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2
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Kong W, Wang J, Wang M, Ni A, Huang X, Chen L, Zhou Q, Wang H, Chen J, Han F. The correlation of interstitial change with renal prognosis in patients with myeloperoxidase-ANCA-associated glomerulonephritis: a single-center retrospective analysis. Clin Rheumatol 2024; 43:377-386. [PMID: 37646859 DOI: 10.1007/s10067-023-06753-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/10/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023]
Abstract
OBJECTS We aim to explore the correlation between active/chronic tubulointerstitial injury and renal survival, and to compare their predictive value in patients with myeloperoxidase (MPO)-anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis (AAGN). METHOD A total of 225 patients with MPO-AAGN diagnosed between February 2004 and December 2020 were included. Survival and univariate/multivariate Cox regression analyses were used to analyze the prognostic value of interstitial inflammation and interstitial fibrosis/tubular atrophy (IF/TA). RESULTS Of the 225 patients, 73 (32.4%) patients developed end-stage renal disease (ESRD) requiring maintenance dialysis. Interstitial inflammation>50% and IF/TA>50% were important predictors for ESRD in MPO-AAGN in multivariate Cox regression analysis adjusted by age, gender, estimated glomerular filtration rate (eGFR)≤15 ml/min/1.73m2, and normal glomeruli% (classified by <25%, 25-50%, >50%). Furthermore, we conducted stratified Cox regression analysis and found different results in the subgroups of eGFR>15 ml/min/1.73m2 and eGFR≤15 ml/min/1.73m2. Interstitial inflammation>50% and IF/TA>50% were significant risk factors for ESRD in the subgroup of eGFR>15 ml/min/1.73m2, but not or less significant in the subgroup of eGFR≤15 ml/min/1.73m2. Similarly, the survival analysis according to interstitial inflammation>50%/≤50% and IF/TA>50%/≤50% showed significant differences in the subgroup of eGFR>15 ml/min/1.73m2, but not or less significant in the subgroup of eGFR≤15 ml/min/1.73m2. CONCLUSIONS Interstitial inflammation>50% and IF/TA>50% were prognostic factors for renal survival in MPO-AAGN. In particular, interstitial inflammation and IF/TA had a better predictive ability in the subgroup of eGFR>15 ml/min/1.73m2. Key Points • Interstitial inflammation>50% and IF/TA>50% can help to predict renal survival in MPO-AAGN. • Both interstitial inflammation and IF/TA had a better predictive ability in the subgroup of eGFR>15 ml/min/1.73m2 than those in the subgroup of eGFR≤15 ml/min/1.73m2.
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Affiliation(s)
- Weiwei Kong
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Jiahui Wang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Meifang Wang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Anqi Ni
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Xiaohan Huang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Liangliang Chen
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Qin Zhou
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Huiping Wang
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Jianghua Chen
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China
| | - Fei Han
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine; Institute of Nephrology, Zhejiang University; Key Laboratory of Kidney Disease Prevention and Control Technology, Zhejiang Province; Zhejiang Clinical Research Center of Kidney and Urinary System Disease, 79 Qingchun Road, Zhejiang, 310003, Hangzhou, China.
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Hanberg JS, Cook C, Fu X, Choi HK, Zhang Y, Wallace ZS. Longitudinal Patterns of Renal Function in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis. Arthritis Care Res (Hoboken) 2023; 75:2190-2198. [PMID: 36856264 PMCID: PMC10885164 DOI: 10.1002/acr.25100] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 12/19/2022] [Accepted: 02/07/2023] [Indexed: 03/02/2023]
Abstract
OBJECTIVE A spectrum of chronic kidney disease (CKD) and end-stage renal disease (ESRD) may occur in antineutrophil cytoplasmic antibody-associated vasculitis (AAV). The longitudinal trajectory of renal function in AAV is poorly understood. METHODS Patients with ≥2 creatinine measurements, including at baseline (±30 days of treatment initiation), were included from the Mass General Brigham AAV Cohort. We calculated estimated glomerular filtration rate (eGFR). We incorporated longitudinal changes in eGFR into a group-based trajectory model to identify patients with similar patterns of change in renal function. The chi-square test and the Kruskal-Wallis test were used to evaluate differences between groups in categorical variables and non-normally distributed continuous variables, respectively. RESULTS In 255 AAV patients, we identified 4 renal trajectory groups: rapid decline (n = 20), impaired (n = 82), preserved (n = 129), and recovery (n = 24). The rapid decline and impaired groups had greater baseline comorbidity (P = 0.01) and lower prevasculitis eGFR (P = 0.02). Clinically significant CKD (eGFR <60 ml/minute/1.73 m2 ) persisted over 5 years in >75% of the impaired group, compared to <40% of patients in the preserved group (P < 0.001). ESRD occurred most frequently in the rapid decline (100%), followed by the impaired and preserved groups (7% each). Baseline AAV renal involvement was present prior to 95% of ESRD. However, ESRD etiology varied, with 90% of rapid-onset ESRD attributed to vasculitis, versus 17-44% in impaired or preserved groups (P = 0.001). CONCLUSION We identified 4 longitudinal patterns of renal function after AAV diagnosis. Our findings highlight the burden of CKD in AAV and provide a framework for future research into personalized care in this vulnerable population.
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Affiliation(s)
| | | | | | - Hyon K. Choi
- Massachusetts General Hospital and Harvard Medical School, Boston
| | - Yuqing Zhang
- Massachusetts General Hospital and Harvard Medical School, Boston
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Trivioli G, Marquez A, Martorana D, Tesi M, Kronbichler A, Lyons PA, Vaglio A. Genetics of ANCA-associated vasculitis: role in pathogenesis, classification and management. Nat Rev Rheumatol 2022; 18:559-574. [PMID: 36109667 DOI: 10.1038/s41584-022-00819-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2022] [Indexed: 12/15/2022]
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) comprises granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA) and eosinophilic granulomatosis with polyangiitis (EGPA), that share features of pauci-immune small-vessel vasculitis and the positivity of ANCA targeting proteinase-3 (PR3-ANCA) or myeloperoxidase (MPO-ANCA). AAV syndromes are rare, complex diseases and their aetio-pathogenesis is mainly driven by the interaction between environmental and genetic factors. In patients with GPA and MPA, the genetic associations are stronger with ANCA specificity (PR3- versus MPO-ANCA) than with the clinical diagnosis, which, in keeping with the known clinical and prognostic differences between PR3-ANCA-positive and MPO-ANCA-positive patients, supports an ANCA-based re-classification of these disorders. EGPA is also made up of genetically distinct subsets, which can be stratified on ANCA-status (MPO ANCA-positive versus ANCA-negative); these subsets differ in clinical phenotype and possibly in their response to treatment. Interestingly, MPO-ANCA-positive patients with either MPA or EGPA have overlapping genetic determinants, thus strengthening the concept that this EGPA subset is closely related to the other AAV syndromes. The genetics of AAV provides us with essential information to understand its varied phenotype. This Review discusses the main findings of genetic association studies in AAV, their pathogenic implications and their potential effect on classification, management and prognosis.
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Affiliation(s)
- Giorgio Trivioli
- Department of Biomedical Experimental and Clinical Sciences "Mario Serio", University of Florence, Florence, Italy
- Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence, Italy
| | - Ana Marquez
- Institute of Parasitology and Biomedicine "López-Neyra", CSIC, Granada, Spain
| | - Davide Martorana
- Medical Genetics Unit, Department of Diagnostics, University Hospital of Parma, Parma, Italy
- CoreLab Unit, Research Center, University Hospital of Parma, Parma, Italy
| | - Michelangelo Tesi
- Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence, Italy
| | - Andreas Kronbichler
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK
- Vasculitis and Lupus Service, Department of Renal Medicine, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Paul A Lyons
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Augusto Vaglio
- Department of Biomedical Experimental and Clinical Sciences "Mario Serio", University of Florence, Florence, Italy.
- Nephrology and Dialysis Unit, Meyer Children's Hospital, Florence, Italy.
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5
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Denic A, Bogojevic M, Mullan AF, Sabov M, Asghar MS, Sethi S, Smith ML, Fervenza FC, Glassock RJ, Hommos MS, Rule AD. Prognostic Implications of a Morphometric Evaluation for Chronic Changes on All Diagnostic Native Kidney Biopsies. J Am Soc Nephrol 2022; 33:1927-1941. [PMID: 35922132 PMCID: PMC9528338 DOI: 10.1681/asn.2022030234] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/19/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Semiquantitative visual inspection for glomerulosclerosis, interstitial fibrosis, and arteriosclerosis is often used to assess chronic changes in native kidney biopsies. Morphometric evaluation of these and other chronic changes may improve the prognostic assessment. METHODS We studied a historical cohort of patients who underwent a native kidney biopsy between 1993 and 2015 and were followed through 2021 for ESKD and for progressive CKD (defined as experiencing 50% eGFR decline, temporary dialysis, or ESKD). Pathologist scores for the percentages of globally sclerosed glomeruli (GSG), interstitial fibrosis and tubular atrophy (IFTA), and arteriosclerosis (luminal stenosis) were available. We scanned biopsy sections into high-resolution images to trace microstructures. Morphometry measures were percentage of GSG; percentage of glomerulosclerosis (percentage of GSG, ischemic-appearing glomeruli, or segmentally sclerosed glomeruli); percentage of IFTA; IFTA foci density; percentage of artery luminal stenosis; arteriolar hyalinosis counts; and measures of nephron size. Models assessed risk of ESKD or progressive CKD with biopsy measures adjusted for age, hypertension, diabetes, body mass index, eGFR, and proteinuria. RESULTS Of 353 patients (followed for a median 7.5 years), 75 developed ESKD and 139 experienced progressive CKD events. Visually estimated scores by pathologists versus morphometry measures for percentages of GSG, IFTA, and luminal stenosis did not substantively differ in predicting outcomes. However, adding percentage of glomerulosclerosis, IFTA foci density, and arteriolar hyalinosis improved outcome prediction. A 10-point score using percentage of glomerulosclerosis, percentage of IFTA, IFTA foci density, and any arteriolar hyalinosis outperformed a 10-point score based on percentages of GSG, IFTA, and luminal stenosis >50% in discriminating risk of ESKD or progressive CKD. CONCLUSION Morphometric characterization of glomerulosclerosis, IFTA, and arteriolar hyalinosis on kidney biopsy improves prediction of long-term kidney outcomes.
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Affiliation(s)
- Aleksandar Denic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Marija Bogojevic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Aidan F. Mullan
- Division of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, Minnesota
| | - Moldovan Sabov
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Muhammad S. Asghar
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Maxwell L. Smith
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Scottsdale, Arizona
| | | | - Richard J. Glassock
- Department of Medicine, Geffen School of Medicine, University of California, Los Angeles, California
| | - Musab S. Hommos
- Division of Nephrology and Hypertension, Mayo Clinic, Scottsdale, Arizona
| | - Andrew D. Rule
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
- Division of Epidemiology, Mayo Clinic, Rochester, Minnesota
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6
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Yang J, Yang Y, Xu Y, Zhou L, Zhou L, Yin X, Pu J, Yang F, Liu Y, He Y, Chen Y, Yuan H, Qiu L, Zhang Y, Chen Y, Liu T, Tang J, Zhou J. Clinical and Renal Histology Findings and Different Responses to Induction Treatment Affecting the Long-Term Renal Outcomes of Children With ANCA-Associated Vasculitis: a Single-Center Cohort Analysis. Front Immunol 2022; 13:857813. [PMID: 35493514 PMCID: PMC9047757 DOI: 10.3389/fimmu.2022.857813] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/11/2022] [Indexed: 12/13/2022] Open
Abstract
Introduction Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is relatively rare in children. This article aimed to analyze clinical and renal histology findings and different responses to induction treatment associated with the long-term renal outcomes in children with AAV in a single center. Methods All pediatric patients with AAV admitted to Tongji Hospital from January 2002 to January 2021 were included in the study. The demographic, clinical, pathological, laboratory, and treatment data and outcomes were collected and analyzed to identify predictors associated with response to induction treatment and progression to end-stage renal disease (ESRD). Results In total, 48 children with AAV were included in this cohort; 81.25% of them were women, and 91.7% were microscopic polyangiitis (MPA). Kidney involvement was found in 45 patients (93.75%). The most common histopathological subtype was crescentic form in this cohort according to Berden's classification. In total, 34 patients (70.8%) showed eGFR <60 ml/min/1.73 m2 at the time of diagnosis. Complete and partial remission was achieved in 8 patients (16.7%) and 19 patients (39.6%), respectively, following 6-month induction treatment. Half of the patients eventually progressed to ESRD at a mean time of (13.04 ± 15.83) months after diagnosis. The independent predictors of nonremission following induction treatment and progression to ESRD were baseline eGFR <60 ml/min/1.73 m2 and hypertension at diagnosis. Renal survival significantly decreased over time in patients with renal sclerotic subtypes or those with nonremission following induction treatment by Kaplan-Meier curve estimation. Conclusions Our study demonstrates that women, MPA, and crescentic subtypes are predominant in pediatric AAV in China. Initial renal failure (eGFR <60 ml/min/1.73 m2), hypertension, sclerotic pathological subtype, and nonremission following induction treatment are predictive of long-term renal outcomes.
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Affiliation(s)
- Jing Yang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuan Yang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yongli Xu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lanqi Zhou
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Luowen Zhou
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoling Yin
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinyun Pu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fengjie Yang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaping Liu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yonghua He
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yaxian Chen
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huiqing Yuan
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liru Qiu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Zhang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Chen
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tonglin Liu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinhui Tang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jianhua Zhou
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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7
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Brilland B, Boud'hors C, Copin MC, Jourdain P, Henry N, Wacrenier S, Djema A, Samoreau C, Coindre JP, Cousin M, Riou J, Croue A, Saint-André JP, Subra JF, Piccoli GB, Augusto JF. Assessment of Renal Risk Score and Histopathological Classification for Prediction of End-Stage Kidney Disease and Factors Associated With Change in eGFR After ANCA-Glomerulonephritis Diagnosis. Front Immunol 2022; 13:834878. [PMID: 35392077 PMCID: PMC8981524 DOI: 10.3389/fimmu.2022.834878] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/21/2022] [Indexed: 12/12/2022] Open
Abstract
Introduction The “Renal Risk Score” (RRS) and the histopathological classification have been proposed to predict the risk of end-stage kidney disease (ESKD) in ANCA-associated glomerulonephritis (ANCA-GN). Besides, factors associated with kidney function recovery after ANCA-GN onset remain to be more extensively studied. In the present study, we analyzed the value of the RRS and of the histopathological classification for ESKD prediction. Next, we analyzed factors associated with eGFR change within the first 2 years following ANCA-GN diagnosis. Materials and Methods We included patients from the Maine–Anjou ANCA-associated vasculitis registry with at least 6 months of follow-up. The values of ANCA-GN, histopathological classification, and RRS, and the factors associated with eGFR variations between ANCA-GN diagnosis and 2 years of follow-up were assessed. Results The predictive values of the histopathological classification and RRS were analyzed in 123 patients. After a median follow-up of 42 months, 33.3% patients developed ESKD. The predictive value of RRS for ESKD was greater than that of the histopathological classification. Determinants of eGFR variation were assessed in 80/123 patients with complete eGFR measurement. The median eGFR increased from ANCA-GN diagnosis to month 6 and stabilized thereafter. The only factor associated with eGFR variation in our study was eGFR at ANCA-GN diagnosis, with higher eGFR at diagnosis being associated with eGFR loss (p<0.001). Conclusion The RRS has a better predictive value for ESKD than the histopathological classification. The main determinant of eGFR variation at 2 years was eGFR at ANCA-GN diagnosis. Thus, this study suggests that eGFR recovery is poorly predicted by histological damage at ANCA-GN diagnosis.
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Affiliation(s)
- Benoit Brilland
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France.,Université d'Angers, Université de Nantes, Centre Hospitalier Universitaire (CHU) d'Angers, Institut National de la Santé Et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie et Immunologie Nantes-Angers (CRCI2NA), Structure Fédérative de Recherche Interactions Cellulaires et Applications Thérapeutiques (SFR ICAT), Angers, France
| | - Charlotte Boud'hors
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France.,Université d'Angers, Université de Nantes, Centre Hospitalier Universitaire (CHU) d'Angers, Institut National de la Santé Et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie et Immunologie Nantes-Angers (CRCI2NA), Structure Fédérative de Recherche Interactions Cellulaires et Applications Thérapeutiques (SFR ICAT), Angers, France
| | - Marie-Christine Copin
- Université d'Angers, Université de Nantes, Centre Hospitalier Universitaire (CHU) d'Angers, Institut National de la Santé Et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie et Immunologie Nantes-Angers (CRCI2NA), Structure Fédérative de Recherche Interactions Cellulaires et Applications Thérapeutiques (SFR ICAT), Angers, France.,Service de Pathologie, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France
| | - Pierre Jourdain
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France
| | - Nicolas Henry
- Service de Néphrologie-Dialyse, CH de Laval, Laval, France
| | - Samuel Wacrenier
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France.,Service de Néphrologie-Dialyse, CH du Mans, Le Mans, France
| | - Assia Djema
- Service de Néphrologie-Dialyse, CH de Cholet, Cholet, France
| | - Clément Samoreau
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France
| | | | - Maud Cousin
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France
| | - Jeremie Riou
- Micro et Nanomedecines Translationnelles, MINT, Université d'Angers, Unité Mixte de Recherche (UMR) Institut National de la Santé Et de la Recherche Médicale (INSERM) 6021, Unité Mixte de Recherche (UMR) Centre National de la Recherche Scientifique (CNRS) 6021, Angers, France.,Methodology and Biostatistics Department, Delegation to Clinical Research and Innovation, Angers University Hospital, Angers, France
| | - Anne Croue
- Service de Pathologie, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France
| | - Jean-Paul Saint-André
- Service de Pathologie, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France
| | - Jean-François Subra
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France.,Université d'Angers, Université de Nantes, Centre Hospitalier Universitaire (CHU) d'Angers, Institut National de la Santé Et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie et Immunologie Nantes-Angers (CRCI2NA), Structure Fédérative de Recherche Interactions Cellulaires et Applications Thérapeutiques (SFR ICAT), Angers, France
| | | | - Jean-François Augusto
- Service de Néphrologie-Dialyse-Transplantation, Université d'Angers, Centre Hospitalier Universitaire (CHU) Angers, Angers, France.,Université d'Angers, Université de Nantes, Centre Hospitalier Universitaire (CHU) d'Angers, Institut National de la Santé Et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie et Immunologie Nantes-Angers (CRCI2NA), Structure Fédérative de Recherche Interactions Cellulaires et Applications Thérapeutiques (SFR ICAT), Angers, France
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8
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Morita K, Yamamoto S, Ueda M, Taniguchi K, Nakai H, Minamiguchi S, Muso E, Yanagita M. A rare case of atypical ANCA-associated vasculitis without crescents overlapping with invasive pulmonary aspergillosis, successfully treated to remission with intravenous immunoglobulin therapy. CEN Case Rep 2022; 11:428-435. [PMID: 35267179 DOI: 10.1007/s13730-022-00696-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 02/23/2022] [Indexed: 11/27/2022] Open
Abstract
Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is life-threatening without treatment, but aggressive immunosuppression increases the risk of exacerbating a coexisting infection. Finding the balance between efficacy and safety of immunosuppression is challenging. We describe a 74-year-old man who was diagnosed with AAV following the aggravation of chronic pulmonary aspergillosis that required an aggressive antifungal agent. The laboratory data on admission demonstrated severe kidney failure requiring hemodialysis. Due to the active infection, we chose intravenous immunoglobulin (IVIg) as a low-risk initial treatment, which remarkably improved renal dysfunction (serum creatinine; 16.7 mg/dL-3.7 mg/dL) and systemic inflammation. Renal biopsy that was performed after renal recovery revealed atypical ANCA-associated nephritis without cellular crescents but with massive arteritis with multiple vascular sizes and diffuse interstitial inflammation. Despite these active AAV findings, adding plasma exchange therapy (PE) and low-dose steroids were sufficient to induce remission. The main pathogenesis of severe renal impairment was probably the reduction of blood flow, resulting from occlusions of small arteries by inflammatory cell infiltration and vascular endothelial injury due to AAV. Combination treatment with antifungal agents, IVIg, PE, and low-dose steroid treatment led to complete resolution of vasculitis. The specific histological findings and the good response to treatments suggest that pulmonary aspergillosis might trigger vasculitis through induction of ANCA antigen expression. IVIg could be an important option especially for cases of AAV associated with pulmonary aspergillosis.
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Affiliation(s)
- Keisuke Morita
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Shogoin-Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Shinya Yamamoto
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Shogoin-Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan.
| | - Marina Ueda
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Shogoin-Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Keisuke Taniguchi
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Shogoin-Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Hirotsugu Nakai
- Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Sachiko Minamiguchi
- Department of Diagnostic Pathology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Eri Muso
- Division of Nephrology and Dialysis, Kitano Hospital, Osaka, Japan
- Department of Food and Nutrition, Faculty of Contemporary Home Economics, Kyoto Kacho University, Kyoto, Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto University, Shogoin-Kawahara-cho 54, Sakyo-ku, Kyoto, 606-8507, Japan
- Institute for the Advanced Study of Human Biology (ASHBi), Kyoto University, Kyoto, Japan
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9
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Xia M, Yu R, Zheng Z, Li H, Feng J, Xie X, Chen D. Meta-Analytical Accuracy of ANCA Renal Risk Score for Prediction of Renal Outcome in Patients With ANCA-Associated Glomerulonephritis. Front Med (Lausanne) 2022; 8:736754. [PMID: 35071256 PMCID: PMC8770957 DOI: 10.3389/fmed.2021.736754] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 11/30/2021] [Indexed: 12/15/2022] Open
Abstract
Background: To evaluate the diagnostic accuracy of antineutrophil cytoplasmic antibody (ANCA) renal risk score (ARRS) for prediction of renal outcome in patients with ANCA-associated glomerulonephritis (ANCA-GN). Methods: We searched PubMed, EMBASE, Ovid, Web of Science, the Cochrane Library, and ClinicalTrials.gov for studies, which used ARRS to predict end-stage renal disease (ESRD) in patients with ANCA-GN. Two reviewers independently screened articles for inclusion, assessed the quality of studies with both an adapted Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS-2) tool. We calculated the combined patients with ESRD in the ARRS categories and presented the summary and individual estimates based on the ARRS categories. Then, the sensitivity, specificity, diagnostic odds ratio (DOR), positive/negative likelihood ratio, and the area under the receiver operating characteristic (AUROC) curves of the pooled data for ARRS were used to assess the accuracy of the “above the low-risk threshold” (ARRS ≥ 2) and “high-risk grade” (ARRS ≥ 8) for renal outcome of patients with ANCA-GN. The hierarchical summary ROC (HSROC) was used to verify the accuracy value. The clinical utility of ARRS was evaluated by the Fagan plot. Heterogeneity was explored using meta-regression and subgroup analysis. Results: A total of 12 distinct cohorts from 11 articles involving 1,568 patients with ANCA-GN were analyzed. The cumulative patients with ESRD at the maximum follow-up of 60 months was 5% (95% CI: 0.02–0.07; p < 0.001) for ANCA-GN with low ARRS (0–1 points) and significantly increased to 22% (95% CI: 0.15–0.29; p < 0.001) medium ARRS (2–7 points). The combined cumulative patients with ESRD was 59% (95% CI: 0.49–0.69; p < 0.001) high ARRS (8–11 points). The pooled sensitivity of ARRS ≥ 2 in predicting ESRD was 98% with a specificity of 30% and a DOR of 15.08 and the mean AUROC value was 0.82. The pooled sensitivity of ARRS ≥ 8 in predicting ESRD was 58% with a specificity of 86% and a DOR of 7.59. The meta-regression and subgroup analysis indicated that variation in the geographic regions, study design, index risk, follow-up time, age of patient, publication year, and number of patient could be the potential sources of heterogeneity in the diagnosis of ARRS ≥ 8. Conclusion: This meta-analysis emphasized the good performance of the ARRS score in predicting the renal outcome in patients with ANCA-GN. However, these findings should be verified by future large-scale prospective studies.
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Affiliation(s)
- Mengdi Xia
- Nanchong Key Laboratory of Basic Science and Clinical Research on Chronic Kidney Disease, Department of Nephrology, The Second Clinical Medical Institution of North Sichuan Medical College (Nanchong Central Hospital), Nanchong, China
| | - Ruiran Yu
- Department of Oncology, Anqing First People's Hospital of Anhui Medical University, Anqing, China
| | - Zaiqiong Zheng
- Nanchong Key Laboratory of Basic Science and Clinical Research on Chronic Kidney Disease, Department of Nephrology, The Second Clinical Medical Institution of North Sichuan Medical College (Nanchong Central Hospital), Nanchong, China
| | - Huan Li
- Nanchong Key Laboratory of Basic Science and Clinical Research on Chronic Kidney Disease, Department of Nephrology, The Second Clinical Medical Institution of North Sichuan Medical College (Nanchong Central Hospital), Nanchong, China
| | - Jie Feng
- Nanchong Key Laboratory of Basic Science and Clinical Research on Chronic Kidney Disease, Department of Nephrology, The Second Clinical Medical Institution of North Sichuan Medical College (Nanchong Central Hospital), Nanchong, China
| | - Xisheng Xie
- Nanchong Key Laboratory of Basic Science and Clinical Research on Chronic Kidney Disease, Department of Nephrology, The Second Clinical Medical Institution of North Sichuan Medical College (Nanchong Central Hospital), Nanchong, China
| | - Dongming Chen
- Department of Neurosurgery, The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, China
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10
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Calatroni M, Consonni F, Allinovi M, Bettiol A, Jawa N, Fiasella S, Curi D, Abu Rumeileh S, Tomei L, Fortunato L, Gelain E, Gianfreda D, Oliva E, Jeannin G, Salviani C, Emmi G, Bodria M, Sinico RA, Moroni G, Ramirez GA, Bozzolo E, Tombetti E, Monti S, Bracaglia C, Marucci G, Pastore S, Esposito P, Catanoso MG, Crapella B, Montini G, Roperto R, Materassi M, Rossi GM, Badalamenti S, Yeung RS, Romagnani P, Ghiggeri GM, Noone D, Vaglio A. Prognostic Factors and Long-Term Outcome with ANCA-Associated Kidney Vasculitis in Childhood. Clin J Am Soc Nephrol 2021; 16:1043-1051. [PMID: 34039568 PMCID: PMC8425616 DOI: 10.2215/cjn.19181220] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/21/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND OBJECTIVES ANCA-associated vasculitis is extremely rare in children. We report the clinicopathologic features, long-term outcomes, and prognostic factors of a large pediatric cohort of patients with ANCA-associated kidney vasculitis. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS This retrospective study included 85 consecutive patients with kidney biopsy specimen-proven ANCA-associated vasculitis from tertiary referral centers in Italy and Canada. Kidney biopsy specimens were categorized as focal, crescentic, sclerotic, or mixed, according to the Berden classification. The prognostic significance of baseline clinical, laboratory, and histologic findings was analyzed with respect to kidney failure or CKD stage 3-5/kidney failure. RESULTS A total of 53 patients had microscopic polyangiitis (62%), and 32 had granulomatosis with polyangiitis (38%). Rapidly progressive GN was the most frequent presentation (39%); a third of the patients also had nephrotic-range proteinuria. Kidney biopsy specimens were classified as focal in 21% of the patients, crescentic in 51%, sclerotic in 15%, and mixed in 13%. Remission-induction therapies included cyclophosphamide in 78% of patients. A total of 25 patients (29%) reached kidney failure. The median (interquartile range) time to kidney failure or last follow-up was 35 (6-89) months in the whole cohort, and 73 (24-109) months among the patients who did not reach this outcome. Patients whose biopsy specimens showed sclerotic histology had significantly shorter kidney survival (hazard ratio, 11.80; 95% confidence interval, 2.49 to 55.99) and survival free of CKD stage 3-5 (hazard ratio, 8.88; 95% confidence interval, 2.43 to 32.48), as compared with those with focal/mixed histology. Baseline eGFR, low serum albumin, hypertension, central nervous system complications, and sclerotic histology, which reflected severe kidney involvement, were associated with both kidney failure and CKD stage 3-5/kidney failure at unadjusted analysis; no independent prognostic factors emerged at multivariable analysis. CONCLUSIONS Children with ANCA-associated kidney vasculitis often have aggressive presentation; a third of such children progress to kidney failure and this usually occurs early during follow-up. A severe clinical presentation is associated with the development of CKD or kidney failure.
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Affiliation(s)
- Marta Calatroni
- Nephrology Unit, Humanitas Clinical and Research Center, Rozzano, Italy
| | - Filippo Consonni
- Department of Health Sciences, University of Florence, Florence, Italy
| | | | - Alessandra Bettiol
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Natasha Jawa
- Division of Nephrology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Susanna Fiasella
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | - Dritan Curi
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | | | - Leonardo Tomei
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Laura Fortunato
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | - Elena Gelain
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
| | | | - Elena Oliva
- Nephrology Unit, Riuniti Hospital Marche, Ancona, Italy
| | - Guido Jeannin
- Nephrology Unit, Spedali Civili Hospital, Brescia, Italy
| | | | - Giacomo Emmi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Monica Bodria
- Laboratory of Molecular Nephrology and Division of Nephrology and Transplantation, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Giannina Gaslini Institute, Genoa, Italy
| | - Renato A. Sinico
- Laboratory of Molecular Nephrology and Division of Nephrology and Transplantation, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Giannina Gaslini Institute, Genoa, Italy
| | | | - Giuseppe A. Ramirez
- Nephrology Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Enrica Bozzolo
- Nephrology Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Enrico Tombetti
- Nephrology Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Sara Monti
- Unit of Immunology, Allergy, Rheumatology and Rare Disease, San Raffaele Hospital, Milan, Italy
| | - Claudia Bracaglia
- Department of Rheumatology, IRCCS Policlinico S. Matteo Foundation, University of Pavia, Pavia, Italy
| | - Giulia Marucci
- Department of Rheumatology, IRCCS Policlinico S. Matteo Foundation, University of Pavia, Pavia, Italy
| | - Serena Pastore
- Division of Rheumatology, IRCCS Bambino Gesù Children’s Hospital, Rome, Italy
| | - Pasquale Esposito
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo Hospital, Trieste, Italy
| | - Maria G. Catanoso
- Unit of Nephrology, Dialysis and Transplantation, Department of Internal Medicine, University of Genoa and Ospedale Policlinico San Martino–IRCCS, Genoa, Italy
| | - Barbara Crapella
- Rheumatology Unit, IRCCS Reggio Emilia Hospital, Reggio Emilia, Italy
| | - Giovanni Montini
- Rheumatology Unit, IRCCS Reggio Emilia Hospital, Reggio Emilia, Italy
| | - Rosa Roperto
- Pediatric Nephrology, Dialysis and Transplant Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Marco Materassi
- Pediatric Nephrology, Dialysis and Transplant Unit, IRCCS Ca 'Granda Foundation Maggiore Policlinico Hospital, Milan, Italy
| | - Giovanni M. Rossi
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio,” University of Florence, Florence, Italy
| | | | - Rae S.M. Yeung
- Nephrology Unit, Parma University Hospital, Parma, Italy
| | - Paola Romagnani
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio,” University of Florence, Florence, Italy
| | - Gian M. Ghiggeri
- Laboratory of Molecular Nephrology and Division of Nephrology and Transplantation, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Giannina Gaslini Institute, Genoa, Italy
| | - Damien Noone
- Division of Nephrology, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - Augusto Vaglio
- Nephrology and Dialysis Unit, Meyer Children’s Hospital, Florence, Italy
- Pediatric Translational Research Chair, University of Toronto, Toronto, Ontario, Canada
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11
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Windpessl M, Bettac EL, Gauckler P, Shin JI, Geetha D, Kronbichler A. ANCA Status or Clinical Phenotype - What Counts More? Curr Rheumatol Rep 2021; 23:37. [PMID: 33909191 PMCID: PMC8081707 DOI: 10.1007/s11926-021-01002-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2021] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW There is ongoing debate concerning the classification of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis. That is, whether classification should be based on the serotype (proteinase 3 (PR3)- or myeloperoxidase (MPO)-ANCA) or on the clinical phenotype (granulomatosis with polyangiitis (GPA) or microscopic polyangiitis (MPA)). To add clarity, this review focused on integration of the most recent literature. RECENT FINDINGS Large clinical trials have provided evidence that a serology-based risk assessment for relapses is more predictive than distinction based on the phenotype. Research conducted in the past decade indicated that a serology-based approach more closely resembles the genetic associations, the clinical presentation (i.e., lung involvement), biomarker biology, treatment response, and is also predicting comorbidities (such as cardiovascular death). Our review highlights that a serology-based approach could replace a phenotype-based approach to classify ANCA-associated vasculitides. In future, clinical trials and observational studies will presumably focus on this distinction and, as such, translate into a "personalized medicine."
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Affiliation(s)
- Martin Windpessl
- Department of Internal Medicine IV, Section of Nephrology, Klinikum Wels-Grieskirchen, Grieskirchnerstrasse 42, 4600, Wels, Austria
- Medical Faculty, Johannes Kepler University Linz, Altenberger Strasse 69, 4040, Linz, Austria
| | - Erica L Bettac
- Department of Psychology, Washington State University Vancouver, 14204 NE Salmon Creek Avenue, Vancouver, WA, USA
| | - Philipp Gauckler
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | - Jae Il Shin
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Duvuru Geetha
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Andreas Kronbichler
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.
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12
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Ge Y, Yang G, Yu X, Sun B, Zhang B, Yuan Y, Zeng M, Wang N, Mao H, Xing C. Outcome Predictors of Biopsy-Proven Myeloperoxidase-Anti-Neutrophil Cytoplasmic Antibody-Associated Glomerulonephritis. Front Immunol 2021; 11:607261. [PMID: 33613528 PMCID: PMC7889806 DOI: 10.3389/fimmu.2020.607261] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/15/2020] [Indexed: 12/25/2022] Open
Abstract
Objective To determine the prognostic values of histopathologic classification of myeloperoxidase-anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis and other clinical and laboratory features at the time of presentation on renal and patient survival associated with myeloperoxidase-ANCA-associated glomerulonephritis (MPO-ANCA-GN). Methods A total of 112 patients diagnosed with MPO-ANCA-GN from October 2005 to December 2018 were enrolled. The baseline clinical characteristics, renal histopathological data, and risk factors predictive of renal and patient survival were retrospectively analyzed. Results All 112 patients underwent renal biopsy. Disease in 32 patients was classified as focal, 26 as mixed, 29 as crescentic, and 25 as sclerotic. Over a median follow-up period of 41.5 months, there were 44 patients dialysis-dependent. The renal survival rate was significantly higher in the focal group than the other groups (p < 0.001) and significantly lower in the sclerotic group (p < 0.05). In addition, disease histopathologically classified as sclerotic (p = 0.044), high serum creatinine level (≥320 μmol/L, p < 0.001), low albumin (<30 g/L, p = 0.024) and hemoglobin level (<90 g/L, p = 0.044) were associated with a greater risk of ESRD. After follow-up, 70 (62.5%) of 112 patients survived. Old age (≥60 years, p = 0.018) and low serum albumin (<30 g/L, p = 0.006) was significant risk factor for patient survival. Conclusion Among patients with MPO-ANCA-GN, those with poor renal function, disease histopathologically classified as sclerotic, and lower albumin and hemoglobin levels were risk factors for ESRD, while older age and low serum albumin level were associated with a greater risk for all-cause mortality.
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Affiliation(s)
- Yifei Ge
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Guang Yang
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiangbao Yu
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bin Sun
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bo Zhang
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yanggang Yuan
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ming Zeng
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ningning Wang
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huijuan Mao
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Changying Xing
- Department of Nephrology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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13
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Trivioli G, Gopaluni S, Urban ML, Gianfreda D, Cassia MA, Vercelloni PG, Calatroni M, Bettiol A, Esposito P, Murtas C, Alberici F, Maritati F, Manenti L, Palmisano A, Emmi G, Romagnani P, Moroni G, Gregorini G, Sinico RA, Jayne DR, Vaglio A. Slowly progressive anti-neutrophil cytoplasmic antibody-associated renal vasculitis: clinico-pathological characterization and outcome. Clin Kidney J 2021; 14:332-340. [PMID: 33564436 PMCID: PMC7857823 DOI: 10.1093/ckj/sfaa139] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 05/25/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Although rapidly progressive glomerulonephritis is the main renal phenotype of anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), slow renal disease progression is sometimes observed. These forms have been rarely discussed; we analysed their prevalence, clinico-pathological characteristics and outcome. METHODS We screened patients with microscopic polyangiitis (MPA) and granulomatosis with polyangiitis followed at seven referral centres and selected those with estimated glomerular filtration rate (eGFR) reduction <50% over a 6-month period preceding diagnosis. Data regarding patient features and response to treatment were retrieved. RESULTS Of 856 patients, 41 (5%) had slowly progressive renal AAV. All had MPA and all but one was P-ANCA/myeloperoxidase (MPO) ANCA-positive. At diagnosis, the median age was 70 years [interquartile range (IQR) 64-78] and extra-renal manifestations were absent or subclinical (interstitial lung lesions in 10, 24%). The median (IQR) eGFR was 23 mL/min/1.73 m2 (15-35); six patients (15%) had started renal replacement therapy (RRT). All had proteinuria (median 1180 mg/24 h, IQR 670-2600) and micro-haematuria. Main histologic findings were extracapillary proliferation at chronic stages and glomerulosclerosis; following Berden's classification, 6/28 biopsies (21%) were 'focal', 1/28 (4%) 'crescentic', 9/28 (32%) 'mixed' and 12/28 (43%) 'sclerotic'. At last follow-up (median 32 months, IQR 12-52), 20/34 patients (59%) treated with immunosuppression had eGFR improvement >25% as compared with diagnosis, while 4/34 (12%) had started RRT. CONCLUSIONS AAV may present with slow renal disease progression; this subset is hallmarked by advanced age at diagnosis, positive MPO-ANCA, subclinical interstitial lung lesions and chronic damage at kidney biopsy. Partial renal recovery may occur following immunosuppression.
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Affiliation(s)
- Giorgio Trivioli
- Department of Biomedical Experimental and Clinical Sciences “Mario Serio”, University of Firenze, and Nephrology Unit, Meyer Children’s Hospital, Firenze, Italy
| | | | - Maria L. Urban
- Department of Experimental and Clinical Sciences, University of Firenze, Firenze, Italy
| | | | | | | | | | - Alessandra Bettiol
- Department of Neurosciences, Psychology, Pharmacology and Child Health, University of Firenze, Firenze, Italy
| | - Pasquale Esposito
- Department of Internal Medicine and Medical Specialties, University of Genova, Genova, Italy
| | - Corrado Murtas
- Nephrology Unit, Nephrology Unit, ASSL Oristano, ATS Sardegna, Oristano, Italy
| | - Federico Alberici
- Nephrology Unit, ASST Spedali Civili, Brescia, Italy
- Department of Medical and Surgical Specialities, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Federica Maritati
- Nephrology, Dialysis and Transplant Unit, Ospedali Riuniti, Ancona, Italy
| | - Lucio Manenti
- Nephrology Unit, Parma University Hospital, Parma, Italy
| | | | - Giacomo Emmi
- Department of Experimental and Clinical Sciences, University of Firenze, Firenze, Italy
| | - Paola Romagnani
- Department of Biomedical Experimental and Clinical Sciences “Mario Serio”, University of Firenze, and Nephrology Unit, Meyer Children’s Hospital, Firenze, Italy
| | | | | | | | | | - Augusto Vaglio
- Department of Biomedical Experimental and Clinical Sciences “Mario Serio”, University of Firenze, and Nephrology Unit, Meyer Children’s Hospital, Firenze, Italy
- Correspondence to: Augusto Vaglio; E-mail:
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