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Park K, Kwon SH. Monoclonal gammopathy of renal significance from the perspective of nephrologists. Blood Res 2024; 59:28. [PMID: 39133392 PMCID: PMC11319560 DOI: 10.1007/s44313-024-00027-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Accepted: 07/04/2024] [Indexed: 08/13/2024] Open
Abstract
Kidney disease is a frequent complication of multiple myeloma and other malignancies associated with monoclonal gammopathies. Additionally, dysproteinemia-related kidney disease can occur independently of overt multiple myeloma or hematologic malignancies. Monoclonal gammopathy of renal significance (MGRS) is a spectrum of disorders in which a monoclonal immunoglobulin produced by a benign or premalignant B-cell or plasma cell clone causes kidney damage. MGRS-associated renal disease manifests in various forms, including immunoglobulin-associated amyloidosis, monoclonal immunoglobulin deposition diseases (light chain, heavy chain, and combined light and heavy chain deposition diseases), proliferative glomerulonephritis with monoclonal immunoglobulin deposits, C3 glomerulopathy with monoclonal gammopathy, and light chain proximal tubulopathy. Although MGRS is a nonmalignant or premalignant hematologic condition, it has significant renal implications that often lead to progressive kidney damage and, eventually, end-stage kidney disease. This review discusses the epidemiology, pathogenesis, and management of MGRS and focuses on the perspective of nephrologists.
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Affiliation(s)
- Kootae Park
- Division of Nephrology, Hyonam Kidney Laboratory, Soonchunhyang University Hospital, 59 Daesagwan-Ro, Yongsan-Gu, Seoul, South Korea
| | - Soon Hyo Kwon
- Division of Nephrology, Hyonam Kidney Laboratory, Soonchunhyang University Hospital, 59 Daesagwan-Ro, Yongsan-Gu, Seoul, South Korea.
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Nasr SH, Sirac C, Leung N, Bridoux F. Monoclonal immunoglobulin crystalline nephropathies. Kidney Int 2024; 106:201-213. [PMID: 38723749 DOI: 10.1016/j.kint.2024.02.027] [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: 12/17/2023] [Revised: 02/18/2024] [Accepted: 02/27/2024] [Indexed: 05/22/2024]
Abstract
Monoclonal Ig crystalline nephropathies are rare lesions resulting from precipitation of monoclonal Igs in the kidney as crystalline inclusions. They can be categorized into lesions with predominant intracellular crystals (light chain [LC] proximal tubulopathy, LC crystal-storing histiocytosis, and LC crystalline podocytopathy) and lesions with predominant extracellular crystals (crystalglobulin-induced nephropathy and crystalline variant of LC cast nephropathy). The majority of these lesions are associated with low tumor burden lymphoproliferative disorders, with the exception of crystalline variant of LC cast nephropathy. Extrarenal involvement (e.g., skin and cornea) is frequent. Kidney biopsy is the cornerstone for diagnosis, which often requires electron microscopy and antigen retrieval. A thorough hematologic workup and evaluation of extrarenal involvement is mandatory for management. Treatment of these lesions is with clone-directed therapy, with the goal of achieving hematologic very good partial response or complete response, which preserves or improves kidney function. In vitro and in vivo studies, animal models, and novel sequencing techniques have been invaluable tools to understand the pathogenesis of LC proximal tubulopathy and can be used to increase our limited knowledge of the pathogenesis of the other monoclonal Ig crystalline nephropathies. This review provides an update on the pathology, renal and hematologic characteristics, extrarenal manifestations, prognosis, treatment, and pathogenesis of monoclonal Ig crystalline nephropathies.
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Affiliation(s)
- Samih H Nasr
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.
| | - Christophe Sirac
- Control of the Immune Response B and Lymphoproliferation, Joint Research Unit CNRS 7276, INSERM 1262, University of Limoges, Limoges, France; Centre de Référence de l'Amylose AL et des autres Maladies par Dépôts d'Imunoglobuline Monoclonale, University Hospital Dupuytren, Limoges, France
| | - Nelson Leung
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA; Division of Hematology, Mayo Clinic, Rochester, Minnesota, USA
| | - Frank Bridoux
- Control of the Immune Response B and Lymphoproliferation, Joint Research Unit CNRS 7276, INSERM 1262, University of Limoges, Limoges, France; Centre de Référence de l'Amylose AL et des autres Maladies par Dépôts d'Imunoglobuline Monoclonale, University Hospital Dupuytren, Limoges, France; Department of Nephrology, Centre Hospitalier Universitaire, Université de Poitiers, Poitiers, France
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Miao J, Herrmann SM, Obaidi Z, Caza T, Bonilla M. Paraprotein-Mediated Glomerular Diseases. ADVANCES IN KIDNEY DISEASE AND HEALTH 2024; 31:358-373. [PMID: 39084761 DOI: 10.1053/j.akdh.2024.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 08/02/2024]
Abstract
Paraproteinemias are a group of complex diseases associated with an overproduction of a monoclonal immunoglobulin that can cause a diversity of kidney disorders and end-organ damage. In this review, we focus on paraprotein-mediated glomerular diseases. Kidney biopsy plays a crucial role in diagnosing these disorders, enabling the identification of specific histological patterns. These lesions are categorized into organized (such as amyloidosis, immunotactoid glomerulopathy, fibrillary glomerulonephritis, cryoglobulinemic glomerulonephritis, and monoclonal crystalline glomerulopathies) and nonorganized deposits (such as monoclonal Ig deposition disease and proliferative glomerulonephritis with monoclonal Ig deposits) based on the characteristics of immunofluorescence findings and the ultrastructural appearance of deposits on electron microscopy. This review aims to provide an update, highlight, and discuss clinicopathological aspects such as definition, epidemiology, clinical manifestations, mechanisms of kidney injury, histological features, and diagnostic procedures.
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Affiliation(s)
- Jing Miao
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | | | - Zainab Obaidi
- Department of Medicine, Section of Nephrology, University of Chicago, Chicago, IL
| | | | - Marco Bonilla
- Department of Medicine, Section of Nephrology, University of Chicago, Chicago, IL.
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Try M, Harel S. [Renal failure in multiple myeloma: Specific management issues]. Bull Cancer 2024; 111:733-740. [PMID: 36759215 DOI: 10.1016/j.bulcan.2022.12.015] [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: 07/13/2022] [Revised: 12/11/2022] [Accepted: 12/21/2022] [Indexed: 02/10/2023]
Abstract
Renal impairment is common during multiple myeloma and persistent reduction in kidney function strongly affects prognosis. Cast nephropathy, by monoclonal free light chains precipitation with uromodulin in renal tubules, is the main cause of acute kidney injury in multiple myeloma. Kidney biopsy, although not necessary for diagnosis, allows assessment of renal prognosis according to the extent of cast formation, tubular atrophy and interstitial fibrosis. Prevention and early diagnosis of acute kidney injury are essential to optimize management and avoid progression to chronic kidney disease. Rehydration, interruption of nephrotoxic treatments, correction of precipitating factors, anti-plasma cell chemotherapy can rapidly reduce the free light chains nephrotoxicity. The association of the proteasome inhibitor Bortezomib and high dose Dexamethasone is the reference treatment in newly diagnosed patients with renal impairment. Adding Cyclophosphamide or the immunomodulator Lenalidomide may improve the hematological response, but with a poorer tolerance. Use of anti-CD38 monoclonal antibodies is being evaluated in this population. Hemodialysis with high-flux or high-cut-off membranes, combined to chemotherapy, may improve renal function recovery. Management of multiple myeloma have to be adapted in patients with chronic kidney disease, dialysis or kidney transplantation. Because of improvement in global survival, kidney transplantation remains an option to consider in selected patients. Collaboration between hematologists and nephrologists is essential throughout the course of the disease.
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Affiliation(s)
- Mélanie Try
- Centre hospitalier universitaire de Bicêtre, assistance publique-hôpitaux de Paris (APHP), université Paris-Saclay, service de néphrologie, dialyse et transplantation, 94270 Le Kremlin-Bicêtre, France; Groupe de Recherche Interdisciplinaire Francophone en Onco-Néphrologie, Paris, France.
| | - Stéphanie Harel
- Centre hospitalier universitaire de Saint-Louis, assistance publique-hôpitaux de Paris (APHP), université Paris Cité, service d'immuno-hématologie, 75010 Paris, France
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Nasr SH, Kudose S, Valeri AM, Kashkouli A, Said SM, Santoriello D, Markowitz GS, Bu L, Cornell LD, Samad A, Ahmed J, Sethi S, Leung N, D'Agati VD. Clinicopathologic Characteristics of Crystalglobulin-Induced Nephropathy: A Case Series. Am J Kidney Dis 2024:S0272-6386(24)00837-0. [PMID: 38908425 DOI: 10.1053/j.ajkd.2024.04.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/17/2024] [Accepted: 04/24/2024] [Indexed: 06/24/2024]
Abstract
RATIONALE & OBJECTIVE Crystalglobulinemia is a rare syndrome characterized by intravascular crystallization of monoclonal immunoglobulins (MIg). Data on kidney involvement are limited to case reports. This series characterizes the clinicopathologic spectrum of crystalglobulin-induced nephropathy (CIN). STUDY DESIGN Case series. SETTING & PARTICIPANTS Nineteen CIN cases identified from the nephropathology archives of Mayo Clinic and Columbia University. CIN was defined by intravascular (extracellular) MIg crystals visible by light microscopy (LM) and electron microscopy (EM). RESULTS Among the cases, 68% were male, and 65% were Caucasian (median age, 56 years). Most patients presented with severe acute kidney injury (AKI) (median creatinine, 3.5mg/dL), hematuria, and mild proteinuria (median, 1.1g/day). Common extrarenal manifestations were constitutional (67%), cutaneous (56%), and rheumatologic (50%). Fifty percent of cases had hypocomplementemia. The hematologic disorders were monoclonal gammopathy of renal significance (MGRS) (72%), lymphoma (17%), or myeloma (11%), with 65% of these disorders discovered concomitantly with CIN. All patients had MIg identified on serum protein electrophoresis/immunofixation (IgGκ in 65%). The serum free light chain ratio was outside the renal range in 40%, and bone marrow biopsy detected the responsible clone in 67%. On LM, crystals involved glomeruli (100%) and vessels (47%), often with an inflammatory reaction (89%) and fibrin (58%). All cases exhibited crystal substructures (mostly paracrystalline) by EM. Immunofluorescence on paraffin-embedded tissue was more sensitive than frozen tissue (92% vs 47%) for demonstrating the crystal composition (IgGκ in 63%). Follow-up observation (median, 20 months) was available in 16 patients. Eighty-one percent received steroids, 44% plasmapheresis, 38% hemodialysis, and 69% chemotherapy. Ninety-percent of patients who received clone-directed therapy achieved kidney recovery versus 20% of those who did not (P=0.02). LIMITATIONS Retrospective design, small sample size. CONCLUSIONS CIN is a rare cause of nephropathy associated with lymphoplasmacytic disorders (mostly MGRS) and typically presents with severe AKI and extrarenal manifestations. Diagnosis often requires immunofluorescence performed on paraffin-embedded kidney tissue. Prompt initiation of clone-directed therapy, coupled with corticosteroids and plasmapheresis, may lead to recovery of kidney function.
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Affiliation(s)
- Samih H Nasr
- Department of Laboratory Medicine and Pathology, Rochester, Minnesota.
| | - Satoru Kudose
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Anthony M Valeri
- Division of Nephrology, Columbia University Medical Center, New York, New York
| | - Ali Kashkouli
- Division of Renal Medicine; Emory University, Atlanta, Georgia
| | - Samar M Said
- Mayo Clinic, and Department of Pathology, Olmsted County Medical Center, Rochester, Minnesota
| | - Dominick Santoriello
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Glen S Markowitz
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York
| | - Lihong Bu
- Department of Laboratory Medicine and Pathology, Rochester, Minnesota
| | - Lynn D Cornell
- Department of Laboratory Medicine and Pathology, Rochester, Minnesota
| | - Adel Samad
- Kidney and Hypertension Associates, Orland Park, Illinois
| | | | - Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Rochester, Minnesota
| | | | - Vivette D D'Agati
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, New York.
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Bartoli G, Dello Strologo A, Grandaliano G, Pesce F. Updates on C3 Glomerulopathy in Kidney Transplantation: Pathogenesis and Treatment Options. Int J Mol Sci 2024; 25:6508. [PMID: 38928213 PMCID: PMC11204074 DOI: 10.3390/ijms25126508] [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: 04/23/2024] [Revised: 06/01/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
C3 glomerulopathy is a rare disease, characterized by an abnormal activation of the complement's alternative pathway that leads to the accumulation of the C3 component in the kidney. The disease recurs in more than half of kidney transplant recipients, with a significant impact on graft survival. Recurrence of the primary disease represents the second cause of graft loss after organ rejection. In C3 glomerulopathy, there are several risk factors which can promote a recurrence during transplantation, such as delayed graft function, infection and monoclonal gammopathy. All these events can trigger the alternative complement pathway. In this review, we summarize the impact of C3 glomerulopathy on kidney grafts and present the latest treatment options. The most widely used treatments for the disease include corticosteroids and mycophenolate mofetil, which are already used chronically by kidney transplant recipients; thus, additional treatments for C3 glomerulopathy are required. Currently, several studies using anti-complement drugs (i.e., eculizumab, Ravalizumab, avacopan) for C3 glomerulopathy in kidney transplant patients are ongoing with encouraging results.
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Affiliation(s)
- Giulia Bartoli
- Department of Translational Medicine and Surgery, Università Cattolica dl Sacro Cuore, 00168 Rome, Italy; (G.B.); (A.D.S.); (G.G.)
| | - Andrea Dello Strologo
- Department of Translational Medicine and Surgery, Università Cattolica dl Sacro Cuore, 00168 Rome, Italy; (G.B.); (A.D.S.); (G.G.)
| | - Giuseppe Grandaliano
- Department of Translational Medicine and Surgery, Università Cattolica dl Sacro Cuore, 00168 Rome, Italy; (G.B.); (A.D.S.); (G.G.)
- Nephrology, Dialysis and Transplantation Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
| | - Francesco Pesce
- Department of Translational Medicine and Surgery, Università Cattolica dl Sacro Cuore, 00168 Rome, Italy; (G.B.); (A.D.S.); (G.G.)
- Division of Renal Medicine, “Ospedale Isola Tiberina—Gemelli Isola”, 00186 Rome, Italy
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Wang Y, Chen D, Hu R, Zhang Y, Liang D, Xu F, Liu F, Zhu X, Lin Y, Yang X, Liu X, Xing G, Liang S, Zeng C. Clinicopathological Characteristics of Light and Heavy Chain Deposition Disease: A Case Series. Am J Kidney Dis 2024:S0272-6386(24)00757-1. [PMID: 38750878 DOI: 10.1053/j.ajkd.2024.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 02/19/2024] [Accepted: 03/09/2024] [Indexed: 07/04/2024]
Abstract
RATIONALE & OBJECTIVE Light and heavy chain deposition disease (LHCDD) is a rare form of monoclonal immunoglobulin (Ig) deposition disease, and limited clinical data are available characterizing this condition. Here we describe the clinicopathological characteristics and outcomes of LHCDD. STUDY DESIGN Case series. SETTING & PARTICIPANTS 13 patients with biopsy-proven LHCDD diagnosed between January 2008 and December 2022 at one of 2 Chinese medical centers. FINDINGS Among the 13 patients described, 6 were men and 7 were women, with a mean age of 52.6±8.0 years. Patients presented with hypertension (76.9%), anemia (84.6%), increased serum creatinine concentrations (84.6%; median, 1.7mg/dL), proteinuria (100%; average urine protein, 3.0g/24h), nephrotic syndrome (30.8%), and microscopic hematuria (76.9%). Serum immunofixation electrophoresis showed monoclonal Ig for 11 patients (84.6%). Serum free light chain ratios were abnormal in 11 patients (84.6%), and heavy/light chain ratios were abnormal in 9 of 10 patients (90%) with available data. Five patients were diagnosed with multiple myeloma. A histological diagnosis of nodular mesangial sclerosis was made in 10 patients (76.9%). Immunofluorescence demonstrated deposits of IgG subclass in 7 patients (γ-κ, n=4; γ-λ, n=3) and IgA in 5 patients (α-κ, n=2; α-λ, n=3). Six patients underwent IgG subclass staining (γ1, n=3; γ2, n=2; γ3, n=1). The deposits of IgD-κ were confirmed by mass spectrometry in 1 patient. Among 12 patients for whom data were available during a median of 26.5 months, 11 received chemotherapy and 1 received conservative treatment. One patient died, and disease progressed to kidney failure in 3 (25%). Among the 9 patients evaluable for hematological and kidney disease progression, 5 (56%) had a hematologic response and 1 (11%) exhibited improvement in kidney disease. LIMITATIONS Retrospective descriptive study, limited number of patients, urine protein electrophoresis or immunofixation electrophoresis test results missing for most patients. CONCLUSIONS In this case series of LHCDD, light and heavy chain deposition in kidney tissues were most frequent with monoclonal IgG1-κ. Among patients with evaluable data, more than half had a hematologic response, but a kidney response was uncommon.
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Affiliation(s)
- Yujie Wang
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Dacheng Chen
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Ruimin Hu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou
| | - Yuan Zhang
- Department of Nephrology, Affiliated Hospital of Nantong University, Nantong, China
| | - Dandan Liang
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Feng Xu
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Feng Liu
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Xiaodong Zhu
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Yao Lin
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Nanjing Medical University, Nanjing
| | - Xue Yang
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Xumeng Liu
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing
| | - Guolan Xing
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou.
| | - Shaoshan Liang
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing.
| | - Caihong Zeng
- National Clinical Research Center for Kidney Diseases, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing.
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Verbinnen M, Sprangers B, Abrahams AC, Koshy P, Van Kruijsdijk RCM, Philipse E, Michalak M, Delforge M, Vos JMI, Wetzels J, Dendooven A, Van Craenenbroeck AH. Proliferative glomerulonephritis with monoclonal immunoglobulin deposits in the native or posttransplant kidney. Nephrol Dial Transplant 2024; 39:888-892. [PMID: 38192041 DOI: 10.1093/ndt/gfae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Indexed: 01/10/2024] Open
Affiliation(s)
- Margo Verbinnen
- Department of Nephrology, University Hospitals Leuven, Leuven, Belgium
| | - Ben Sprangers
- Department of Nephrology, General Hospital Oost-Limburg, Genk, Belgium
| | - Alferso C Abrahams
- Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Priyanka Koshy
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, Nephrology and Renal Transplantation Research Group, KU Leuven, Leuven, Belgium
| | | | - Ester Philipse
- Department of Nephrology, General Hospital AZ Voorkempen, Antwerp, Belgium
| | | | - Michel Delforge
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Josephine M I Vos
- Department of Hematology, Amsterdam UMC, University of Amsterdam, Cancer Center Amsterdam & LYMMCARE, Amsterdam, The Netherlands
| | - Jack Wetzels
- Department of Nephrology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Amélie Dendooven
- Department of Pathology, University Hospitals Gent, Gent, Belgium
| | - Amaryllis H Van Craenenbroeck
- Department of Nephrology, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, Nephrology and Renal Transplantation Research Group, KU Leuven, Leuven, Belgium
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Attygalle AD, Chan JKC, Coupland SE, Du MQ, Ferry JA, Jong DD, Gratzinger D, Lim MS, Naresh KN, Nicolae A, Ott G, Rosenwald A, Schuh A, Siebert R. The 5th edition of the World Health Organization Classification of mature lymphoid and stromal tumors - an overview and update. Leuk Lymphoma 2024; 65:413-429. [PMID: 38189838 DOI: 10.1080/10428194.2023.2297939] [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: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 01/09/2024]
Abstract
The purpose of this review is to give an overview on the conceptual framework and major developments of the upcoming 5th edition of the World Health Organization (WHO) Classification of Haematolymphoid tumours (WHO-HAEM5) and to highlight the most significant changes made in WHO-HAEM5 compared with the revised 4th edition (WHO-HAEM4R) of lymphoid and stromal neoplasms. The changes from the revised 4th edition include the reorganization of entities by means of a hierarchical system that is realized throughout the 5th edition of the WHO classification of tumors of all organ systems, a modification of nomenclature for some entities, the refinement of diagnostic criteria or subtypes, deletion of certain entities, and introduction of new entities. For the first time, tumor-like lesions, mesenchymal lesions specific to lymph node and spleen, and germline predisposition syndromes associated with the lymphoid neoplasms are included in the classification.
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Affiliation(s)
- Ayoma D Attygalle
- Department of Histopathology, The Royal Marsden Hospital, London, UK
| | - John K C Chan
- Department of Pathology, Queen Elizabeth Hospital, Kowloon, Hong Kong, SAR China
| | - Sarah E Coupland
- Department of Molecular and Clinical Cancer Medicine, ISMIB, University of Liverpool, Liverpool, UK
- Liverpool Clinical Laboratories, Liverpool University Hospitals Foundation Trust, Liverpool, UK
| | - Ming-Qing Du
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Judith A Ferry
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Daphne de Jong
- The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Dita Gratzinger
- Department of Pathology, Stanford University School of Medicine, Stanford, USA
| | - Megan S Lim
- Memorial Sloan Kettering Cancer Center, New York City, NY, USA
| | - Kikkeri N Naresh
- Fred Hutchinson Cancer Center, University of Washington, Seattle, USA
| | - Alina Nicolae
- Department of Pathology, University Hospital of Strasbourg, Strasbourg, France
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, and Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
| | - Andreas Rosenwald
- Institute of Pathology, Julius-Maximilians-UniversitätWürzburg, and Cancer Center Mainfranken, Würzburg, Germany
| | - Anna Schuh
- Department of Oncology, University of Oxford, Oxford, UK
| | - Reiner Siebert
- Institute of Human Genetics, Ulm University and Ulm University Medical Center, Ulm, Germany
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10
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Metcalf BD, Huang J, Kanaan HD, Abukhaled J, Li W, Samarapungavan D, Zarouk S, Zhang PL. The Role of Bone Marrow Biopsy Evaluation in the Workup for Monoclonal Gammopathy of Renal Significance: A Diagnosis of Exclusion. Arch Pathol Lab Med 2024; 148:e57-e62. [PMID: 37787408 DOI: 10.5858/arpa.2022-0342-oa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2023] [Indexed: 10/04/2023]
Abstract
CONTEXT.— Monoclonal gammopathy of renal significance (MGRS) is a relatively new concept for patients with renal monoclonal protein deposition (RMPD) (except monoclonal cast nephropathy) and has been used as a reason for nephrologists to obtain a bone marrow biopsy (BMB). It takes a team of pathologists and clinicians to determine when RMPD at our institution can be defined as MGRS. OBJECTIVE.— To identify the proportion of various subtypes of tentative MGRS diagnosed by renal biopsy that can be confirmed as final MGRS after BMB. DESIGN.— One hundred thirty kidney biopsies with variants of RMPD were identified during the past 10 years. Biopsy cases with known myeloma, B-cell lymphoma, or monoclonal cast nephropathy were separated as a heavy-burden group. The remaining biopsies with RMPD were considered tentative MGRS. Their BMB and clinical indices were further analyzed to determine the final percentage of MGRS diagnoses. RESULTS.— Among the 130 renal paraprotein deposition cases, 44 (33.8%) were categorized as the heavy-burden group. In the remaining 86 cases, 33 (38.4%) with subsequent identification of myeloma (>10% of monoclonal plasma cells) or lymphoma in BMB were further considered as heavy-burden cases. Eighteen cases (18 of 86; 20.9%) did not receive follow-up BMB; thus, no further analysis was performed. BMBs diagnosed as either nonmalignant (no plasma cells; 8 of 86 cases; 9.3%) or premalignant (<10% plasma cells; 27 of 86 cases; 31.4%) were confirmed to be final MGRS (35 of 86; 40.7%). CONCLUSIONS.— The data indicate that BMB is an important element in the confirmation of MGRS.
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Affiliation(s)
- Brandon D Metcalf
- From the Department of Pathology (Metcalf, Huang, Kanaan, Li, Zhang)
| | - James Huang
- From the Department of Pathology (Metcalf, Huang, Kanaan, Li, Zhang)
| | - Hassan D Kanaan
- From the Department of Pathology (Metcalf, Huang, Kanaan, Li, Zhang)
| | | | - Wei Li
- From the Department of Pathology (Metcalf, Huang, Kanaan, Li, Zhang)
| | | | - Sami Zarouk
- the Division of Nephrology (Abukhaled, Zarouk)
| | - Ping L Zhang
- From the Department of Pathology (Metcalf, Huang, Kanaan, Li, Zhang)
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11
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Zeman D, Štork M, Švancarová L, Borský M, Pospíšilová M, Adam Z, Beňovská M, Pour L. Isoelectric focusing followed by affinity immunoblotting to detect monoclonal free light chains in monoclonal gammopathies: Comparison with immunofixation electrophoresis and free light chain ratio. Ann Clin Biochem 2024:45632231221439. [PMID: 38073192 DOI: 10.1177/00045632231221439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
BACKGROUND Isoelectric focusing (IEF) is a method with an exquisite resolution, and coupled with affinity immunoblotting (AIB), it can provide superior sensitivity to detect monoclonal free light chains (FLC). METHODS We tested the hypothesis that IEF/AIB is more sensitive and specific for monoclonal FLC detection in serum and urine samples than conventional methods, that is, electrophoresis (ELP), immunofixation (IF) and serum FLC ratio assessment. Investigation included 107 samples of 68 patients, among which 21 multiple myeloma patients were recently tested for minimal residual disease and 18 patients with AL amyloidosis. RESULTS Monoclonal FLC were detected by IEF/AIB in 37% of serum samples negative for monoclonal FLC on ELP/IF. As for urine samples, significant advantage of the IEF/AIB over ELP/IF was not demonstrated. Considering both serum and urine results, IEF/AIB definitely revealed monoclonal FLC in 20/83 (24%) of ELP/IF-negative samples. FLC ratio was abnormally high (>1.65) in all 11 patients definitely positive for monoclonal FLC kappa by IEF/AIB but also in 16/47 (34%) IEF/AIB-negative samples. Abnormally low values (<0.26) were found only in 10/28 samples (36%) positive for monoclonal FLC lambda. Appropriate use of renal FLC ratio reference range reduced the number of presumably false positives (6/47, i.e. 13%) but not false negatives (17/28, i.e. 61%). CONCLUSIONS The IEF/AIB method is more sensitive than IF and might be used in patients with negative IF results before deciding whether to proceed to minimal residual disease testing.
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Affiliation(s)
- David Zeman
- Department of Laboratory Medicine, Division of Clinical Biochemistry, University Hospital Brno, Brno, Czech Republic
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Martin Štork
- Department of Internal Medicine, Haematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lenka Švancarová
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Marek Borský
- Department of Internal Medicine, Haematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Michaela Pospíšilová
- Department of Laboratory Medicine, Division of Clinical Biochemistry, University Hospital Brno, Brno, Czech Republic
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Zdeněk Adam
- Department of Internal Medicine, Haematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Miroslava Beňovská
- Department of Laboratory Medicine, Division of Clinical Biochemistry, University Hospital Brno, Brno, Czech Republic
- Department of Laboratory Methods, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Luděk Pour
- Department of Internal Medicine, Haematology and Oncology, University Hospital Brno and Faculty of Medicine, Masaryk University, Brno, Czech Republic
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12
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Zhu L, Wang L, Shi H, Jiang L, Li X, Shao C, Yan Y, Dong B, Zou W, Zuo L. Combined crystal-storing histiocytosis, light chain proximal tubulopathy, and light chain crystalline podocytopathy in a patient with multiple myeloma: a case report and literature review. Ren Fail 2023; 45:2145970. [PMID: 36632756 PMCID: PMC9848311 DOI: 10.1080/0886022x.2022.2145970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Crystal-storing histiocytosis (CSH), light chain proximal tubulopathy (LCPT), and light chain crystalline podocytopathy (LCCP) are rare complications of multiple myeloma (MM) or monoclonal gammopathy of renal significance, and their diagnoses are challenging. CASE PRESENTATION In this case, a 69-year-old Chinese woman presented with suspicious Fanconi syndrome with renal insufficiency. Immunofixation electrophoresis of both serum and urine revealed elevated immunoglobulin G kappa (IgGkappa) and kappa light chain. Bone marrow aspirate revealed 15% plasma cells with considerable cytoplasmic granular inclusions and needle-shaped crystals. Renal biopsy confirmed the final pathologic diagnosis of kappa-restricted CSH, combined LCPT and LCCP by immunoelectron microscopy. A number of special casts were present which could easily be misdiagnosed as light chain cast nephropathy. Immunofluorescence on frozen tissue presented false negative for kappa light chain, as ultimately proven by paraffin-embedded tissue after pronase digestion. MM and CSH were diagnosed, and two cycles of chemotherapy were given. The patient subsequently refused further chemotherapy, and her renal function remained relatively stable during a 2.5-year follow-up period. CONCLUSIONS In conclusion, we report a rare case of generalized kappa-restricted CSH involving bone marrow and kidney, combined with LCPT and LCCP, provide a comprehensive summary of renal CSH, and propose a new nomenclature of monoclonal immunoglobulin-induced crystalline nephrology. The presentation of monoclonal immunoglobulin and Fanconi syndrome should suggest the presence of monoclonal immunoglobulin-induced crystalline nephrology. Use of paraffin-embedded tissue after pronase digestion and immunoelectron microscopy is beneficial to improve the sensitivity of diagnosis.
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Affiliation(s)
- Li Zhu
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Lei Wang
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Hongxia Shi
- Electron Microscope Lab, Peking University People’s Hospital, Beijing, China,National Clinical Research Center for Hematologic Disease, Peking University People’s Hospital, Peking University Institute of Hematology, Beijing, China
| | - Lei Jiang
- Electron Microscope Lab, Peking University People’s Hospital, Beijing, China
| | - Xin Li
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Chunying Shao
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Yu Yan
- Department of Nephrology, Peking University People’s Hospital, Beijing, China,CONTACT Yu Yan
| | - Bao Dong
- Department of Nephrology, Peking University People’s Hospital, Beijing, China,Bao Dong Department of Nephrology, Peking University People’s Hospital, No.11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
| | - Wanzhong Zou
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Li Zuo
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
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13
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Barata R, Pereira TA, Carvalho D, Cardoso F, Moraes-Fontes MF, Fernandes C, Góis M, Viana H, Ribeiro F, Nolasco F. Revisiting Schnitzler syndrome: A rare severe form of acute kidney injury and monoclonal gammopathy. Nefrologia 2023; 43 Suppl 2:99-101. [PMID: 36529657 DOI: 10.1016/j.nefroe.2022.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 02/23/2022] [Indexed: 06/17/2023] Open
Affiliation(s)
- Rui Barata
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal.
| | - Tiago Assis Pereira
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Dulce Carvalho
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Filipa Cardoso
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Maria Francisca Moraes-Fontes
- Autoimmune Unit/Medicine 7.2, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Cândida Fernandes
- Dermatology Department, Hospital de Santo António dos Capuchos - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Mário Góis
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal; Laboratory of Renal Morphology, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Helena Viana
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal; Laboratory of Renal Morphology, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Francisco Ribeiro
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
| | - Fernando Nolasco
- Nephrology Department, Hospital Curry Cabral - Centro Hospitalar Universitário de Lisboa Central, Lisbon, Portugal
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14
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Romagnani P, Kitching AR, Leung N, Anders HJ. The five types of glomerulonephritis classified by pathogenesis, activity and chronicity (GN-AC). Nephrol Dial Transplant 2023; 38:ii3-ii10. [PMID: 37218714 PMCID: PMC10635795 DOI: 10.1093/ndt/gfad067] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Indexed: 05/24/2023] Open
Abstract
Glomerulonephritis (GN) is a diverse group of immune-mediated disorders. Currently, GN is classified largely by histological patterns that are difficult to understand and teach, and most importantly, do not indicate treatment choices. Indeed, altered systemic immunity is the primary pathogenic process and the key therapeutic target in GN. Here, we apply a conceptual framework of immune-mediated disorders to GN guided by immunopathogenesis and hence immunophenotyping: (i) infection-related GN require pathogen identification and control; (ii) autoimmunity-related GN, defined by presence of autoantibodies and (iii) alloimmunity-related GN in transplant recipients both require the suppression of adaptive immunity in lymphoid organs and bone marrow; (iv) autoinflammation-related GN, e.g. inborn errors of immunity diagnosed by genetic testing, requires suppression of single cytokine or complement pathways; and (v) Monoclonal gammopathy-related GN requires B or plasma cell clone-directed therapy. A new GN classification should include disease category, immunological activity to tailor the use of the increasing number of immunomodulatory drugs, and chronicity to trigger standard chronic kidney disease care including the evolving spectrum of cardio-renoprotective drugs. Certain biomarkers allow diagnosis and the assessment of immunological activity and disease chronicity without kidney biopsy. The use of these five GN categories and a therapy-focused GN classification is likely to overcome some of the existing hurdles in GN research, management and teaching by reflecting disease pathogenesis and guiding the therapeutic approach.
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Affiliation(s)
- Paola Romagnani
- Department of Experimental and Biomedical Sciences “Mario Serio” and Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy
| | - A Richard Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, Victoria, Australia
- Departments of Nephrology and Paediatric Nephrology, Monash Health, Clayton, Victoria, Australia
| | - Nelson Leung
- Divisions of Nephrology and Hypertension and of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Hans-Joachim Anders
- Division of Nephrology, Department of Medicine IV, University Hospital, Ludwig- Maximilians-University Munich, Munich, Germany
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15
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Ogura Y, Mimura I. Epigenetic roles in clonal hematopoiesis and aging kidney-related chronic kidney disease. Front Cell Dev Biol 2023; 11:1281850. [PMID: 37928907 PMCID: PMC10623128 DOI: 10.3389/fcell.2023.1281850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/11/2023] [Indexed: 11/07/2023] Open
Abstract
Accumulation of somatic hematopoietic stem cell mutations with aging has been revealed by the recent genome-wide analysis. Clonal expansion, known as clonal hematopoiesis of indeterminate potential (CHIP), is a premalignant condition of hematological cancers. It is defined as the absence of definitive morphological evidence of a hematological neoplasm and occurrence of ≥2% of mutant allele fraction in the peripheral blood. In CHIP, the most frequently mutated genes are epigenetic regulators such as DNMT3A, TET2, and ASXL1. CHIP induces inflammation. CHIP is shown to be associated with not only hematological malignancy but also non-malignant disorders such as atherosclerosis, cardiovascular diseases and chronic liver disease. In addition, recent several large clinical trials have shown that CHIP is also the risk factor for developing chronic kidney disease (CKD). In this review article, we proposed novel findings about CHIP and CHIP related kidney disease based on the recent basic and clinical research. The possible mechanism of the kidney injury in CHIP is supposed to be due to the clonal expansion in both myeloid and lymphoid cell lines. In myeloid cell lines, the mutated macrophages increase the inflammatory cytokine level and induce chronic inflammation. It leads to epigenetic downregulation of kidney and macrophage klotho level. In lymphoid cell lines, CHIP might be related to monoclonal gammopathy of renal significance (MGRS). It describes any B cell or plasma cell clonal disorder that does not fulfill the criteria for cancer yet produces a nephrotoxic monoclonal immunoglobulin that leads to kidney injury or disease. MGRS causes M-protein related nephropathy frequently observed among aged CKD patients. It is important to consider the CHIP-related complications such as hematological malignancy, cardiovascular diseases and metabolic disorders in managing the elderly CKD patients. There are no established therapies for CHIP and CHIP-related CKD yet. However, recent studies have supported the development of effective CHIP therapies, such as blocking the expansion of aberrant HSCs and inhibiting chronic inflammation. In addition, drugs targeting the epigenetic regulation of Klotho in the kidney and macrophages might be therapeutic targets of CHIP in the kidney.
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Affiliation(s)
| | - Imari Mimura
- Division of Nephrology and Endocrinology, The University of Tokyo Graduate School of Medicine, Tokyo, Japan
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16
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De La Flor JC, Monroy-Condori M, Apaza-Chavez J, Arenas-Moncaleano I, Díaz F, Guerra-Torres XE, Morales-Montoya JL, Lerma-Verdejo A, Sandoval E, Villa D, Vieru CM. Monoclonal Gammopathy of Renal Significance with Deposits of Infrequent Morphology: Two Case Reports of Light and Heavy Chain Deposition Disease with Atypical Presentation and Literature Review. MEDICINES (BASEL, SWITZERLAND) 2023; 10:55. [PMID: 37887262 PMCID: PMC10608252 DOI: 10.3390/medicines10100055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/02/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023]
Abstract
BACKGROUND Monoclonal immunoglobulin deposition disease (MIDD) includes three entities: light chain deposition disease (LCDD), heavy chain deposition disease (HCDD) and light and heavy chain deposition disease (LHCDD). The renal presentation can manifest with varying degrees of proteinuria and/or nephrotic syndrome, microhematuria, and often leads to end-stage renal disease. Given the rarity of LHCDD, therapeutic approaches for this condition remain inconclusive, as clinical trials are limited. CASE PRESENTATION We report two male patients with underlying monoclonal gammopathy of renal significance (MGRS) associated with LHCDD lesions. Both cases had non-nephrotic proteinuria, moderately impaired renal function, and normal levels of C3 and C4. Light microscopy of the renal biopsies in both patients did not show lesions of nodular glomerulosclerosis. Immunofluorescence showed a staining pattern with interrupted linear IgA-κ in patient #1 and IgA-λ in patient #2 only along the glomerular basement membrane (GBM). Electron microscopy of patient #1 revealed electrodense deposits in the subendothelial and mesangial areas only along the GBM. DISCUSSION In this case series, we discuss the clinical, analytical, and histopathological findings of two rare cases of LHCDD. Both patients exhibited IgA monoclonality and were diagnosed with monoclonal gammopathy of undetermined significance (MGUS) by the hematology department at the time of renal biopsy. Treatment with steroids and cytotoxic agents targeting the clone cells responsible for the deposition disease resulted in a favorable renal and hematologic response.
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Affiliation(s)
- José C. De La Flor
- Department of Nephrology, Hospital Central de la Defensa, 28046 Madrid, Spain
| | - Maribel Monroy-Condori
- Section of Nephrology and Hypertension, Hospital General Universitario Nuestra Señora del Prado, 45600 Talavera de la Reina, Spain; (M.M.-C.); (I.A.-M.); (X.E.G.-T.); (J.L.M.-M.)
| | | | - Iván Arenas-Moncaleano
- Section of Nephrology and Hypertension, Hospital General Universitario Nuestra Señora del Prado, 45600 Talavera de la Reina, Spain; (M.M.-C.); (I.A.-M.); (X.E.G.-T.); (J.L.M.-M.)
| | - Francisco Díaz
- Department of Anatomic Pathology, Hospital Gregorio Marañón, 28007 Madrid, Spain; (F.D.); (C.-M.V.)
| | - Xavier E. Guerra-Torres
- Section of Nephrology and Hypertension, Hospital General Universitario Nuestra Señora del Prado, 45600 Talavera de la Reina, Spain; (M.M.-C.); (I.A.-M.); (X.E.G.-T.); (J.L.M.-M.)
| | - Jorge L. Morales-Montoya
- Section of Nephrology and Hypertension, Hospital General Universitario Nuestra Señora del Prado, 45600 Talavera de la Reina, Spain; (M.M.-C.); (I.A.-M.); (X.E.G.-T.); (J.L.M.-M.)
| | - Ana Lerma-Verdejo
- Department of Hematology, Hospital General Nuestra Señora del Prado, 45600 Talavera de la Reina, Spain;
| | - Edna Sandoval
- Department of Hematology, Hospital Central de la Defensa, 28046 Madrid, Spain;
| | - Daniel Villa
- Department of Nephrology, Hospital Clínica Universiad Navarra, 31009 Pamplona, Spain;
| | - Coca-Mihaela Vieru
- Department of Anatomic Pathology, Hospital Gregorio Marañón, 28007 Madrid, Spain; (F.D.); (C.-M.V.)
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17
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Tsuji K, Okuyama Y, Asano Y, Yamaoka K, Kitamura S, Wada J. Co-occurrence of Three Systemic Diseases: ANCA-associated Vasculitis, Sjögren's syndrome and Sarcoidosis. Intern Med 2023; 62:2215-2221. [PMID: 36450474 PMCID: PMC10465288 DOI: 10.2169/internalmedicine.0966-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/20/2022] [Indexed: 12/02/2022] Open
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), Sjögren's syndrome (SjS), and sarcoidosis are systemic diseases targeting multiple organs. While a careful differential diagnosis of these diseases is often required, their co-occurrence in the same patient has been previously reported. We herein report a 58-year-old Japanese man diagnosed with the co-occurrence of three systemic diseases (AAV, SjS, and sarcoidosis) in addition to monoclonal gammopathy of undetermined significance (MGUS), which emphasizes the importance of considering the possible co-occurrence of these diseases as well as their differentiation.
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Affiliation(s)
- Kenji Tsuji
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
| | - Yuka Okuyama
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
| | - Yosuke Asano
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
| | - Kimitomo Yamaoka
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
| | - Shinji Kitamura
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
| | - Jun Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Academic Field of Medicine, Dentistry, and Pharmaceutical Sciences, Japan
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18
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Syed F, Hassan MA, Joy J, Awolumate OJ, Nwaogwugw U. A Complex Case of Extensive Systemic Amyloidosis With Underlying Monoclonal Gammopathy. Cureus 2023; 15:e43753. [PMID: 37727200 PMCID: PMC10506623 DOI: 10.7759/cureus.43753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 08/18/2023] [Indexed: 09/21/2023] Open
Abstract
Systemic amyloid light chain, or primary amyloidosis (AL amyloidosis), is a serious medical condition that leads to the deposition of abnormal proteins called amyloid fibrils in various organs of the body. AL amyloidosis can present with different symptoms, which can make diagnosis challenging. This case report presents a clinical scenario of a 53-year-old female patient who had come in for shortness of breath and lower extremity swelling and was found to have acute on chronic pulmonary embolism. The patient had a history of systemic amyloidosis diagnosed with a kidney and duodenal biopsy. She also had a bone marrow biopsy done and was found to have IgG monoclonal gammopathy. Throughout the hospital course, patients required cautious diuretic use given the worsening kidney function. She was given intravenous anticoagulation initially and later switched to oral medication on discharge. Due to the aggressive nature of amyloidosis, a decision was made to start the patient on chemotherapy in an outpatient setting. This case presents an interesting scenario of systemic amyloidosis with concomitant monoclonal gammopathy that was complicated by acute pulmonary embolism. The case is important as it shows the different levels of amyloidosis and teaches us the benefit of taking a multidisciplinary approach to making a concrete plan for patients with advanced amyloidosis disease.
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Affiliation(s)
- Faisal Syed
- Internal Medicine, Howard University Hospital, Washington, USA
| | | | - Jeswin Joy
- Internal Medicine, Howard University Hospital, Washington, USA
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19
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Beck LH, Ayoub I, Caster D, Choi MJ, Cobb J, Geetha D, Rheault MN, Wadhwani S, Yau T, Whittier WL. KDOQI US Commentary on the 2021 KDIGO Clinical Practice Guideline for the Management of Glomerular Diseases. Am J Kidney Dis 2023; 82:121-175. [PMID: 37341661 DOI: 10.1053/j.ajkd.2023.02.003] [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: 12/21/2022] [Accepted: 02/20/2023] [Indexed: 06/22/2023]
Abstract
The KDIGO 2021 Clinical Practice Guideline for the Management of Glomerular Diseases represents the first update to this set of recommendations since the initial set of KDIGO guideline recommendations was published in 2012. The pace of growth in our molecular understanding of glomerular disease has quickened and a number of newer immunosuppressive and targeted therapies have been introduced since the original set of guideline recommendations, making such an update necessary. Despite these updates, many areas of controversy remain. In addition, further updates since the publication of KDIGO 2021 have occurred which this guideline does not encompass. With this commentary, the KDOQI work group has generated a chapter-by-chapter companion opinion article that provides commentary specific to the implementation of the KDIGO 2021 guideline in the United States.
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Affiliation(s)
- Laurence H Beck
- Division of Nephrology, Department of Medicine, Chobanian & Avedisian School of Medicine, Boston University, Boston, Massachusetts
| | - Isabelle Ayoub
- Department of Medicine, Division of Nephrology, Wexner Medical, The Ohio State University, Columbus, Ohio
| | - Dawn Caster
- Department of Medicine, School of Medicine, University of Louisville, Louisville, Kentucky
| | | | - Jason Cobb
- Division of Renal Medicine, Department of Medicine, School of Medicine, Emory University, Atlanta, Georgia
| | - Duvuru Geetha
- Division of Nephrology, Johns Hopkins University, Baltimore, Maryland
| | - Michelle N Rheault
- Department of Pediatrics, Division of Pediatric Nephrology, Masonic Children's Hospital, University of Minnesota, Minneapolis, Minnesota
| | - Shikha Wadhwani
- Division of Nephrology and Hypertension, Northwestern University, Chicago, Illinois
| | - Timothy Yau
- Division of Nephrology, Department of Medicine, School of Medicine, Washington University, St. Louis, Missouri
| | - William L Whittier
- Division of Nephrology, Rush University Medical Center, Chicago, Illinois
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20
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Miura S, Katayama K, Sugimoto Y, Tanaka F, Mori M, Takahashi D, Saiki R, Hirabayashi Y, Murata T, Tawara I, Dohi K. Discordance of light chain isotypes between serum and glomerular deposits in proliferative glomerulonephritis with monoclonal IgG deposits: a case report and review of the literature. BMC Nephrol 2023; 24:199. [PMID: 37393252 PMCID: PMC10314569 DOI: 10.1186/s12882-023-03256-5] [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: 05/21/2022] [Accepted: 06/28/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND Proliferative glomerulonephritis with monoclonal immunoglobulin G (IgG) deposits (PGNMID) is a disease entity with nonorganized granular glomerular deposition with monoclonal proteins of both heavy and light chains. Dysproteinemia was observed in only 30% of the patients with PGNMID. We herein report a case of PGNMID with discrepancy between serum and glomerular deposits. CASE PRESENTATION The patient was a 50-year-old man who had been followed at a local clinic due to hypertension, type 2 diabetes, hyperlipidemia, hyperuricemia, fatty liver, and obesity. Proteinuria had been noted five years previously, and he had been referred to a hematology department due to hyperproteinemia, high gamma globulin, and κ Bence-Jones protein (BJP) positivity one year previously. Bone marrow aspiration showed 5% plasma cells, and he was referred to the nephrology department to evaluate persistent proteinuria. He was hypertensive, and his estimated glomerular filtration rate was 54.2 ml/min/1.73 m2. His urinary protein level was 0.84 g/g⋅Cr. Urine and serum immunofixation showed BJP-κ type and IgG-κ type, respectively. Kidney biopsy showed an increase in mesangial cells and matrix without nodular lesions under a light microscope. Immunofluorescence microscopy showed granular deposits of IgG and C3 on the capillary wall and weak positivity for C1q. IgG3 was predominant among the IgG subclasses, and intraglomerular κ and λ staining was negative for κ and positive for λ. Direct fast scarlet staining was negative. Electron microscopy showed lumpy deposits without a fibrillar structure in the subepithelial area. Based on the above findings, a diagnosis of membranous nephropathy-type PGNMID was made. Since proteinuria increased gradually after three years of treatment with valsartan (40 mg, daily), oral prednisolone (30 mg, daily) was initiated, which led to decreased proteinuria. The dose of oral prednisolone was gradually tapered to 10 mg per day. At that time, proteinuria was 0.88 g/g⋅Cr. We found 204 cases in 81 articles in the PubMed database, among which 8 showed discrepancy in the heavy and/or light chains between serum and kidney. CONCLUSIONS We experienced a case of membranous nephropathy-type PGNMID with discrepancy in light chains between serum and kidney that was successfully treated with oral prednisolone.
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Affiliation(s)
- Shoko Miura
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Kan Katayama
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Yuka Sugimoto
- Department of Hematology and Oncology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Fumika Tanaka
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Mutsuki Mori
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Daisuke Takahashi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Ryosuke Saiki
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Yosuke Hirabayashi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Tomohiro Murata
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
| | - Isao Tawara
- Department of Hematology and Oncology, Mie University Graduate School of Medicine, Tsu, Japan
| | - Kaoru Dohi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-8507 Japan
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21
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Anders HJ, Kitching AR, Leung N, Romagnani P. Glomerulonephritis: immunopathogenesis and immunotherapy. Nat Rev Immunol 2023; 23:453-471. [PMID: 36635359 PMCID: PMC9838307 DOI: 10.1038/s41577-022-00816-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/23/2022] [Indexed: 01/14/2023]
Abstract
'Glomerulonephritis' (GN) is a term used to describe a group of heterogeneous immune-mediated disorders characterized by inflammation of the filtration units of the kidney (the glomeruli). These disorders are currently classified largely on the basis of histopathological lesion patterns, but these patterns do not align well with their diverse pathological mechanisms and hence do not inform optimal therapy. Instead, we propose grouping GN disorders into five categories according to their immunopathogenesis: infection-related GN, autoimmune GN, alloimmune GN, autoinflammatory GN and monoclonal gammopathy-related GN. This categorization can inform the appropriate treatment; for example, infection control for infection-related GN, suppression of adaptive immunity for autoimmune GN and alloimmune GN, inhibition of single cytokines or complement factors for autoinflammatory GN arising from inborn errors in innate immunity, and plasma cell clone-directed or B cell clone-directed therapy for monoclonal gammopathies. Here we present the immunopathogenesis of GN and immunotherapies in use and in development and discuss how an immunopathogenesis-based GN classification can focus research, and improve patient management and teaching.
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Affiliation(s)
- Hans-Joachim Anders
- Division of Nephrology, Department of Medicine IV, University Hospital, Ludwig Maximilian University Munich, Munich, Germany.
| | - A Richard Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
- Department of Nephrology, Monash Health, Clayton, VIC, Australia
- Department of Paediatric Nephrology, Monash Health, Clayton, VIC, Australia
| | - Nelson Leung
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Paola Romagnani
- Department of Experimental and Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
- Nephrology and Dialysis Unit, Meyer Children's Hospital IRCCS, Florence, Italy
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22
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Choudhuri S, Rainone F. Assessment of current clinical practice throughout the UK for the diagnosis and management of monoclonal gammopathy of renal significance. EJHAEM 2023; 4:410-418. [PMID: 37206284 PMCID: PMC10188446 DOI: 10.1002/jha2.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/31/2023] [Indexed: 05/21/2023]
Abstract
Since the inception of the term monoclonal gammopathy of renal significance (MGRS) in 2012 by the International Kidney and Monoclonal Gammopathy Research Group, there have been no consensus guidelines specifically pertaining to the UK regarding to patient management. We aimed to identify both regional and cross-discipline variation in current clinical practice, to provide insight and rationale for a potential standardised pathway in the future. A national survey of 88 consultants from the disciplines of haematology and nephrology was conducted between June 2020 and July 2021. Agreement was evident for aspects of the diagnostic pathway, including presenting features likely to raise suspicion of MGRS and the most pertinent confounding factors to consider before renal biopsy. However, significant variability was identified in both the cohort of diagnostic tests used, as well as urinary work-up for patients with suspected MGRS. Treatment and monitoring frequency was also an aspect of management identified as variable. Despite differences in clinical practice across the UK, MGRS diagnosis was widely regarded to be the joint responsibility of both disciplines. The results provide an indication of inter-regional and interdisciplinary differences in practice, highlighting the need for improved awareness and standardised protocol for management of MGRS that applies to the UK population.
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23
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Napodano C, Ioannilli L, Basile V, Gulli F, Carnazzo V, Pignalosa S, Di Biase L, Cavaleri E, Racco C, Equitani F, Marino M, Basile U. Laboratory and Clinical Settings of Heavy/Light Chain (HLC) Assays in the Management of Monoclonal Gammopathies and Multiple Myeloma. J Pers Med 2023; 13:jpm13050743. [PMID: 37240913 DOI: 10.3390/jpm13050743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/19/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
The antibody-related immune response is mediated by immunoglobulins (Igs), soluble circulating glycoproteins produced by activated B cells that, upon the recognition of specific epitopes on pathogen surfaces, activate, proliferate, and differentiate into antibody-secreting plasma cells. Although the antibodies are effectors of the humoral immune adaptive response, their overproduction in response to a dysregulated proliferation of clonal plasma cell production in tumoral conditions (i.e., multiple myeloma), enriches the serum and urinary matrices, assuming the crucial role of biomarkers. Multiple myeloma (MM) is a plasma cell dyscrasia characterized by the expansion and accumulation of clonally activated plasma cells in bone marrow, determining the release of high amounts of monoclonal component (MC) that can be detected as intact immunoglobulin (Ig), immunoglobulin fragments, or free light chains (FLCs). The importance of detecting biomarkers for the diagnosis, monitoring, and prognosis of diseases is highlighted by the international guidelines that recommend specific assays for the analysis of intact Igs and FLC. Moreover, a developed assay called Hevylite® allows for the quantification of immunoglobulins that are both involved (iHLC) and not involved (uHLC) in the tumor process; this is a fundamental aspect of following up the patient's workup and evaluating the progression of disease, together with the treatments response. We here summarize the major points of the complex scenario involving monoclonal gammopathies and MM clinical management in view of advantages derived for the use of Hevylite®.
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Affiliation(s)
- Cecilia Napodano
- Department of Laboratory Medicine and Pathology, S. Agostino Estense Hospital, 41126 Modena, Italy
| | - Laura Ioannilli
- Scientific Department, The Binding Site Italy, Part of Thermo Fisher Scientific, 24050 Bergamo, Italy
| | - Valerio Basile
- Clinical Pathology Unit and Cancer Biobank, Department of Research and Advanced Technologies, IRCCS Regina Elena National Cancer Institute, 00144 Rome, Italy
| | - Francesca Gulli
- Clinical Biochemistry Laboratory, IRCCS "Bambino Gesù" Children's Hospital, 00165 Rome, Italy
| | - Valeria Carnazzo
- Department of Clinical Pathology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
| | - Stefano Pignalosa
- Department of Clinical Pathology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
| | - Luigi Di Biase
- Department of Clinical Pathology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
| | - Erica Cavaleri
- Department of Clinical Pathology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
| | - Cosimo Racco
- Department of Clinical Pathology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
| | - Francesco Equitani
- Department of Transfusion Medicine and Immuno-Hematology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
| | - Mariapaola Marino
- Dipartimento di Medicina e Chirurgia Traslazionale, Sezione di Patologia Generale, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Fondazione Policlinico Universitario "A. Gemelli" IRCCS, 00168 Rome, Italy
| | - Umberto Basile
- Department of Clinical Pathology, Santa Maria Goretti Hospital, AUSL Latina, 04100 Latina, Italy
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James T, Afrouzian M, Truong L, Aleter O, Badalamenti J, Kassem H. Proliferative glomerulonephritis with monoclonal IgG deposits: a unique case with a clinical course of over 46 years. BMC Nephrol 2023; 24:109. [PMID: 37098508 PMCID: PMC10126991 DOI: 10.1186/s12882-023-03178-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 04/20/2023] [Indexed: 04/27/2023] Open
Abstract
BACKGROUND Proliferative glomerulonephritis with monoclonal IgG deposits (PGNMID) is a rare entity first described in 2004. We present a case of PGNMID with recurrent hematuria and nephrotic range proteinuria with three biopsies over 46 years. CASE PRESENTATION A 79-year-old Caucasian female presents with a history of two separate episodes of biopsy-proven recurrent GN over a course of 46 years. Both biopsies from 1974, and 1987 were reported as membranoproliferative GN (MPGN). The patient presented in 2016 for the third time with symptoms of fluid overload, slight worsening in renal function, and proteinuria along with glomerular hematuria. A third kidney biopsy was performed, and the final diagnosis was proliferative glomerulonephritis with monoclonal IgG/κ deposits. CONCLUSION With three renal biopsies obtained over 46 years, our case opens a unique window into the natural history of PGNMID. The three biopsies demonstrate the immunologic and morphologic evolution of PGNMID in the kidney.
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Affiliation(s)
- Tyler James
- School of Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Marjan Afrouzian
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, USA
| | - Luan Truong
- Department of Pathology, Methodist Hospital, Houston, TX, USA
| | | | - John Badalamenti
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA
| | - Hania Kassem
- Division of Nephrology and Hypertension, Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA.
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25
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Relapse of Monoclonal Gammopathy of Renal Significance after mRNA COVID-19 Vaccination: A Case Report. Life (Basel) 2023; 13:life13030734. [PMID: 36983889 PMCID: PMC10057448 DOI: 10.3390/life13030734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/04/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
This case report represents the first suspected case of light chain deposition disease relapse associated with mRNA COVID-19 vaccination. The 75-year-old female patient of Greek ethnicity was admitted to the clinic for the investigation of worsening renal function detected on routine lab examinations, two weeks after she received the second dose of the Moderna COVID-19 vaccine (mRNA-1273). Rapidly progressive glomerulonephritis and anemia were the most notable findings. She had a history of LCDD, which had remained stable for four years. Serum protein immunofixation showed monoclonal kappa zones, and a bone marrow biopsy revealed 5% plasma cell infiltration. These, along with other investigations, established the diagnosis of LCDD recurrence. The patient was started on chemotherapy, which improved her immunological profile, but not her renal function. The patient has remained on hemodialysis since. The association between mRNA vaccinations and LCDD relapse may be grounds for investigations into the pathophysiology of MGRS, given the patient’s previous long-term remission. This case report is not intended to directly inform changes in clinical practice. We must stress the importance of following all standardized vaccination protocols, especially in immunocompromised patients.
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26
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Karam S, Haidous M, Dalle IA, Dendooven A, Moukalled N, Van Craenenbroeck A, Bazarbachi A, Sprangers B. Monoclonal gammopathy of renal significance: Multidisciplinary approach to diagnosis and treatment. Crit Rev Oncol Hematol 2023; 183:103926. [PMID: 36736510 DOI: 10.1016/j.critrevonc.2023.103926] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 01/13/2023] [Accepted: 01/20/2023] [Indexed: 02/05/2023] Open
Abstract
Monoclonal gammopathy of renal significance (MGRS) is a hemato-nephrological term referring to a heterogeneous group of kidney disorders characterized by direct or indirect kidney injury caused by a monoclonal immunoglobulin (MIg) produced by a B cell or plasma cell clone that does not meet current hematologic criteria for therapy. MGRS-associated kidney diseases are diverse and can result in the development of end stage kidney disease (ESKD). The diagnosis is typically made by nephrologists through a kidney biopsy. Many distinct pathologies have been identified and they are classified based on the site or composition of the deposited Mig, or according to histological and ultrastructural findings. Therapy is directed towards the identified underlying clonal population and treatment decisions should be coordinated between hematologists and nephrologists in a multidisciplinary fashion, depend on the type of MGRS, the degree of kidney function impairment and the risk of progression to ESKD.
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Affiliation(s)
- Sabine Karam
- Division of Nephrology and Hypertension, University of Minnesota, Minneapolis, MN, United States
| | - Mohammad Haidous
- Department of Medicine, Saint Vincent Charity Medical Center, Cleveland, OH, United States
| | - Iman Abou Dalle
- Bone Marrow Transplantation Program, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Amélie Dendooven
- Department of Pathology, University Hospital Ghent, Ghent, Belgium
| | - Nour Moukalled
- Bone Marrow Transplantation Program, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Amaryllis Van Craenenbroeck
- Department of Microbiology, Immunology and Transplantation, Laboratory of Nephrology, KU Leuven, Leuven, Belgium; Division of Nephrology, University Hospitals Leuven, Leuven, Belgium
| | - Ali Bazarbachi
- Bone Marrow Transplantation Program, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon; Department of Anatomy, Cell Biology and Physiological Sciences, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ben Sprangers
- Biomedical Research Institute, Department of Immunology and Infection, University Hasselt, Diepenbeek, Belgium; Department of Nephrology, Ziekenhuis Oost-Limburg, Genk, Belgium.
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27
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Pathological characteristics of light chain crystalline podocytopathy. Kidney Int 2023; 103:616-626. [PMID: 36581019 DOI: 10.1016/j.kint.2022.11.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 12/28/2022]
Abstract
Monoclonal immunoglobulin light chain (LC) crystalline inclusions within podocytes are rare, poorly characterized entities. To provide more insight, we now present the first clinicopathologic series of LC crystalline podocytopathy (LCCP) encompassing 25 patients (68% male, median age 56 years). Most (80%) patients presented with proteinuria and chronic kidney disease, with nephrotic syndrome in 28%. Crystalline keratopathy and Fanconi syndrome were present in 22% and 10%, respectively. The hematologic condition was monoclonal gammopathy of renal significance (MGRS) in 55% and multiple myeloma in 45%. The serum monoclonal immunoglobulin was IgG κappa in 86%. Histologically, 60% exhibited focal segmental glomerulosclerosis (FSGS), often collapsing. Ultrastructurally, podocyte LC crystals were numerous with variable effacement of foot processes. Crystals were also present in proximal tubular cells as light chain proximal tubulopathy (LCPT) in 80% and in interstitial histiocytes in 36%. Significantly, frozen-section immunofluorescence failed to reveal the LC composition of crystals in 88%, requiring paraffin-immunofluorescence or immunohistochemistry, with identification of kappa LC in 87%. The LC variable region gene segment, determined by mass spectrometry of glomeruli or bone marrow plasma cell sequencing, was IGKV1-33 in four and IGKV3-20 in one. Among 21 patients who received anti-plasma cell-directed chemotherapy, 50% achieved a kidney response, which depended on a deep hematologic response. After a median follow-up of 36 months, 26% progressed to kidney failure and 17% died. The mean kidney failure-free survival was 57.6 months and was worse in those with FSGS. In sum, LCCP is rare, mostly associates with IgG κappa MGRS, and frequently has concurrent LCPT, although Fanconi syndrome is uncommon. Paraffin-immunofluorescence and electron microscopy are essential to prevent misdiagnosis as primary FSGS since kidney survival depends on early diagnosis and subsequent clone-directed therapy.
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28
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Gudapati P, Al-Sultani A, Parmar A, Motwani R, Fortkort P. Rhabdomyolysis and Acute Renal Dysfunction as Initial Manifestations of Monoclonal Gammopathy of Renal Significance. Cureus 2023; 15:e34759. [PMID: 36909104 PMCID: PMC9999247 DOI: 10.7759/cureus.34759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2023] [Indexed: 02/10/2023] Open
Abstract
Monoclonal gammopathy of renal significance (MGRS) is a rare heterogeneous group of kidney disorders that encompasses all disorders caused by deposition of monoclonal protein (M-protein) and its light or heavy chain fragments secreted by pre-malignant or non-malignant B-cell clones in patients who do not meet the diagnostic criteria for multiple myeloma (MM) or other B-cell malignancies. MGRS can manifest as glomerular diseases, tubulopathies, or vascular involvement with varying clinical presentations, making the diagnosis of MGRS challenging. In patients with high clinical suspicion based on preliminary blood and urine studies, the evaluation of MGRS begins with a renal biopsy followed by monoclonal studies and cytogenetic analysis. There is no standard treatment protocol for MGRS, and the current consensus suggests a clone-directed approach. If not identified and treated early, MGRS often results in poor outcomes and can lead to extrarenal manifestations, such as cardiogenic shock. Herein, we present a case involving a 43-year-old male with a rare presentation of rhabdomyolysis, rapidly progressing renal dysfunction, and cardiac dysfunction. A bone marrow biopsy did not meet the diagnostic criteria for MM or other B-cell malignancies, while a renal biopsy revealed Kappa light chain cast nephropathy, which led to the final diagnosis of MGRS.
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Affiliation(s)
- Prathyusha Gudapati
- Internal Medicine, UNC Health Southeastern, Lumberton, USA.,Internal Medicine, Campbell University School of Osteopathic Medicine, Buis Creek, USA
| | - Anmar Al-Sultani
- Internal Medicine, UNC Health Southeastern, Lumberton, USA.,Internal Medicine, Campbell University School of Osteopathic Medicine, Buis Creek, USA
| | - Ashish Parmar
- Internal Medicine, UNC Health Southeastern, Lumberton, USA.,Internal Medicine, Campbell University School of Osteopathic Medicine, Buis Creek, USA
| | - Reena Motwani
- Internal Medicine, UNC Health Southeastern, Lumberton, USA.,Internal Medicine, Campbell University School of Osteopathic Medicine, Buis Creek, USA
| | - Peter Fortkort
- Internal Medicine, UNC Health Southeastern, Lumberton, USA
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29
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Muacevic A, Adler JR, Basu D, PS P, Dubashi B. Clinicopathological Profile of Paraprotein-Associated Kidney Disease in Monoclonal Gammopathies: An Observational Study. Cureus 2022; 14:e32929. [PMID: 36699747 PMCID: PMC9872964 DOI: 10.7759/cureus.32929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/25/2022] [Indexed: 12/26/2022] Open
Abstract
Background Renal involvement in monoclonal gammopathies presents with different clinico-morphological patterns and can manifest at the onset or the late phase of hematological disease, or after chemotherapy. The spectrum is ever-expanding with advancements in diagnostic methods. Renal biopsy is needed for accurate diagnosis, as each of these patterns carries therapeutic and prognostic implications. Methods A total of 41 cases of monoclonal gammopathies were included in the study. Clinical, biochemical, and hematological details were obtained, and pathological variables were observed. Patients were followed till the maximum possible period, and treatment history and follow-up creatinine details were collected. Results The spectrum of renal biopsy lesions observed included light chain cast nephropathy (LCCN) n=19, amyloidosis n=11, monoclonal immunoglobulin deposition disease (MIDD) n=6, and proliferative glomerulonephritis with monoclonal immunoglobulin deposition (PGNMID) n=5; 10 of these cases can be categorized as monoclonal gammopathy of renal significance (MGRS). Acute kidney injury (AKI) (41%) is the predominant clinical presentation in general whereas the majority of amyloidosis cases presented with nephrotic and sub-nephrotic proteinuria. LCCN cases had high serum creatinine and calcium, positivity for M-spike, as well as a high FLC ratio, compared to the other types. Around 100% of LCCN and MIDD patients had myeloma and 100% of PGNMID cases had normal marrow. Conclusion More than three-fourths of patients were diagnosed with monoclonal gammopathies with biochemical and hematological workups after an initial kidney biopsy. The clinicopathological profile of these patients had a broad spectrum but there were still some consistent findings within the different types. A subgroup of patients (MGRS) had undetectable serum paraproteins but had monoclonal immunoglobulin deposition in the kidney.
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30
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Monoclonal Gammopathies of Clinical Significance: A Critical Appraisal. Cancers (Basel) 2022; 14:cancers14215247. [PMID: 36358666 PMCID: PMC9659226 DOI: 10.3390/cancers14215247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/15/2022] [Accepted: 10/24/2022] [Indexed: 11/26/2022] Open
Abstract
Simple Summary Monoclonal gammopathy of clinical significance (MGCS) refers to a recently coined term describing a complex and heterogeneous group of nonmalignant monoclonal gammopathies. These patients are characterized by the presence of a commonly small clone and the occurrence of symptoms that may be associated with the clone or with the monoclonal protein through diverse mechanisms. This is an evolving, challenging, and rapidly changing field. Patients are classified according to the key organ or system involved, with kidneys, skin, nerves, and eyes being the most frequently affected. However, multiorgan involvement may be the most relevant clinical feature at the presentation or during the course. This review delves into the definition, history, differential diagnosis, classification, prognosis, and treatment of this group of entities by analyzing the evidence accumulated to date from a critical perspective. Abstract Monoclonal gammopathies of clinical significance (MGCSs) represent a group of diseases featuring the association of a nonmalignant B cells or plasma cells clone, the production of an M-protein, and singularly, the existence of organ damage. They present a current framework that is difficult to approach from a practical clinical perspective. Several points should be addressed in order to move further toward a better understanding. Overall, these entities are only partially included in the international classifications of diseases. Its definition and classification remain ambiguous. Remarkably, its real incidence is unknown, provided that a diagnostic biopsy is mandatory in most cases. In fact, amyloidosis AL is the final diagnosis in a large percentage of patients with renal significance. On the other hand, many of these young entities are syndromes that are based on a dynamic set of diagnostic criteria, challenging a timely diagnosis. Moreover, a specific risk score for progression is lacking. Despite the key role of the clinical laboratory in the diagnosis and prognosis of these patients, information about laboratory biomarkers is limited. Besides, the evidence accumulated for many of these entities is scarce. Hence, national and international registries are stimulated. In particular, IgM MGCS deserves special attention. Until now, therapy is far from being standardized, and it should be planned on a risk and patient-adapted basis. Finally, a comprehensive and coordinated multidisciplinary approach is needed, and specific clinical trials are encouraged.
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31
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An Exceptional Case of Light Chain Only Variant of Proliferative Glomerulonephritis with Monoclonal Immunoglobulin Deposits Secondary to Chronic Lymphocytic Leukemia: A Case Report and Review of the Literature. Case Rep Nephrol 2022; 2022:9207282. [PMID: 36312462 PMCID: PMC9605840 DOI: 10.1155/2022/9207282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022] Open
Abstract
We present the case of an 86-year-old Caucasian male with an 11-year history of low-grade chronic lymphocytic leukemia (CLL) presenting with nephrotic syndrome (NS). Renal biopsy findings showed a diffuse mesangial and endocapillary proliferative glomerulonephritis (GN) lesion with fine granular deposits, consistent with a rare morphologic variant of proliferative glomerulonephritis with monoclonal immunoglobulin deposits (PGNMID)-lambda light chain (LC) only. Monthly combination therapy of rituximab (500 mg/m2 on day 1), fludarabine (30 mg/m2 on days 1–3), and cyclophosphamide (750 mg/m2 on days 1–3) was administered. Five courses of this regimen resulted in hematological remission, as well as a partial renal response with a reduction in the spot urine protein-to-creatinine ratio (UPCR) of 815.3 mg/g (reduction > 50% proteinuria without improvement in kidney function). This condition is a rare morphological variant of PGNMID, poorly described in CLL patients. We review the literature and suggest that this case provides sheds light on the unknown pathophysiological mechanisms of monoclonal immunoglobulins (MIg)-mediated glomerular damage in CLL patients, and may be helpful for the investigation of a more effective treatment.
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32
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Clinicopathologic characteristics and prognostic analysis of monoclonal gammopathy of renal significance (MGRS) in patients with IgM monoclonal gammopathy: a case series. Sci Rep 2022; 12:16994. [PMID: 36216844 PMCID: PMC9551084 DOI: 10.1038/s41598-022-21152-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 09/23/2022] [Indexed: 12/29/2022] Open
Abstract
Monoclonal gammopathy has emerged as an important cause of renal injury. Since the clinicopathologic features related to monotypic monoclonal gammopathy of renal significance with IgM monoclonal gammopathy (IgM-MGRS) are poorly described and it is uncertain if intervention improves renal survival and mortality, we report a series of such patients, characterizing their clinicopathologic spectrum and outcomes. We retrospectively analyzed 38 patients referred to one medical center between 2009 and 2019 with detectable serum monoclonal IgM by immunofixation, performance of a bone marrow biopsy and kidney biopsy-proven MGRS. Of the 38 patients identified, about half patients were amyloidosis, followed by cryoglobulinemic glomerulonephritis. Patients were divided into two groups on the basis of their kidney pathology: amyloid and non-amyloid. Patients with non-amyloidosis were more likely to have renal dysfunction, hematuria, anemia and hypocomplementemia and κ light chain was predominant in this sub-group. Amyloid patients were more often treated with chemotherapy than the non-amyloid patients (P = 0.002). There were no significant differences between amyloid and non-amyloid patients in mortality (48% vs 29%, P = 0.467) and incidence of ESRD (19% vs 59%, P = 0.103). The incidence of ESRD was lower in patients treated with chemotherapy and/or ASCT, compared to those without chemotherapy (25% vs 57%, P = 0.049), and it was also lower in the hematologic responders than non-responders (10% vs 40%, P = 0.047). Our study confirmed a diverse variety of clinicopathological features and outcomes in patients with IgM-MGRS. Chemotherapy and/or ASCT and deep hematologic responses might improve renal prognosis.
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33
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Nie G, Sun L, Zhang C, Yuan Y, Mao H, Wang Z, Li J, Duan S, Xing C, Zhang B. Clinicopathological features and individualized treatment of kidney involvement in B-cell lymphoproliferative disorder. Front Immunol 2022; 13:903315. [PMID: 36172352 PMCID: PMC9510618 DOI: 10.3389/fimmu.2022.903315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/22/2022] [Indexed: 11/20/2022] Open
Abstract
Background Due to the various clinical and pathological manifestations of kidney involvement in lymphoproliferative disorder (LPD), the whole spectrum of kidney disease in LPD is still unclear, and data on kidney prognosis is scarce. Methods We retrospectively reviewed the renal pathology profiles from January 2010 to December 2021, and 28 patients with B-cell LPD combined with intact renal biopsy data were included. Results There were 20 men and eight women aging 41 to 79 years at the time of renal biopsy (median age 62 years). According to hematological diagnosis, patients were classified into four groups: chronic lymphocytic leukemia (CLL) (group1, n=7), Waldenström macroglobulinemia/lymphoplasmacytic lymphoma (WM/LPL) (group 2, n=8; WM, n=6; LPL, n=2), Other non-Hodgkin’s lymphomas (NHL) (group3, n=7; diffuse large B-cell lymphoma (DLBCL), n=2; mucosa-associated lymphoid tissue (MALT) lymphoma, n=4; Low grade B-cell lymphoma, n=1), and monoclonal gammopathy of undetermined significance/monoclonal gammopathy of renal significance (MGUS/MGRS) (group 4, n=6). Median serum creatinine (Scr) level was 129 (range,59-956) umol/L. Eight patients (29%) were presented with acute kidney injury (AKI), and five patients (18%) required hemodialysis upon admission. Twenty-three patients (82%) presented with proteinuria (median protein excretion, 2.14 g/d), 11(39%) of whom had the nephrotic syndrome. Interstitial malignant infiltration was the most frequent renal lesion (n=6). Eight patients underwent immunohistochemistry of renal tissues, of which three patients (CLL, n=1; LPL, n=1; WM, n=1) had confirmed lymphoma infiltrates, and the infiltrating cells in the remaining five patients (CLL, n=1; MALT lymphoma, n=2; MGUS, n=2) were considered unrelated to lymphoma. The most common glomerular diseases were renal amyloidosis (n=4) and membranous nephropathy (n=4). Only 20 patients were treated, 13 of whom were treated with rituximab separately or in combination. The median follow-up time was 11 months. Of these, six had achieved hematological response, complete response in five cases. Eight had achieved renal response. At the end-of-study visit, four patients died and two progressed to end stage kidney disease (ESKD). Conclusion In conclusion, the clinicopathological spectrum of renal involvement in BLPD is diverse. Renal biopsy and immunohistochemistry are required for early diagnosis and prognostic assessment.
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Affiliation(s)
- Guangyan Nie
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - Lianqin Sun
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - Chengning Zhang
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - Yanggang Yuan
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - Huijuan Mao
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - Zhen Wang
- Department of Pathology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - Jianyong Li
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - Suyan Duan
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
- *Correspondence: Bo Zhang, ; Suyan Duan, ; Changying Xing,
| | - Changying Xing
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
- *Correspondence: Bo Zhang, ; Suyan Duan, ; Changying Xing,
| | - Bo Zhang
- Department of Nephrology, the First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
- Department of Nephrology, Pukou Branch of JiangSu Province Hospital (Nanjing Pukou Central Hospital), Nanjing, China
- *Correspondence: Bo Zhang, ; Suyan Duan, ; Changying Xing,
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Wang Y, Yan Y, Dong B, Zou W, Li X, Shao C, Jiang L, Wang M, Zuo L. Clinicopathological manifestations of coexistent monoclonal immunoglobulin deposition disease and immunotactoid glomerulopathy. Front Med (Lausanne) 2022; 9:911998. [PMID: 36091681 PMCID: PMC9452626 DOI: 10.3389/fmed.2022.911998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 07/29/2022] [Indexed: 11/13/2022] Open
Abstract
Combination of monoclonal immunoglobulin deposition disease (MIDD) and immunotactoid glomerulopathy (ITG) is a rare form of monoclonal immunoglobulin (MIg)-associated renal disease. We retrospectively reviewed the native kidney biopsy specimens at Peking University People’s Hospital from 2011 to 2020. Five patients were diagnosed as MIDD + ITG. Their clinical and pathological characteristics were studied. The typical clinical features were nephritic syndrome and renal dysfunction with prominent anemia, but hematuria was mild. Unlike single MIDD and single ITG, on light microscopy, segmentally distributed mesangial nodular sclerosis on the basis of mesangial matrix hyperplasia was the major lesion. Others including membranoproliferative glomerulonephritis (MPGN)-like lesion, glomerular basement membrane thickness, and mild to moderate mesangial and endothelial proliferations might presented at the same time and in the same glomeruli. On immunofluorescence, MIg, usually monoclonal light chains, deposited along glomerular basement membranes and tubular basement membranes, while the intact MIg or monoclonal heavy chain deposited in the mesangial regions. Corresponding to the depositions on immunofluorescence, punctate “powdery” deposits along glomerular basement membranes and tubular basement membranes under electronic microscopy indicated the presence of MIDD. Microtubular substructures (diameters of 20–50 nm) exhibiting hollow cores arranged in parallel arrays in mesangial regions indicated the presence of ITG. Patients treated with bortezomib-based regimen seemed to have better outcomes. In conclusion, MIDD + ITG is a rare combination form of MIg-associated renal disease. Accurate diagnosis requires the comprehensive pathological investigations.
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Affiliation(s)
- Yina Wang
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Yu Yan
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
- *Correspondence: Yu Yan,
| | - Bao Dong
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Wanzhong Zou
- Department of Pathology, Peking University Health Science Center, Beijing, China
| | - Xin Li
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Chunying Shao
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Lei Jiang
- Electron Microscope Laboratory, Peking University People’s Hospital, Beijing, China
| | - Mei Wang
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
| | - Li Zuo
- Department of Nephrology, Peking University People’s Hospital, Beijing, China
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Gutiérrez-Peredo GB, Filho JCBO, Montaño-Castellón I, Gutiérrez-Peredo AJ, Crusoé EDQ, Gusmao-Flores D. Lambda light chain-induced monoclonal gammopathy of renal significance, manifesting with Fanconi Syndrome and osteomalacia. BMC Nephrol 2022; 23:278. [PMID: 35945525 PMCID: PMC9364558 DOI: 10.1186/s12882-022-02901-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 07/29/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Monoclonal gammopathy of renal significance (MGRS) encompasses a heterogeneous group of kidney diseases in which a monoclonal immunoglobulin secreted by a clone of B cells or plasma cells causes kidney damage without meeting the hematological criteria for malignancy. Among the various forms of involvement, MGRS can manifest as a proximal tubule disorder, such as Fanconi syndrome (FS), characterized by urinary loss of phosphate, glucose, amino acids, uric acid and bicarbonate. Few cases of MGRS have been described in the literature, manifesting as FS and monoclonal production of lambda light chains, almost all of which are secondary to the production of kappa light chains. CASE PRESENTATION Here we report a clinical case of a 45-year-old Brazilian male, African descent, with proximal weakness of the lower limbs, whose initial assessment showed a urine summary with the presence of proteinuria and glycosuria without hyperglycemia, associated with mild worsening of renal function, hypouricemia, hypocalcemia and phosphaturia. Evolution was characterized by a MGRS manifesting as FS and osteomalacia. CONCLUSION The diagnosis of MGRS is not always easy, it requires knowledge of the clinical characteristics, diagnostic criteria and prognosis of each case. Therefore, all possible efforts should be made for multidisciplinary diagnosis.
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Affiliation(s)
- Gabriel Brayan Gutiérrez-Peredo
- University Hospital Professor Edgard Santos, Salvador, Bahia, CEP: 40110-060, Brazil. .,Programa de Pós-Graduação em Medicina e Saúde, Universidade Federal da Bahia, Salvador, Brazil. .,Gerência de Ensino, Pesquisa e Extensão - GEPE, University Hospital Professor Edgard Santos, Salvador, Brazil. .,Nephrology Service, University Hospital Professor Edgard Santos, Salvador, Brazil.
| | - José César Batista Oliveira Filho
- University Hospital Professor Edgard Santos, Salvador, Bahia, CEP: 40110-060, Brazil.,Nephrology Service, University Hospital Professor Edgard Santos, Salvador, Brazil
| | - Iris Montaño-Castellón
- University Hospital Professor Edgard Santos, Salvador, Bahia, CEP: 40110-060, Brazil.,Programa de Pós-Graduação em Medicina e Saúde, Universidade Federal da Bahia, Salvador, Brazil.,Gerência de Ensino, Pesquisa e Extensão - GEPE, University Hospital Professor Edgard Santos, Salvador, Brazil.,Neurology Service, University Hospital Professor Edgard Santos, Salvador, Brazil
| | - Andrea Jimena Gutiérrez-Peredo
- University Hospital Professor Edgard Santos, Salvador, Bahia, CEP: 40110-060, Brazil.,Programa de Pós-Graduação em Medicina e Saúde, Universidade Federal da Bahia, Salvador, Brazil.,Gerência de Ensino, Pesquisa e Extensão - GEPE, University Hospital Professor Edgard Santos, Salvador, Brazil
| | - Edvan de Queiroz Crusoé
- University Hospital Professor Edgard Santos, Salvador, Bahia, CEP: 40110-060, Brazil.,Onco-Hematology Service, University Hospital Professor Edgard Santos, Salvador, Brazil
| | - Dimitri Gusmao-Flores
- University Hospital Professor Edgard Santos, Salvador, Bahia, CEP: 40110-060, Brazil.,Programa de Pós-Graduação em Medicina e Saúde, Universidade Federal da Bahia, Salvador, Brazil
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Heavy Chain/Light Chain Antibody Immunofluorescence to Identify Monoclonal Plasma Cells in a Case of Plasma Cell-Rich Acute Interstitial Nephritis. Kidney Med 2022; 4:100514. [PMID: 35879978 PMCID: PMC9307939 DOI: 10.1016/j.xkme.2022.100514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Heavy/light chain (HLC) antibodies can be used to quantify intact HLC pairs. In immunofluorescence studies, they allow differentiation of monoclonal versus polyclonal immunoglobulin deposits in kidney diseases that occur in the setting of monoclonal gammopathy. Here, we present a case of a patient with acute kidney injury with first kidney biopsy suggestive of acute interstitial nephritis with a polymorphous infiltrate of plasma cells. Routine immunofluorescence did not show a monotypic plasma cell infiltrate. Serum protein electrophoresis and immunofixation revealed monoclonal immunoglobulin A (IgA) lambda. She improved with steroid therapy, but kidney function worsened after steroids were stopped. She underwent a second kidney biopsy, which showed plasma cell-rich interstitial infiltrate with a population of IgA lambda-restricted plasma cells on routine immunofluorescence. In light of this finding, Hevylite HLC antibody was used to reassess the first biopsy, which confirmed the presence of a population of plasma cells with IgA lambda restriction. Because of the presence of monotypic plasma cells, anti-CD38 monoclonal antibody (daratumumab) was initiated.
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37
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Zhou H, Li M, Zeng C, Chen Z, Zhang T, Cheng Z. Efficacy of Immunomodulatory Drugs in Combination With Dexamethasone in Proliferative Glomerulonephritis With Monoclonal Immunoglobulin Deposits. Kidney Int Rep 2022; 7:2166-2175. [PMID: 36217516 PMCID: PMC9546741 DOI: 10.1016/j.ekir.2022.07.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 06/16/2022] [Accepted: 07/11/2022] [Indexed: 10/25/2022] Open
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The 5th edition of the World Health Organization Classification of Haematolymphoid Tumours: Lymphoid Neoplasms. Leukemia 2022; 36:1720-1748. [PMID: 35732829 PMCID: PMC9214472 DOI: 10.1038/s41375-022-01620-2] [Citation(s) in RCA: 1119] [Impact Index Per Article: 559.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 05/17/2022] [Accepted: 05/26/2022] [Indexed: 02/05/2023]
Abstract
We herein present an overview of the upcoming 5th edition of the World Health Organization Classification of Haematolymphoid Tumours focussing on lymphoid neoplasms. Myeloid and histiocytic neoplasms will be presented in a separate accompanying article. Besides listing the entities of the classification, we highlight and explain changes from the revised 4th edition. These include reorganization of entities by a hierarchical system as is adopted throughout the 5th edition of the WHO classification of tumours of all organ systems, modification of nomenclature for some entities, revision of diagnostic criteria or subtypes, deletion of certain entities, and introduction of new entities, as well as inclusion of tumour-like lesions, mesenchymal lesions specific to lymph node and spleen, and germline predisposition syndromes associated with the lymphoid neoplasms.
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Vanjarapu JMR, Iglesias J, Ahmed R, Singh P, Gerbino G, Stokes MB. Proliferative Glomerulonephritis With Monotypic Immunoglobulin Deposits: An Unusual Presentation in the Setting of Multiple Inciting Events Including COVID-19 Vaccination. Cureus 2022; 14:e25949. [PMID: 35855226 PMCID: PMC9284472 DOI: 10.7759/cureus.25949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2022] [Indexed: 11/09/2022] Open
Abstract
Proliferative glomerulonephritis with monoclonal immunoglobulin (mIg) deposits (PGNMID) is a rare glomerular disease characterized by glomerular deposits of mIg. The pathogenesis of PGNMID without circulating mIg is poorly understood but a role for aberrant immune response to infection or another exogenous stimulus has been proposed. We describe a unique case of PGNMID that presented with multiple episodes of acute kidney injury, nephritic syndrome, and hypocomplementemia, associated with self-limited febrile illnesses or COVID-19 vaccination. Monoclonal IgG lambda was detected in the serum and urine, consistent with monoclonal gammopathy of renal significance (MGRS). Consecutive kidney biopsies demonstrated evolving morphologic and immunohistologic features, with monotypic IgG lambda deposits identified only in the third biopsy. Despite the need for dialysis, renal dysfunction and hypocomplementemia resolved after each episode with corticosteroid therapy. This case illustrates infections or COVID vaccination maybe “second hits” that promote mIg deposition in PGNMID, possibly due to cytokine release by innate immune cells that promote endothelial cell injury.
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40
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A Case Report of Premalignant Plasma Cell Dyscrasia-Induced Renal Failure in a 31-Year-Old Female. Case Rep Hematol 2022; 2022:2497380. [PMID: 35711966 PMCID: PMC9197607 DOI: 10.1155/2022/2497380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/24/2022] [Indexed: 01/14/2023] Open
Abstract
Monoclonal gammopathy of renal significance (MGRS) is a rare disorder in which monoclonal immunoglobulin secreted by nonmalignant B cell or plasma cell clone causes kidney damage. Although MGRS is a premalignant condition, it can cause severe kidney disease and end-stage renal disease (ESRD) at any age. Herein, we present a 31-year-old female with past medical history of lupus nephritis who presented with signs of volume overload and worsening renal function despite adequate immunosuppressive therapy. Renal biopsy revealed heavy and light chain deposition consistent with MGRS. This case report demonstrates the importance of including MGRS in the differential diagnosis of worsening renal function despite adequate treatment, raising awareness of this premalignant yet morbid condition.
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Javaugue V, Valeri AM, Sathick IJ, Said SM, Damgard SE, Murray DL, Klobucher T, Andeen NK, Sethi S, Fervenza FC, Leung N, Nasr SH. The characteristics of seronegative and seropositive non-hepatitis-associated cryoglobulinemic glomerulonephritis. Kidney Int 2022; 102:382-394. [PMID: 35513122 DOI: 10.1016/j.kint.2022.03.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/15/2022] [Accepted: 03/30/2022] [Indexed: 12/14/2022]
Abstract
cryoglobulinemic glomerulonephritis (CryoGN) are not well-defined and cases with undetectable serum cryoglobulin (seronegative CryoGN) have not been investigated. Corresponding author: To resolve this, we retrospectively identified 81 patients with biopsy-proven non-hepatitis CryoGN, including 22 with seronegative CryoGN. The median age was 61 years and 76% presented with nephritic syndrome. A hematologic condition was found in 89% of patients, including monoclonal gammopathy of renal significance (65%) and symptomatic lymphoproliferative disorder (35%). In the seropositive group, 56% had type II, 29% type I, 8% type III cryoglobulin. Extrarenal manifestations, mostly of skin, were present in 64% and were significantly less common in seronegative CryoGN. Glomerular deposits by immunofluorescence were IgM dominant (84%) and polytypic (70%) in the seropositive group, whereas 52% of seronegative cases had monotypic deposits (i.e., type I cryoglobulin). Ultrastructurally, the deposits were organized in 77% of cases. Substructure appearance significantly differed according to the type of CryoGN, forming most commonly short cylindrical structures in type II and other organized substructures in type I CryoGN. Most patients were treated with clone-directed therapy. On follow up (median 33 months), 77% had partial or complete remission, 10% reached kidney failure and 14% died. Predictors of kidney failure on univariate analysis were AKIN stage 3, positive rheumatoid factor and biclonal gammopathy at diagnosis. We conclude that most CryoGN cases (types I and II) are due to hematologic condition and are associated with favorable outcome after clone-directed therapy. Seronegative CryoGN accounts for about a quarter of cases and is mostly a kidney-limited disease. Thus, further investigations are needed to unravel the pathophysiology of seronegative CryoGN.
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Affiliation(s)
- Vincent Javaugue
- Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA; Department of Nephrology, Centre Hospitalier Universitaire, Université de Poitiers, Poitiers, France.
| | - Anthony M Valeri
- Division of Nephrology, Columbia University, College of Physicians and Surgeons, New York, NY, USA
| | - Insara Jaffer Sathick
- Department of Medicine, Renal Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Samar M Said
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - David L Murray
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Tyler Klobucher
- Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Nicole K Andeen
- Department of Pathology, Oregon Health & Science University, Portland, Oregon, USA
| | - Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Fernando C Fervenza
- Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Nelson Leung
- Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA; Hematology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Samih H Nasr
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.
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Sethi S, De Vriese AS, Fervenza FC. Acute glomerulonephritis. Lancet 2022; 399:1646-1663. [PMID: 35461559 DOI: 10.1016/s0140-6736(22)00461-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 02/10/2022] [Accepted: 02/28/2022] [Indexed: 12/12/2022]
Abstract
Glomerulonephritis is a heterogeneous group of disorders that present with a combination of haematuria, proteinuria, hypertension, and reduction in kidney function to a variable degree. Acute presentation with full blown nephritic syndrome or rapidly progressive glomerulonephritis is uncommon and is mainly restricted to patients with post-infectious glomerulonephritis, anti-neutrophil cytoplasmic antibodies-associated vasculitis, and anti-glomerular basement membrane disease. Most frequently, patients present with asymptomatic haematuria and proteinuria with or without reduced kidney function. All glomerulonephritis disorders can show periods of exacerbation, but disease flairs characteristically occur in patients with IgA nephropathy or C3 glomerulopathy. The gold standard for the diagnosis of a glomerulonephritis is a kidney biopsy, with a hallmark glomerular inflammation that translates into various histopathological patterns depending on the location and severity of the glomerular injury. Traditionally, glomerulonephritis was classified on the basis of the different histopathological patterns of injury. In the last few years, substantial progress has been made in unravelling the underlying causes and pathogenetic mechanisms of glomerulonephritis and a causal approach to the classification of glomerulonephritis is now favoured over a pattern-based approach. As such, glomerulonephritis can be broadly classified as immune-complex glomerulonephritis (including infection-related glomerulonephritis, IgA nephropathy, lupus nephritis, and cryoglobulinaemic glomerulonephritis), anti-neutrophil cytoplasmic antibodies-associated (pauci-immune) glomerulonephritis, anti-glomerular basement membrane glomerulonephritis, C3 glomerulopathy, and monoclonal immunoglobulin-associated glomerulonephritis. We provide an overview of the clinical presentation, pathology, and the current therapeutic approach of the main representative disorders in the spectrum of glomerulonephritis.
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Affiliation(s)
- Sanjeev Sethi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - An S De Vriese
- Division of Nephrology and Infectious Diseases, AZ Sint-Jan Brugge, Brugge, Belgium; Department of Internal Medicine, Ghent University, Ghent, Belgium
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Jung M, Lee H, Moon KC. Morphometric Analysis of Lysosomes in the Renal Tubule in Monoclonal Gammopathy Using Transmission Electron Microscopy: "Mottled Appearance" and Beyond. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-9. [PMID: 35437138 DOI: 10.1017/s1431927622000587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Lysosomal “mottled appearance”, or uneven electron-dense content related to monoclonal gammopathy (MG), has been mainly described in light chain proximal tubulopathy (LCPT). We aimed to determine the ultrastructural characteristics of lysosomal mottled appearance in kidney biopsies and its association with LCPT and MG. Seventy-seven biopsies were grouped into LCPT (n = 5), MG conditions other than LCPT (n = 43), and non-MG conditions (n = 29). The mottled lysosomes in the renal tubules were evaluated using transmission electron microscopy and morphometric analysis. Mottled lysosomes were more prevalent (% of present cases) and frequent (no. of mottled lysosomes/20,000× ultramicroscopic field) in the LCPT group (100% and 8.20 ± 4.15/field) than in the MG (41.9% and 1.13 ± 2.05/field) and non-MG (37.9% and 0.80 ± 1.44/field) groups. In morphometric analysis of all mottled lysosomes (n = 520) detected from the 34 biopsies (5 LCPT, 18 MG, and 11 non-MG), we found that mottled lysosomes were larger, more irregular, and more electron-dense for the LCPT group than for the MG and non-MG groups. Therefore, mottled lysosomes can be present in disorders other than LCPT or even without MG. The morphological characteristics of mottled lysosomes could provide objective guidance for the diagnosis of LCPT.
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Affiliation(s)
- Minsun Jung
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul03722, Republic of Korea
- Department of Pathology, Seoul National University College of Medicine, Seoul03080, Republic of Korea
| | - Hajeong Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul03080, Republic of Korea
- Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul03080, Republic of Korea
| | - Kyung Chul Moon
- Department of Pathology, Seoul National University College of Medicine, Seoul03080, Republic of Korea
- Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul03080, Republic of Korea
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Büttner-Herold M, Krieglstein N, Chuva T, Minuth K, Pfister F, Daniel C, Klewer M, Büttner A, Ferrazzi F, Bertz S, Amann K. Light Chain Restriction in Proximal Tubules-Implications for Light Chain Proximal Tubulopathy. Front Med (Lausanne) 2022; 9:723758. [PMID: 35419374 PMCID: PMC8995435 DOI: 10.3389/fmed.2022.723758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Monoclonal gammopathy (MG) causes various nephropathies, which may suffice for cytoreductive therapy even in the absence of diagnostic criteria for multiple myeloma or B-cell non-Hodgkin lymphoma. The aim of this study was to better understand the significance of light chain (LC) restriction or crystals (LC-R/C) in proximal tubules in the spectrum of LC-induced nephropathies. A consecutive cohort of 320 renal specimens with a history of B-cell dyscrasia was characterized. Special attention was paid to immunohistochemical LC restriction in proximal tubules, tubular crystals or constipation, and ultrastructural findings. Complementary cell culture experiments were performed to assess the role of LC concentrations in generating LC restriction. Light chain restriction or crystals in proximal tubules was found in a quarter of analyzed cases (81/316) and was associated with another LC-induced disease in 70.4% (57/81), especially LC cast-nephropathy (cast-NP) and interstitial myeloma infiltration. LC restriction without significant signs of acute tubular injury was observed in 11.1% (9/81). LC-R/C was not associated with inferior renal function compared to the remainder of cases, when cases with accompanying cast-NP were excluded. Besides crystals, cloudy lysosomes were significantly associated with LC-R/C on an ultrastructural level. In summary, LC-R/C is frequent and strongly associated with cast-NP, possibly indicating that a high load of clonal LC is responsible for this phenomenon, supported by the observation that LC restriction can artificially be generated in cell culture. This and the lack of significant tubular injury in a subgroup imply that in part LC-R/C is a tubular trafficking phenomenon rather than an independent disease process.
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Affiliation(s)
- Maike Büttner-Herold
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Nathalie Krieglstein
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Teresa Chuva
- Department of Nephrology, Portuguese Institute of Oncology, Porto, Portugal
| | - Kaija Minuth
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Frederick Pfister
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Christoph Daniel
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Monika Klewer
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Anke Büttner
- School of Psychology, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Fulvia Ferrazzi
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany.,Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Simone Bertz
- Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Kerstin Amann
- Department of Nephropathology, Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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45
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Barata R, Pereira TA, Carvalho D, Cardoso F, Moraes-Fontes MF, Fernandes C, Góis M, Viana H, Ribeiro F, Nolasco F. Revisiting Schnitzler syndrome: A rare severe form of acute kidney injury and monoclonal gammopathy. Nefrologia 2022. [DOI: 10.1016/j.nefro.2022.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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46
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Sy-Go JPT, Herrmann SM, Seshan SV. Monoclonal Gammopathy-Related Kidney Diseases. Adv Chronic Kidney Dis 2022; 29:86-102.e1. [PMID: 35817530 DOI: 10.1053/j.ackd.2022.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 12/09/2021] [Accepted: 01/18/2022] [Indexed: 11/11/2022]
Abstract
Monoclonal gammopathies occur secondary to a broad range of clonal B lymphocyte or plasma cell disorders, producing either whole or truncated monoclonal immunoglobulins. The kidneys are often affected by these monoclonal proteins, and, although not mutually exclusive, can involve the glomeruli, tubules, interstitium, and vasculature. The nephrotoxic potential of these monoclonal proteins is dependent on a variety of physicochemical characteristics that are responsible for the diverse clinicopathologic manifestations, including glomerular diseases with organized deposits, glomerular diseases with granular deposits, and other lesions, such as C3 glomerulopathy and thrombotic microangiopathy with unique pathophysiologic features. The diseases that involve primarily the tubulointerstitial and vascular compartments are light chain cast nephropathy, light chain proximal tubulopathy, crystal-storing histiocytosis, and crystalglobulin-induced nephropathy with distinct acute and chronic clinicopathologic features. The diagnosis of a monoclonal gammopathy-related kidney disease is established by identification of an underlying active or more commonly, low-grade hematologic malignancy, serologic evidence of a monoclonal gammopathy when detectable, and most importantly, monoclonal protein-induced pathologic lesions seen in a kidney biopsy, confirming the association with the monoclonal protein. Establishing a diagnosis may be challenging at times, particularly in the absence of an overt hematologic malignancy, with or without monoclonal gammopathy, such as proliferative glomerulonephritis with monoclonal immunoglobulin deposits. Overall, the treatment is directed against the underlying hematologic disorder and the potential source of the monoclonal protein.
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Affiliation(s)
| | - Sandra M Herrmann
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN.
| | - Surya V Seshan
- Department of Anatomic Pathology and Clinical Pathology, Weil Cornell Medical College, New York, NY
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47
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Eymieux S, Miquelestorena-Standley E, Rabot N, Maisons V, Touchard G, Blanchard E. Crystalline podocytopathy and tubulopathy linked to kappa light chain deposits in a context of smoldering multiple myeloma. Clin Kidney J 2022; 15:351-353. [PMID: 35145650 PMCID: PMC8824780 DOI: 10.1093/ckj/sfab197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Indexed: 11/18/2022] Open
Abstract
A 42-year-old man with smoldering immunoglobulin G kappa multiple myeloma showed a heavy proteinuria composed of free light chain, prompting performance of a kidney biopsy. Electron microscopy revealed numerous rhomboid-shaped crystals labelled by the anti-kappa in immunogold, notably in the cytoplasm of podocytes, establishing the diagnosis of crystalline podocytopathy. This case illustrates a rare form of monoclonal gammopathy of renal significance, and highlights the key role of electron microscopy and immunogold to better elucidate the location and composition of crystals.
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Affiliation(s)
- Sébastien Eymieux
- Unité de Biologie cellulaire et microscopie électronique, hôpital Bretonneau CHRU de Tours, Tours, France
| | | | | | - Valentin Maisons
- EA4245-Transplantation, Immunologie, Inflammation, Université de Tours, Tours, France
| | - Guy Touchard
- Service d'Anatomie et Cytologie Pathologiques, CHRU Poitiers, Poitiers, France
| | - Emmanuelle Blanchard
- Unité de Biologie cellulaire et microscopie électronique, hôpital Bretonneau CHRU de Tours, Tours, France
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48
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Hishida E, Kobayashi T, Ono Y, Oka K, Masuda T, Ueda Y, Akimoto T, Saito O, Nagata D. Tubulointerstitial nephritis in antineutrophil cytoplasmic antibody-associated vasculitis with monoclonal gammopathy. CEN Case Rep 2022; 11:36-42. [PMID: 34282535 PMCID: PMC8811071 DOI: 10.1007/s13730-021-00620-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/28/2021] [Indexed: 11/30/2022] Open
Abstract
Isolated tubulointerstitial nephritis (TIN) without glomerular crescent formation is a rare manifestation of antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Some patients with monoclonal gammopathy of undetermined significance present with renal complications due to serum monoclonal protein. Here, we present a case of TIN presumably attributable to AAV with monoclonal gammopathy. Laboratory data revealed acute kidney injury, elevated C-reactive protein (CRP) and ANCA titers, and elevated tubular injury markers. Renal biopsy revealed TIN with no apparent glomerular lesion. The findings of peritubular capillaritis and tubulitis indicated that AAV had contributed to the development of TIN. However, in situ hybridization for free light chains revealed kappa light chain restriction, indicating that the involvement of monoclonal gammopathy in the pathogenesis of TIN remains possible. The patient also developed ophthalmic neuropathy, probably caused by AAV. Oral prednisone (0.6 mg/kg/day) administration improved both the ocular symptoms and the laboratory parameters. Our case demonstrated that the concurrence of AAV and monoclonal gammopathy could pose a diagnostic dilemma in distinguishing the cause of TIN. Besides, some reports suggest an association between AAV and monoclonal gammopathy, although direct evidence is lacking. Further research is needed to establish this association.
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Affiliation(s)
- Erika Hishida
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takahisa Kobayashi
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yuko Ono
- Department of Pathology, Saitama Medical Center, Dokkyo Medical University, Koshigaya, Saitama, Japan
| | - Kentaro Oka
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Takahiro Masuda
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Yoshihiko Ueda
- Department of Pathology, Saitama Medical Center, Dokkyo Medical University, Koshigaya, Saitama, Japan
| | - Tetsu Akimoto
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Osamu Saito
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Daisuke Nagata
- Division of Nephrology, Department of Internal Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
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49
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Yamada S, Kanda H, Abe H, Domoto YS, Yoshida R, Harada H, Kubo K, Ushiku T, Fujio K. Predominant mesangial IgM, C3, and λ light chain depositions and interstitial nephritis in a patient with overlap syndrome and positivity for anti-mitochondrial M2 antibody: a case report. Mod Rheumatol Case Rep 2022; 6:124-127. [PMID: 34505626 DOI: 10.1093/mrcr/rxab017] [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: 05/19/2021] [Revised: 07/05/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
Overlap syndrome refers to a group of conditions that have clinical features of more than one well-characterised rheumatic disease and meet the respective classification criteria. There are no typical renal histological findings in overlap syndrome. When patients with overlap syndrome develop renal dysfunction, various potential causes, including lupus nephritis (LN), renal crisis by systemic sclerosis, interstitial nephritis, and so on, need to be distinguished. Here, we report a 44-year-old woman with overlap syndrome involving systemic lupus erythematosus (SLE), diffuse cutaneous systemic scleroderma, and Sjogren's syndrome, who was also positive for anti-mitochondrial M2 antibody. She developed glomerular haematuria, proteinuria, and increase in creatinine appeared gradually. Suspecting LN, renal biopsy was performed. However, in the interstitium, mild infiltration of lymphocytes and plasma cells and very partial fibrosis were observed. Immunofluorescence microscopy revealed predominant mesangial immunoglobulin M, C3, and λ light chain staining. Overall, LN was not diagnosed based on these findings. Renal dysfunction was normalised by glucocorticoid treatment for 3 months. This case suggests the importance of a renal diagnosis based on renal pathological findings, especially in a case of overlap syndrome including SLE.
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Affiliation(s)
- Saeko Yamada
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroko Kanda
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Immune-Mediated Diseases Therapy Center, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Abe
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yukako Shintani Domoto
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ryochi Yoshida
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroaki Harada
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kanae Kubo
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Medicine and Rheumatology, Tokyo Metropolitan Geriatric Hospital, Tokyo, Japan
| | - Tetsuo Ushiku
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keishi Fujio
- Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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50
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Li M, Xu G. An update of proliferative glomerulonephritis with monoclonal immunoglobulin deposits. Clin Kidney J 2021; 15:1041-1048. [PMID: 35664272 PMCID: PMC9155251 DOI: 10.1093/ckj/sfab269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 11/14/2022] Open
Abstract
Abstract
As aging increases, monoclonal gammopathy is becoming more common, and monoclonal gammopathy of renal significance (MGRS) is gaining attention due to frequent renal involvement. Among MGRS, proliferative glomerulonephritis with monoclonal immunoglobulin deposits (PGNMID) is a special category. The disease was first described in 2004, and the research history on it is relatively short. Compared with other MGRS, the detection rate of circulating clones is lower in patients with PGNMID, which is easy to be missed and misdiagnosed in clinical work. In this review, the etiology and clinical features of PGNMID are discussed. It is noted that PGNMID is not only associated with MGRS, but also with malignancy, infection, and other factors. PGNMID is not a disease exclusive to the elderly, young people can also develop this disease. Due to the low detection rate of circulating clones in most patients, confirmation of the disease needs to be combined with renal pathology, which emphasizes the importance of completing light and heavy chain subtype staining. Treatment options for patients with PGNMID differ by etiology. For MGRS-associated PGNMID, the current treatment is primarily empirical and more research evidence is needed to fill the treatment gap.
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Affiliation(s)
- Manna Li
- Department of Nephrology, the Second Affiliated Hospital of Nanchang University, China
| | - Gaosi Xu
- Department of Nephrology, the Second Affiliated Hospital of Nanchang University, China
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