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Wang X, Yu XJ, Wang SX, Zhou FD, Zhao MH. Light-chain proximal tubulopathy: a retrospective study from a single Chinese nephrology referral center. Ren Fail 2024; 46:2283587. [PMID: 38374684 PMCID: PMC10880565 DOI: 10.1080/0886022x.2023.2283587] [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: 08/28/2023] [Accepted: 11/09/2023] [Indexed: 02/21/2024] Open
Abstract
Background: Light-chain proximal tubulopathy (LCPT) is a rare disease characterized by the accumulation of monoclonal light chains within proximal tubular cells. This study aimed to investigate the clinical characteristics of LCPT from a single Chinese nephrology referral center.Methods: Patients with kidney biopsy-proven isolated LCPT between 2016 and 2022 at Peking University First Hospital were retrospectively included. Clinical data, kidney pathological type, treatment, and prognosis were analyzed.Results: Nineteen patients were enrolled, the mean age at diagnosis was 57 ± 11 and the sex ratio was 6/13 (female/male). Mean proteinuria was 2.44 ± 1.89 g/24 hr and the mean estimated glomerular filtration rate (eGFR) at the point of biopsy was 59.640 ± 27.449 ml/min/1.73 m2. κ-restriction (84%) was dominant among LCPTs. An abnormal free light chain ratio was observed in 86% of the patients. Proximal tubulopathy with cytoplasmic inclusions accounted for the majority (53%), followed by tubulopathy associated with interstitial inflammation reaction (26%), proximal tubulopathy without cytoplasmic inclusions (16%), and proximal tubulopathy with lysosomal indigestion/constipation (5%). One patient presented with acute kidney injury and 16 patients presented with chronic kidney disease. Regarding follow-up, patients received bortezomib-based or R-CHOP chemotherapy or supportive treatment only. The mean follow-up time was 22 ± 16 months, and the mean eGFR was 63.098 ± 27.439 ml/min/1.73 m2 at the end of follow-up. These patients showed improved or stable kidney function.Conclusions: This is the first case series report of LCPT in four different pathological types in northern China. Clone-targeted chemotherapy may help preserve the kidney function in these patients.
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Affiliation(s)
- Xin Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Renal Pathology Center, Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
| | - Xiao-juan Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Renal Pathology Center, Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of Immune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Su-xia Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Renal Pathology Center, Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of Immune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
- Laboratory of Electron Microscopy, Pathological Centre, Peking University First Hospital, Beijing, China
| | - Fu-de Zhou
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Renal Pathology Center, Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of Immune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
| | - Ming-hui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Beijing, China
- Institute of Nephrology, Peking University, Beijing, China
- Renal Pathology Center, Institute of Nephrology, Peking University, Beijing, China
- Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China
- Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
- Research Units of Diagnosis and Treatment of Immune-Mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China
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2
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Nasr SH, Sirac C, Leung N, Bridoux F. Monoclonal immunoglobulin crystalline nephropathies. Kidney Int 2024:S0085-2538(24)00319-3. [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] [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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3
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Zhang H, Zhang C, Su H. Concurrent Crystalline Light-Chain Proximal Tubulopathy and Membranous Nephropathy: A Case Report and Literature Review. Kidney Med 2024; 6:100816. [PMID: 38720788 PMCID: PMC11077163 DOI: 10.1016/j.xkme.2024.100816] [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] [Indexed: 05/12/2024] Open
Abstract
Light-chain proximal tubulopathy (LCPT) is typically characterized by the intracytoplasmic deposition of light chains within the proximal tubular epithelial cells, which is usually classified into crystalline and noncrystalline subgroups. Membranous nephropathy (MN) is a common glomerular disease characterized by diffused subepithelial electron-dense deposits along the capillary loop accompanied by the effacement and microvillus transformation of the foot process. Here, we report a biopsy-confirmed case of a concurrence of LCPT with crystals (κ light chains restricted) and antigen-undetermined MN in a male patient. The patient presented with low-molecular-weight proteinuria, increased serum creatinine levels, and incomplete Fanconi syndrome. To our knowledge, this is the first report of a concurrence of LCPT and independent MN of unknown target antigens, which may enrich our recognition of monoclonal gammopathy of renal significance with synchronous MN.
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Affiliation(s)
- Huizi Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
| | - Chunyun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
| | - Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
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4
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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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5
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Kousios A, Blakey S, Moran L, Atta M, Charif R, Duncan N, Smith A, Tam FWK, Levy JB, Chaidos A, Roufosse C. Non-crystalline light chain proximal tubulopathy, a morphologically protean entity. Nephrol Dial Transplant 2023; 38:2576-2588. [PMID: 37120733 PMCID: PMC10615624 DOI: 10.1093/ndt/gfad085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Indexed: 05/01/2023] Open
Abstract
BACKGROUND Light chain proximal tubulopathy (LCPT) is a rare form of paraprotein-related disease, occurring in two main histopathological forms: crystalline and non-crystalline. The clinicopathological features, treatment strategies and outcomes, especially of the non-crystalline form, are not well described. METHODS We conducted a single-centre retrospective case series of 12 LCPT patients, 5 crystalline and 7 non-crystalline, between 2005 and 2021. RESULTS The median age was 69.5 years (range 47-80). Ten patients presented with CKD and significant proteinuria (median estimated glomerular filtration rate of 43.5 ml/min/1.73 m2; urine protein:creatinine ratio 328 mg/mmol). Only six patients had known haematological disease at the time of renal biopsy. Multiple myeloma (MM) was diagnosed in seven patients cases and monoclonal gammopathy of renal significance (MGRS) in five patients. A clone was detected in all cases combining serum/urine electrophoresis and free light chain (LC) assays. Crystalline and non-crystalline variants had similar clinical presentations. For the non-crystalline variant, a diagnosis was reached based on a combination of CKD without another cause, haematological workup, LC restriction on immunofluorescence and abnormalities on electron microscopy (EM). Nine of 12 patients received clone-directed treatment. Patients who achieved haematological response (including all non-crystalline LCPT) had improved renal outcomes over a median follow-up of 79 months. CONCLUSIONS The non-crystalline variant may go unrecognised because of its subtle histopathological features and requires EM to distinguish it from 'excessive LC resorption without tubular injury'. Clone-directed treatment with good haematological response improves renal outcomes in both variants but limited data exist in MGRS. Multicentre prospective studies are needed to better define the clinicopathological characteristics associated with poor outcomes and optimize treatment strategies in patients with MGRS.
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Affiliation(s)
- Andreas Kousios
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
- West London Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Sarah Blakey
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
- West London Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Linda Moran
- North West London Pathology, Charing Cross Hospital, London, UK
| | - Maria Atta
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Rawya Charif
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
| | - Neill Duncan
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
- West London Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Andrew Smith
- North West London Pathology, Charing Cross Hospital, London, UK
| | - Frederick W K Tam
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
- West London Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Jeremy B Levy
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
- West London Renal and Transplant Centre, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Aristeidis Chaidos
- Department of Haematology, Hammersmith Hospital, Imperial College Healthcare NHS Trust, London, UK
- Hugh and Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, UK
| | - Candice Roufosse
- Imperial College, Centre for Inflammatory Disease, Dept Immunology and Inflammation, Faculty of Medicine, London, UK
- North West London Pathology, Charing Cross Hospital, London, UK
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6
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Katsuma A, Okabe M, Ueda H, Ehara T, Yamaguchi Y, Miyazaki Y, Yokoo T. Histiocytic Glomerulopathy With Noncrystalline Inclusion Associated With IgG-Kappa Plasma Cell Dyscrasia. Kidney Med 2023; 5:100617. [PMID: 36942309 PMCID: PMC10024131 DOI: 10.1016/j.xkme.2023.100617] [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: 02/17/2023] Open
Abstract
The kidney pathology of monoclonal gammopathy of renal significance varies greatly. In this report, we present a woman in her 20s with nephrotic syndrome and monoclonal immunoglobulin G kappa (serum and urine) without diabetes. She had a family history of nephrotic syndrome as well as hematologic and connective tissue disorders. A kidney biopsy showed nodular glomerulosclerosis, with the glomerular capillary full of histiocytes, which were strongly positive for kappa, not lambda. Immunoelectron microscopy revealed that histiocytes had infiltrated the glomerular subendothelial space, and enlarged lysosomes of histiocytes contained kappa light chains, without apparent crystalline formation. Bone marrow examination was negative for malignancy; thus, we diagnosed this case as histiocytic glomerulopathy with noncrystalline inclusion associated with immunoglobulin G-kappa plasma cell dyscrasia. Hematologic treatment with bortezomib and daratumumab decreased her level of serum kappa chain and proteinuria. Two years after diagnosis, her kidney function remained normal, urinary protein level decreased to 1 g/d, and free light-chain ratio decreased to 3.1.
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Affiliation(s)
- Ai Katsuma
- Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
- Address for Correspondence: Ai Katsuma, MD, PhD, Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, 3-25-8, Nishi-Shimbashi, Minato-ku, Tokyo, Japan.
| | - Masahiro Okabe
- Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Hiroyuki Ueda
- Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Takashi Ehara
- Department of Histopathology, Shinshu University School of Medicine, Matsumoto, Japan
| | | | - Yoichi Miyazaki
- Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine, Jikei University School of Medicine, Tokyo, Japan
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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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8
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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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9
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Long Y, Aljamal AA, Bahmad HF, Yedla N, Herrera GA, Schwartz MA, Layka A. Multiple myeloma presenting as acute tubulointerstitial nephritis. AUTOPSY AND CASE REPORTS 2021; 11:e2021328. [PMID: 34604122 PMCID: PMC8478360 DOI: 10.4322/acr.2021.328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 08/09/2021] [Indexed: 11/23/2022] Open
Abstract
Background Acute tubulointerstitial nephritis (ATIN) is a very rare paraneoplastic manifestation in patients with multiple myeloma (MM). It is an uncommon pattern of renal disease in such patients. Case presentation We report a case of an 82-year-old male who was admitted with acute kidney injury. Renal biopsy showed typical findings of light chain-associated ATIN with scattered inflammatory cells in the interstitium and associated active tubulitis. No other common manifestations of MM were present at the time of presentation, including hypercalcemia, hyperuricemia, proteinuria, bone pain or lytic bone lesions. Subsequent immunoassays revealed significant serum lambda light chain burden and Bence Jones protein in urine. Immunofluorescence demonstrated linear tubular basement membranes with positive staining for lambda light chain (3+). Electron microscopy (EM) further showed interstitial edema and inflammation. All the aforementioned findings are consistent with ATIN and supported the diagnosis of MM. Conclusions In conclusion, light chain-associated ATIN should be considered in the differential diagnosis of acute interstitial nephritis. Henceforth, serum free light chains as well as serum and urine protein electrophoresis should be included in the workup of such patients.
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Affiliation(s)
- Ying Long
- Mount Sinai Medical Center, Department of Internal Medicine, Miami Beach, FL, USA
| | - Abed A Aljamal
- Mount Sinai Medical Center, Department of Internal Medicine, Miami Beach, FL, USA
| | - Hisham F Bahmad
- Mount Sinai Medical Center, Arkadi M. Rywlin M.D. Department of Pathology and Laboratory Medicine, Miami Beach, FL, USA
| | - Niharika Yedla
- Mount Sinai Medical Center, Department of Internal Medicine, Miami Beach, FL, USA
| | - Guillermo A Herrera
- Louisiana State University Health, Department of Pathology Shreveport, LA, USA
| | - Michael A Schwartz
- Mount Sinai Medical Center, Department of Internal Medicine, Division of Hematology and Oncology, Miami Beach, FL, USA
| | - Ayman Layka
- Mount Sinai Medical Center, Department of Internal Medicine, Division of Nephrology, Miami Beach, FL, USA
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10
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Ungari M, Ghiringhelli P, Marchi G, Fisogni S, Lavazza A, Molteni A, Malberti F, Bertoni R, Trombatore M, Ferrero G, Gusolfino MD, Varotti E, Tanzi G, Manotti L. Combined renal proximal tubulopathy and crystal storing histiocytosis in a patient with κ light chain multiple myeloma. Pathologica 2021; 113:285-293. [PMID: 34463673 DOI: 10.32074/1591-951x-154] [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: 06/19/2020] [Accepted: 07/13/2020] [Indexed: 11/30/2022] Open
Abstract
Multiple myeloma accounts for 10-15% of all hematologic malignancies, and 20% of deaths related to cancers of the blood and bone marrow. Diagnosis is defined by the presence of a serum monoclonal spike (M-spike) of more than 3 g/dL or more than 10% clonal plasma cells in the bone marrow and at least one myeloma-defining event, such as hypercalcemia, anemia, bone lesions, or renal impairment. The kidney is a major target organ, and renal impairment is frequently the first manifestation of the disease. Renal damage occurs in up to 40% of patients and 10-20% will require dialysis. Monoclonal immunoglobulin light chains are the major causes of renal complications in multiple myeloma. Glomerular disease, with the deposition of monoclonal immunoglobulins or their components, includes monoclonal immunoglobulin deposition disease, AL or AH amyloidosis, type I cryoglobulinemia, proliferative glomerulonephritis with monoclonal IgG deposits, immunotactoid glomerulopathy, and fibrillary glomerulonephritis. In addition, tubulointerstitial diseases with the deposition of monoclonal immunoglobulins or their components, are constituted by light chain cast nephropathy, light chain proximal tubulopathy, and crystal-storing histiocytosis. We report the case of a 66-year-old woman who presented with albumin-predominant moderate proteinuria and renal failure. Serum and urine immunofixation electrophoresis showed monoclonal κ light chain in both. Renal biopsy confirmed κ-restricted crystal-storing renal disease involving proximal tubular epithelial cells and crystal storing histiocytosis. Multiple myeloma with crystal storing histiocytosis was discovered in bone marrow biopsy. Thus, we present an unusual case of a myeloma patient presenting light chain proximal tubulopathy and crystal-storing histiocytosis both in the kidney and in the bone marrow.
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Affiliation(s)
| | | | | | | | - Antonio Lavazza
- Virology Unit of IZSLER, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia- Romagna, Brescia, Italy
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11
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Menè P, Moioli A, Stoppacciaro A, Lai S, Festuccia F. Acute Kidney Injury in Monoclonal Gammopathies. J Clin Med 2021; 10:jcm10173871. [PMID: 34501317 PMCID: PMC8432219 DOI: 10.3390/jcm10173871] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 01/07/2023] Open
Abstract
Monoclonal gammopathies (MG) encompass a variety of disorders related to clonal expansion and/or malignant transformation of B lymphocytes. Deposition of free immunoglobulin (Ig) components (light or heavy chains, LC/HC) within the kidney during MG may result over time in multiple types and degrees of injury, including acute kidney injury (AKI). AKI is generally a consequence of tubular obstruction by luminal aggregates of LC, a pattern known as “cast nephropathy”. Monoclonal Ig LC can also be found as intracellular crystals in glomerular podocytes or proximal tubular cells. Proliferative glomerulonephritis with monoclonal Ig deposits is another, less frequent form of kidney injury with a sizable impact on renal function. Hypercalcemia (in turn related to bone reabsorption triggered by proliferating plasmacytoid B cells) may lead to AKI via functional mechanisms. Pharmacologic treatment of MG may also result in additional renal injury due to local toxicity or the tumor lysis syndrome. The present review focuses on AKI complicating MG, evaluating predictors, risk factors, mechanisms of damage, prognosis, and options for treatment.
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Affiliation(s)
- Paolo Menè
- Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, 00189 Rome, Italy
- Division of Nephrology, Sant’Andrea University Hospital, Via di Grottarossa 1035-1039, 00189 Rome, Italy; (A.M.); (F.F.)
- Correspondence: ; Tel.: +39-(06)-3377-5949
| | - Alessandra Moioli
- Division of Nephrology, Sant’Andrea University Hospital, Via di Grottarossa 1035-1039, 00189 Rome, Italy; (A.M.); (F.F.)
| | - Antonella Stoppacciaro
- Division of Pathology, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, 00189 Rome, Italy;
| | - Silvia Lai
- Division of Nephrology, Department of Translational and Precision Medicine, “Sapienza” University of Rome, 00161 Rome, Italy;
| | - Francescaromana Festuccia
- Division of Nephrology, Sant’Andrea University Hospital, Via di Grottarossa 1035-1039, 00189 Rome, Italy; (A.M.); (F.F.)
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12
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Li JP, Du YT, Li S, Rao XR. Monoclonal Gammopathy of Renal Significance (MGRS): Prospects for Treatment in Integrated Chinese and Western Medicine. Chin J Integr Med 2021; 27:643-648. [PMID: 34105098 DOI: 10.1007/s11655-021-3446-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2021] [Indexed: 01/02/2023]
Abstract
Monoclonal gammopathy of renal significance (MGRS) is a pathological state which presents with a spectrum of renal lesions. MGRS is characterized by pathogenic monoclonal immunoglobulins or light chains produced by a premalignant plasma cell or B cell clone. In view of inadequate understanding in the past, the low detection rate of MGRS often results in poor outcomes and reduces quality of life of patients. Thus, MGRS stands for a group of clinical refractory renal diseases. To date, no standard treatment strategy for MGRS is available. Current consensus suggests a clone-directed approach that aims to eradicate the offending clone, but its long-term prognosis is not clear. In this article, we discuss the diagnostic methods, highlight treatment advances, and introduce integrated Chinese and Western medicine in the management of MGRS.
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Affiliation(s)
- Jin-Pu Li
- Department of Nephrology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Ya-Ting Du
- Department of Nephrology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Shen Li
- Department of Nephrology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China
| | - Xiang-Rong Rao
- Department of Nephrology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 100053, China.
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13
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Sirac C, Batuman V, Sanders PW. The Proximal Tubule Toxicity of Immunoglobulin Light Chains. Kidney Int Rep 2021; 6:1225-1231. [PMID: 34013100 PMCID: PMC8116766 DOI: 10.1016/j.ekir.2021.02.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/11/2021] [Accepted: 02/15/2021] [Indexed: 01/25/2023] Open
Abstract
Plasma and B cells dyscrasias that overproduce monoclonal immunoglobulin free light chains (FLCs) affect the kidney frequently in various ways. The hematologic dyscrasia responsible for the production of FLCs may or may not meet the criteria for cancer, such as multiple myeloma (MM) or lymphoma, or may remain subclinical. If there is overt malignancy, the accompanying kidney disorder is called myeloma- or lymphoma-associated. If the dyscrasia is subclinical, the associated kidney disorders are grouped as monoclonal gammopathy of renal significance. Glomeruli and tubules may both be involved. The proximal tubule disorders comprise a spectrum of interesting syndromes, which range in severity. This review focuses on the recent insights gained into the patterns and the mechanisms of proximal tubule toxicity of FLCs, including subtle transport disorders, such as proximal tubule acidosis, partial or complete Fanconi syndrome, or severe acute or chronic renal failure. Histologically, there may be crystal deposition in the proximal tubule cells, acute tubule injury, interstitial inflammation, fibrosis, and tubule atrophy. Specific structural alterations in the V domain of FLCs caused by somatic hypermutations are responsible for crystal formation as well as partial or complete Fanconi syndrome. Besides crystal formation, tubulointerstitial inflammation and proximal tubulopathy can be mediated by direct activation of inflammatory pathways through cytokines and Toll-like receptors due to cell stress responses induced by excessive FLC endocytosis into the proximal tubule cells. Therapy directed against the clonal source of the toxic light chain can prevent progression to more severe lesions and may help preserve kidney function.
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Affiliation(s)
- Christophe Sirac
- Unité Mixte de Recherche (UMR) 7276/Institut National de la Santé et de la Recherche Médicale (INSERM) U1262, Centre National de la Recherche Scientifique (CNRS), Université de Limoges, Limoges, France
- Centre National de l’Amylose AL et Autres Maladies par Dépôts d’Immunoglobulines Monoclonales, Centre Hospitalier Universitaire de Limoges, Limoges, France
| | - Vecihi Batuman
- John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Department of Veterans Affairs, Southeast Louisiana Veterans Health Care System, New Orleans, Louisiana, USA
| | - Paul W. Sanders
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Veterans Affairs, Birmingham Veterans Affairs Health Care System, Birmingham, Alabama, USA
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14
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The Clone Wars: Diagnosing and Treating Dysproteinemic Kidney Disease in the Modern Era. J Clin Med 2021; 10:jcm10081633. [PMID: 33921394 PMCID: PMC8069250 DOI: 10.3390/jcm10081633] [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: 03/04/2021] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 11/17/2022] Open
Abstract
Dysproteinemic kidney diseases are disorders that occur as the result of lymphoproliferative (B cell or plasma cell) disorders that cause kidney damage via production of nephrotoxic monoclonal immunoglobulins or their components. These monoclonal immunoglobulins have individual physiochemical characteristics that confer specific nephrotoxic properties. There has been increased recognition and revised characterization of these disorders in the last decade, and in some cases, there have been substantial advances in disease understanding and treatments, which has translated to improved patient outcomes. These disorders still present challenges to nephrologists and patients, since they are rare, and the field of hematology is rapidly changing with the introduction of novel testing and treatment strategies. In this review, we will discuss the clinical presentation, kidney biopsy features, hematologic characteristics and treatment of dysproteinemic kidney diseases.
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15
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Malhotra R, Guleria P, Barwad A, Pramanik R, Tandon N. A unique case of light chain (AL) amyloidosis masquerading as hypophosphatemic osteomalacia. Osteoporos Int 2021; 32:387-392. [PMID: 32910218 DOI: 10.1007/s00198-020-05622-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/01/2020] [Indexed: 01/22/2023]
Abstract
Light chain (AL) amyloidosis is the result of a clonal plasma cell disorder which causes organ damage by deposition of misfolded light chains. Kidney is a common site of amyloid deposition. Proteinuria, usually in nephrotic range and unexplained renal insufficiency are the main manifestations of renal injury. We report a unique case of renal involvement by AL amyloidosis masquerading as metabolic bone disease. 38 year old male patient presented with progressively increasing diffuse bony pains, low backache and proximal weakness of both lower limbs since two years. On investigation, he was detected to have hypophosphatemic osteomalacia due to renal phosphate loss which was fibroblast growth factor 23 (FGF23)- independent. He also had nephrotic range low molecular weight proteinuria. Renal biopsy to ascertain the aetiology revealed deposition of amyloid fibrils in the glomerular mesangium on electron microscopy. Its characterization by immunofluorescence (IF) was consistent with immunoglobulin light chain (AL) amyloidosis. In the absence of a demonstrable plasma cell clone on bone marrow biopsy, we made a diagnosis of monoclonal gammopathy of renal significance (MGRS). He was treated with chemotherapy following which there was symptomatic improvement and reduction in phosphaturia. This case describes a unique presentation of renal injury due to AL amyloidosis masquerading as hypophosphatemic osteomalacia. The aim of this report is to highlight that hypophosphatemia in adults is usually acquired and treatment of underlying etiology results in cure, unlike in children where genetic counseling and phosphate replacement is the mainstay of treatment.
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Affiliation(s)
- R Malhotra
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India.
| | - P Guleria
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - A Barwad
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - R Pramanik
- Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - N Tandon
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
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16
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Zhang PL, Liu ML. Extracellular vesicles mediate cellular interactions in renal diseases-Novel views of intercellular communications in the kidney. J Cell Physiol 2021; 236:5482-5494. [PMID: 33432614 DOI: 10.1002/jcp.30268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/23/2020] [Accepted: 12/26/2020] [Indexed: 12/28/2022]
Abstract
The kidney is a complicated and important internal organ receiving approximately 20% of the cardiac output and mediates numerous pathophysiologic actions. These include selectively filtering macromolecules of the blood, exquisite reclaimation of electrolyctes, urine concentration via an elegant osmotic mechanism, and excretion of an acid load. In addition, the renal tubules carry out secretory functions and produce hormones and cytokines. The kidney receives innervation and hormonal regulation. Therefore, dysfunction of the kidney leads to retention of metabolic waste products, and/or significant proteinuria and hematuria. In the past several decades, the role of extracellular vesicles (EVs) in intercellular communications, and the uptake of EVs by recipient cells through phagocytosis and endocytosis have been elucidated. The new knowledge on EVs expands over the classical mechanisms of cellular interaction, and may change our way of thinking of renal pathophysiology in the subcellular scale. Based on some ultrastructural discoveries in the kidney, this review will focus on the role of EVs in intercellular communications, their internalization by recipient cells, and their relationship to renal pathology.
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Affiliation(s)
- Ping L Zhang
- Division of Anatomic Pathology, Beaumont Laboratories, Beaumont Health, Royal Oak, Michigan, USA
| | - Ming-Lin Liu
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, USA
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17
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Howell DN, Herrera GA. Electron microscopy in renal pathology: overall applications and guidelines for tissue, collection, preparation, and stains. Ultrastruct Pathol 2020; 45:1-18. [PMID: 33320036 DOI: 10.1080/01913123.2020.1854407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Electron microscopy is a mainstay in the analysis of renal biopsies, where it is typically employed in a correlative fashion along with light and immunofluorescence microscopy. Despite the development of a growing armamentarium of molecular and biochemical analytic methods as well as new immunostains with a widening panel of immunoreactants, electron microscopy remains crucial to the diagnosis of a number of disorders involving the renal glomerulus, vasculature, and tubulointerstitial compartment. The number of renal biopsies continues to grow and the indications for these biopsies continue expanding together with our understanding of disease processes. Proper collection of biopsies and careful analysis of data emanating from diagnostic modalities, clinical information, imaging, gross and microscopic tissue analysis, including a wide range of ancillary studies, represent the essential paradigm for generating detailed diagnoses with clinical significance. This communication offers a guide to the pre-analytic and analytic process for renal biopsy examination, discusses diagnostic keys and pitfalls for an important category of renal diseases (immune complex disorders), and provides an introduction to a useful adjunct diagnostic method (ultrastructural immunolabeling). Renal pathologists should render expert diagnoses that guide patient management, provide prognostic information and lead to targeted new therapeutic interventions that are currently available.
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Affiliation(s)
- David N Howell
- Department of Pathology, Duke University and Durham Veterans Affairs Medical Centers, Durham, NC, USA
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18
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Zhang PL, Pancioli T, Li W, Kanaan HD. Electron microscopic findings can support multiple etiologies of nephrotoxicity in renal tubules. Ultrastruct Pathol 2020; 44:481-488. [PMID: 33131373 DOI: 10.1080/01913123.2020.1839152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Electron microscopy (EM) has been mainly used for identifying ultrastructural abnormalities such as fusion of foot processes and immune complex deposits in glomeruli. However, electron microscopic findings in renal tubules can provide either diagnostic evidence (unique finding) or supportive evidence (additional finding) for final diagnosis. Here we present multiple situations that EM can be used for drawing conclusions of various drug-associated nephrotoxicity. Multiple cases with drug-induced nephrotoxicity are reviewed, including clinical history, EM findings, and serum creatinine (sCr) levels, prior to renal biopsy and during follow-up. Two cases with nephrotoxicity by aminoglycoside antibiotics showed acute tubular injury with EM findings of myeloid bodies, characterized by laminated dense materials in lysosomes in both proximal and distal tubular epithelium (diagnostic evidence). Five cases of vancomycin associated nephrotoxicity presented with acute tubular injury and vancomycin casts in distal tubules, characterized by central laminated casts in the lumina of distal tubules (supportive evidence). Vedolizumab, a humanized monoclonal antibody used in treating Crohn's disease, can cause T-cell dominant acute interstitial nephritis, with EM revealing lymphocytic infiltration into tubules as tubulitis (supportive evidence). Four of Seven cases (5/8) cases had renal functional recovery upon follow-up check for sCr. EM findings of characteristic changes in renal tubules can be particularly useful as either diagnostic or supportive evidence, in correlation with clinical history and etiologies of nephrotoxicity. Therefore, EM should not only focus on glomerular changes, but renal tubular changes as well.
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Affiliation(s)
- Ping L Zhang
- Division of Anatomic Pathology, Department of Pathology, Beaumont Labs, Beaumont Health System , Royal Oak, MI, USA
| | - Timothy Pancioli
- Division of Anatomic Pathology, Department of Pathology, Beaumont Labs, Beaumont Health System , Royal Oak, MI, USA
| | - Wei Li
- Division of Anatomic Pathology, Department of Pathology, Beaumont Labs, Beaumont Health System , Royal Oak, MI, USA
| | - Hassan D Kanaan
- Division of Anatomic Pathology, Department of Pathology, Beaumont Labs, Beaumont Health System , Royal Oak, MI, USA
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19
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Affiliation(s)
- Guillermo A Herrera
- Professor and Chair Department of Pathology University of South Alabama College of Medicine Mobile,
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20
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Pathophysiology and management of monoclonal gammopathy of renal significance. Blood Adv 2020; 3:2409-2423. [PMID: 31409583 DOI: 10.1182/bloodadvances.2019031914] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 05/09/2019] [Indexed: 12/17/2022] Open
Abstract
Recent years have witnessed a rapid growth in our understanding of the pathogenic property of monoclonal proteins. It is evident that some of these small monoclonal proteins are capable of inducing end-organ damage as a result of their intrinsic physicochemical properties. Hence, an umbrella term, monoclonal gammopathy of clinical significance (MGCS), has been coined to include myriad conditions attributed to these pathogenic proteins. Because kidneys are the most commonly affected organ (but skin, peripheral nerves, and heart can also be involved), we discuss MGRS exclusively in this review. Mechanisms of renal damage may involve direct or indirect effects. Renal biopsy is mandatory and demonstration of monoclonal immunoglobulin in kidney, along with the corresponding immunoglobulin in serum or urine, is key to establish the diagnosis. Pitfalls exist at each diagnostic step, and a high degree of clinical suspicion is required to diagnose MGRS. Recognition of MGRS by hematologists and nephrologists is important, because timely clone-directed therapy improves renal outcomes. Autologous stem cell transplant may benefit selected patients.
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21
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Understanding Mesangial Pathobiology in AL-Amyloidosis and Monoclonal Ig Light Chain Deposition Disease. Kidney Int Rep 2020; 5:1870-1893. [PMID: 33163710 PMCID: PMC7609979 DOI: 10.1016/j.ekir.2020.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/06/2020] [Accepted: 07/14/2020] [Indexed: 02/07/2023] Open
Abstract
Patients with plasma cell dyscrasias produce free abnormal monoclonal Ig light chains that circulate in the blood stream. Some of them, termed glomerulopathic light chains, interact with the mesangial cells and trigger, in a manner dependent of their structural and physicochemical properties, a sequence of pathological events that results in either light chain–derived (AL) amyloidosis (AL-Am) or light chain deposition disease (LCDD). The mesangial cells play a key role in the pathogenesis of both diseases. The interaction with the pathogenic light chain elicits specific cellular processes, which include apoptosis, phenotype transformation, and secretion of extracellular matrix components and metalloproteinases. Monoclonal light chains associated with AL-Am but not those producing LCDD are avidly endocytosed by mesangial cells and delivered to the mature lysosomal compartment where amyloid fibrils are formed. Light chains from patients with LCDD exert their pathogenic signaling effect at the cell surface of mesangial cells. These events are generic mesangial responses to a variety of adverse stimuli, and they are similar to those characterizing other more frequent glomerulopathies responsible for many cases of end-stage renal disease. The pathophysiologic events that have been elucidated allow to propose future therapeutic approaches aimed at preventing, stopping, ameliorating, or reversing the adverse effects resulting from the interactions between glomerulopathic light chains and mesangium.
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Menè P, De Alexandris L, Moioli A, Raffa S, Stoppacciaro A. Monoclonal Gammopathies of Renal Significance: Renal Biopsy and Beyond. Cancers (Basel) 2020; 12:cancers12071741. [PMID: 32629844 PMCID: PMC7407125 DOI: 10.3390/cancers12071741] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/22/2020] [Accepted: 06/28/2020] [Indexed: 12/27/2022] Open
Abstract
Monoclonal Gammopathies of Renal Significance (MGRS) are a rather heterogeneous group of renal disorders caused by a circulating monoclonal (MC) immunoglobulin (Ig) component, often in the absence of multiple myeloma (MM) or another clinically relevant lymphoproliferative disorder. Nevertheless, substantial kidney damage could occur, despite the "benign" features of the bone-marrow biopsy. One example is renal amyloidosis, often linked to a small clone of plasma cells, without the invasive features of MM. However, patients with amyloidosis may present with a nephrotic syndrome and renal failure, eventually leading to end-stage kidney disease. At the same time, other organs, such as the heart and the liver, may be severely damaged by Ig light chains or amyloid deposits, occasionally resulting in fatal arrhythmias and/or organ failure. Acute kidney injury (AKI) may as well result from massive excretion of MC proteins, with deposition disease in glomeruli or renal tubules, not rarely obstructed by luminal aggregates, or "casts". Proliferative glomerulonephritis with monoclonal Ig deposits is another, less frequent clinical presentation of an MGRS. The present review deals with the implications of MGRS for renal function and prognosis, and the potential of tools, such as the renal biopsy, for assessing clinical risk and guiding therapy of the underlying condition.
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Affiliation(s)
- Paolo Menè
- Division of Nephrology, Sant’Andrea University Hospital, Via di Grottarossa 1035–1039, 00189 Rome, Italy
- Correspondence: ; Tel.: +39-(06)-3377-5949
| | - Lorenzo De Alexandris
- Divisions of Nephrology, General Pathology, and Pathology, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, 00189 Rome, Italy; (L.D.A.); (A.M.); (S.R.); (A.S.)
| | - Alessandra Moioli
- Divisions of Nephrology, General Pathology, and Pathology, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, 00189 Rome, Italy; (L.D.A.); (A.M.); (S.R.); (A.S.)
| | - Salvatore Raffa
- Divisions of Nephrology, General Pathology, and Pathology, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, 00189 Rome, Italy; (L.D.A.); (A.M.); (S.R.); (A.S.)
| | - Antonella Stoppacciaro
- Divisions of Nephrology, General Pathology, and Pathology, Department of Clinical and Molecular Medicine, “Sapienza” University of Rome, 00189 Rome, Italy; (L.D.A.); (A.M.); (S.R.); (A.S.)
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23
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Jung M, Lee Y, Lee H, Moon KC. Clinicopathological characteristics of light chain proximal tubulopathy in Korean patients and the diagnostic usefulness of immunohistochemical staining for immunoglobulin light chain. BMC Nephrol 2020; 21:146. [PMID: 32326898 PMCID: PMC7178968 DOI: 10.1186/s12882-020-01813-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 04/16/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Light chain proximal tubulopathy (LCPT) is a rare paraproteinemic renal disease that has been mostly reported in Western patients. LCPT is characterized by the accumulation of immunoglobulin (Ig)-light chain (LC) in the proximal tubule. Immunohistochemical staining for Ig-LC has not been investigated in the context of LCPT. We reported the clinicopathological characteristics and Ig-LC immunoexpression of patients with LCPT for the first time in Korea. METHODS We reviewed the clinicopathological findings of 5 Korean patients diagnosed with LCPT between 2016 and 2018. In addition, immunohistochemical staining for κ-LC and λ-LC was conducted on paraffin-embedded tissues. RESULTS The median age was 63 years, and the male-to-female ratio was 3:2. The primary renal manifestations were either azotemia or tubular proteinuria. All patients were diagnosed with multiple myeloma with monoclonal κ-LC (#1-2) or λ-LC (#3-5) in the serum and urine. Kidney biopsies revealed diverse and subtle alterations of the proximal tubule, including crystallization, vacuolization, and/or swelling. Electron microscopy revealed crystals in patients #1-2 and non-crystalline particles within numerous/large/dysmorphic lysosomes in patients #3-5. Ig-LC restriction was demonstrated in the proximal tubule as κ-type in patients #1-2 and as λ-type in patients #3-5 by immunohistochemistry and immunofluorescence. Immunohistochemical staining showed diffuse positivity to κ- and λ-LC, although immunofluorescent staining for κ-LC was focal and weak. LCPT has diverse clinicopathological characteristics and subtle morphological alterations, which necessitate ancillary tests for diagnosis. CONCLUSIONS We introduced immunohistochemical staining for Ig-LC as a useful tool for the diagnosis of LCPT, especially in the case of κ-type crystals.
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Affiliation(s)
- Minsun Jung
- Department of Pathology, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Youngeun Lee
- Department of Pathology, Seoul National University Hospital, Seoul, 03080, Republic of Korea
| | - Hajeong Lee
- Department of Internal Medicine, Seoul National University Hospital, Seoul, 03080, Republic of Korea.,Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Kyung Chul Moon
- Department of Pathology, Seoul National University Hospital, Seoul, 03080, Republic of Korea. .,Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea.
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24
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Riefolo M, Malvi D, Bertuzzi C, Sabattini E, Valente S, Pasquinelli G, D'Errico A, Vasuri F. Intrahepatocellular crystal storing mimicking a clinical liver disease during monoclonal gammopathy: report of a case and review of the literature. Ultrastruct Pathol 2020; 44:153-157. [PMID: 32041459 DOI: 10.1080/01913123.2020.1725697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We present an unusual case of liver involvement in monoclonal gammopathy with generalized crystal-storing histiocytosis (G-CSH).A bone marrow storage disease was diagnosed in a 79-year-old man with monoclonal gammopathy of uncertain significance (MGUS). The patient presented with pleural effusion, an osteolytic lesion of the humerus, and an increase of aspartate transaminase and cholestatic markers that raised the clinical suspect of liver disease. A second bone marrow biopsy confirmed the diagnosis of MGUS with a histiocytic component suggestive for G-CSH.Liver biopsy showed an unremarkable histology, no significant inflammatory infiltrates, and intrasinusoidal foamy histiocytes. PAS and Masson's trichrome stains, showed, in the cytoplasm of both histiocytes and hepatocytes, rod-shaped eosinophilic crystals, which were immunoreactive for kappa light chains. Transmission electron microscopy performed on reprocessed histological sections confirmed the presence of crystals in the hepatocyte cytoplasms. Immunogold labeling intensely stained crystals for kappa light chains.To the best of our knowledge, this is the second case in which an intrahepatocellular crystal storage is described during liver involvement in G-CSH. The present case also suggests that an increase in liver serum enzymes may support the clinical diagnosis of liver CSH in a patient with MGUS.
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Affiliation(s)
- Mattia Riefolo
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Deborah Malvi
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Clara Bertuzzi
- Hematopathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Elena Sabattini
- Hematopathology Unit, Department of Hematology and Oncology, S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Sabrina Valente
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Gianandrea Pasquinelli
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Antonia D'Errico
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
| | - Francesco Vasuri
- Pathology Unit, Department of Experimental, Diagnostic and Specialty Medicine (DIMES), S. Orsola-Malpighi Hospital, Bologna University, Bologna, Italy
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An autopsy case of amyloid tubulopathy exhibiting characteristic spheroid-type deposition. Virchows Arch 2020; 477:157-163. [PMID: 31932919 DOI: 10.1007/s00428-019-02740-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/03/2019] [Accepted: 12/26/2019] [Indexed: 10/25/2022]
Abstract
An 84-year-old woman with a history of haemodialysis for renal failure from approximately 1 year before death. Autopsy revealed numerous spheroid-type amyloid deposits in the kidney that were observed mainly in the interstitium but not the glomeruli and vessels. In addition, intracytoplasmic small globular amyloid deposits in the proximal tubules in addition to amyloid casts were identified. Immunohistochemistry and proteomic analyses indicated these deposits were composed of λ light chains. Amyloid deposition was also found in the lung and heart. λ-type monoclonal protein was detected in her serum and increased numbers of CD138-positive cells with λ-restriction was observed in the bone marrow. The case was diagnosed as amyloid tubulopathy (AT) associated with systemic ALλ amyloidosis related to plasma cell neoplasm. This case indicates that AT is associated with ALλ amyloidosis, which developed systemically with characteristic amyloid deposition forms. These pathological features may be associated with her rapid progressive renal failure.
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Leung N, Bridoux F, Batuman V, Chaidos A, Cockwell P, D'Agati VD, Dispenzieri A, Fervenza FC, Fermand JP, Gibbs S, Gillmore JD, Herrera GA, Jaccard A, Jevremovic D, Kastritis E, Kukreti V, Kyle RA, Lachmann HJ, Larsen CP, Ludwig H, Markowitz GS, Merlini G, Mollee P, Picken MM, Rajkumar VS, Royal V, Sanders PW, Sethi S, Venner CP, Voorhees PM, Wechalekar AD, Weiss BM, Nasr SH. The evaluation of monoclonal gammopathy of renal significance: a consensus report of the International Kidney and Monoclonal Gammopathy Research Group. Nat Rev Nephrol 2019; 15:45-59. [PMID: 30510265 PMCID: PMC7136169 DOI: 10.1038/s41581-018-0077-4] [Citation(s) in RCA: 283] [Impact Index Per Article: 56.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The term monoclonal gammopathy of renal significance (MGRS) was introduced by the International Kidney and Monoclonal Gammopathy Research Group (IKMG) in 2012. The IKMG met in April 2017 to refine the definition of MGRS and to update the diagnostic criteria for MGRS-related diseases. Accordingly, in this Expert Consensus Document, the IKMG redefines MGRS as a clonal proliferative disorder that produces a nephrotoxic monoclonal immunoglobulin and does not meet previously defined haematological criteria for treatment of a specific malignancy. The diagnosis of MGRS-related disease is established by kidney biopsy and immunofluorescence studies to identify the monotypic immunoglobulin deposits (although these deposits are minimal in patients with either C3 glomerulopathy or thrombotic microangiopathy). Accordingly, the IKMG recommends a kidney biopsy in patients suspected of having MGRS to maximize the chance of correct diagnosis. Serum and urine protein electrophoresis and immunofixation, as well as analyses of serum free light chains, should also be performed to identify the monoclonal immunoglobulin, which helps to establish the diagnosis of MGRS and might also be useful for assessing responses to treatment. Finally, bone marrow aspiration and biopsy should be conducted to identify the lymphoproliferative clone. Flow cytometry can be helpful in identifying small clones. Additional genetic tests and fluorescent in situ hybridization studies are helpful for clonal identification and for generating treatment recommendations. Treatment of MGRS was not addressed at the 2017 IKMG meeting; consequently, this Expert Consensus Document does not include any recommendations for the treatment of patients with MGRS. This Expert Consensus Document from the International Kidney and Monoclonal Gammopathy Research Group includes an updated definition of monoclonal gammopathy of renal significance (MGRS) and recommendations for the use of kidney biopsy and other modalities for evaluating suspected MGRS
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Affiliation(s)
- Nelson Leung
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
| | - Frank Bridoux
- Department of Nephrology, Centre Hospitalier Universitaire et Université de Poitiers, Poitiers, France; CNRS UMR7276, Limoges, France; and Centre de Référence Amylose AL et Autres Maladies par Dépôt d'Immunoglobulines Monoclonales, Poitiers, France
| | - Vecihi Batuman
- Veterans Administration Medical Center, New Orleans, LA, USA and Tulane University Medical School, Tulane, LA, USA
| | - Aristeidis Chaidos
- Centre for Haematology, Department of Medicine, Imperial College London and Imperial College Healthcare NHS Trust, Hammersmith Hospital, London, UK
| | - Paul Cockwell
- Department of Nephrology, Renal Medicine - University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital, Birmingham, UK
| | - Vivette D D'Agati
- Department of Pathology, Renal Pathology Laboratory, Columbia University, College of Physicians and Surgeons, New York, NY, USA
| | - Angela Dispenzieri
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Fernando C Fervenza
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Jean-Paul Fermand
- Department of Haematology and Immunology, University Hospital St Louis, Paris, France
| | - Simon Gibbs
- The Victorian and Tasmanian Amyloidosis Service, Department of Haematology, Monash Univerity Easter Health Clinical School, Melbourne, Victoria, Australia
| | - Julian D Gillmore
- National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK
| | - Guillermo A Herrera
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
| | - Arnaud Jaccard
- Service d'Hématologie et de Thérapie Cellulaire, Centre de Référence des Amyloses Primitives et des Autres Maladies par Dépôts d'Immunoglobuline, CHU Limoges, Limoges, France
| | - Dragan Jevremovic
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Efstathios Kastritis
- Department of Clinical Therapeutics, School of Medicine National and Kapodistrian University of Athens Alexandra Hospital, Athens, Greece
| | - Vishal Kukreti
- University Health Network, Princess Margaret Cancer Centre, Toronto, Canada
| | - Robert A Kyle
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Helen J Lachmann
- National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK
| | | | - Heinz Ludwig
- Wilhelminen Cancer Research Institute, Wilhelminenspital, Vienna, Austria
| | - Glen S Markowitz
- Department of Pathology, Renal Pathology Laboratory, Columbia University, College of Physicians and Surgeons, New York, NY, USA
| | - Giampaolo Merlini
- Amyloidosis Research and Treatment Center, IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Peter Mollee
- Haematology Department, Princess Alexandra Hospital and School of Medicine, University of Queensland, Brisbane, Australia
| | - Maria M Picken
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
| | - Vincent S Rajkumar
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Virginie Royal
- Department of Pathology, Hôpital Maisonneuve-Rosemont, Université de Montreal, Montreal, Quebec, Canada
| | - Paul W Sanders
- Department of Medicine, University of Alabama at Birmingham and Department of Veterans Affairs Medical Center, Birmingham, AL, USA
| | - Sanjeev Sethi
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | | | - Peter M Voorhees
- Department of Hematologic Oncology and Blood Disorders, Levine Cancer Institute, Atrium System, Charlotte, NC, USA
| | - Ashutosh D Wechalekar
- National Amyloidosis Centre, Centre for Amyloidosis and Acute Phase Proteins, Division of Medicine, Royal Free Campus, University College London, London, UK
| | - Brendan M Weiss
- Abramson Cancer Center, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
| | - Samih H Nasr
- Division of Nephrology, Hematology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
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Proximal Tubulopathy With Fibrillary Inclusions: A Rare Manifestation of Lymphoma-Associated Monoclonal Gammopathy of Renal Significance (MGRS). Kidney Med 2019; 1:397-401. [PMID: 32734220 PMCID: PMC7380423 DOI: 10.1016/j.xkme.2019.07.013] [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] [Indexed: 11/21/2022] Open
Abstract
Light chain proximal tubulopathy is a rare M-proteinemia-related nephropathy. The inclusions, composed of light chains in light chain proximal tubulopathy, are generally crystalline, and most exhibit a rhombic shape. Noncrystalline structures, such as rods or needle shapes, may also be present. In our patient, one of the noncrystalline structures, fibrillary inclusions in the cytoplasm, were observed, as previously reported in only 4 patients whose primary disease was either multiple myeloma or monoclonal gammopathy of renal significance. This is the first report involving lymphoma. Early diagnosis of light chain proximal tubulopathy is important because those who undergo chemotherapy have an improved kidney prognosis. However, in cases of kidney involvement with blood disorders, thrombocytopenia is often present. Therefore, in our case, open kidney biopsy was selected. Noncrystalline light chain proximal tubulopathy is believed to be less likely to cause Fanconi syndrome. However, Fanconi syndrome was observed in 3 of the 4 patients with fibrillary inclusions. In our case, hypouricemia was improved by chemotherapy, suggesting that the patient presented with Fanconi syndrome. Noncrystalline light chain proximal tubulopathy with fibrillary inclusions may cause Fanconi syndrome, similar to crystalline light chain proximal tubulopathy. We report a case of light chain proximal tubulopathy with fibrillary inclusions complicated by low-grade B-cell lymphoma in which early treatment was successful.
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Kawamoto S, Hidaka Y, Kaneko Y, Misawa H, Nagahori K, Yoshino A, Okamura T, Ban S, Ueda Y, Takeda T. Remission of light chain proximal tubulopathy in IgG λ-type multiple myeloma by lenalidomide and dexamethasone therapy. CEN Case Rep 2019; 8:159-165. [PMID: 30721454 PMCID: PMC6620366 DOI: 10.1007/s13730-019-00382-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 01/24/2019] [Indexed: 01/18/2023] Open
Abstract
Light chain proximal tubulopathy is a rare manifestation of monoclonal gammopathy. A 73-year-old Japanese woman was noted to have urinary protein and hypertension on health examination and visited the regional clinic. She was noted to have IgG λ M protein and suspected of multiple myeloma. She was referred to us with massive proteinuria (7.5 g/g creatinine) and Bence Jones proteinuria without renal dysfunction. A renal biopsy revealed no glomerular abnormalities, but a tubular cast was observed partially in tubules without tubular atrophy or a crystalline structure. Direct Fast Scarlet staining was absent both in glomerulus and vascular wall. Immunofluorescence revealed λ light chain (LC) staining in the proximal tubules. Electron microscopy revealed nonspecific findings including increased lysosomes with irregular contours and mottled appearance. A bone marrow biopsy revealed plasma cell proliferation (35%) and multiple myeloma immunoglobulin G λ type. She showed progressive anemia and decrease of eGFR with elevated level of urinary β-2 microglobulin. She was treated with lenalidomide + dexamethasone (Ld). With Ld therapy, she achieved hematologic and nephrologic remission reducing the free LC, λ/κ ratio, urinary protein level, and urinary β-2 microglobulin level.
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Affiliation(s)
- Shinya Kawamoto
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan.
| | - Yuji Hidaka
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Yu Kaneko
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Hideo Misawa
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Katsuhiro Nagahori
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Atsunori Yoshino
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Takamitsu Okamura
- Department of Internal Medicine, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Shinichi Ban
- Department of Pathology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Yoshihiko Ueda
- Department of Pathology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
| | - Tetsuro Takeda
- Department of Nephrology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minamikoshigaya, Koshigaya, Saitama, 343-8555, Japan
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Cheng M, Gu X, Turbat-Herrera EA, Herrera GA. Tubular Injury and Dendritic Cell Activation Are Integral Components of Light Chain-Associated Acute Tubulointerstitial Nephritis. Arch Pathol Lab Med 2019; 143:1212-1224. [PMID: 31063013 DOI: 10.5858/arpa.2018-0032-oa] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Light chain-associated acute tubulointerstitial nephritis (LC-ATIN) is a variant of light chain proximal tubulopathy (LCPT). It is characterized by interstitial inflammation with tubulitis and deposition of monoclonal light chains in the tubulointerstitium. LC-ATIN is a rather poorly recognized pattern of LCPT and not much is known about this entity. OBJECTIVE.— To determine the clinicopathologic features of patients with LC-ATIN and investigate the proximal tubular injury and mechanism of interstitial inflammation in LC-ATIN. DESIGN.— A total of 38 cases of LC-ATIN were identified from the archives of 5043 renal biopsy specimens. In all cases, routine light microscopic examination, immunofluorescence, and electron microscopic examination were performed. In selected cases, immunofluorescent staining of dendritic cells and immunohistochemical staining for 4 tubular injury markers-KIM-1, p53, bcl-2, and Ki-67-were performed. RESULTS.— A characteristic finding in LC-ATIN cases was immunofluorescence staining of monoclonal light chains along tubular basement membranes in linear fashion and inside proximal tubular cells with a granular pattern. No monoclonal light chains were present in glomerular or vascular compartments confirmed with immunofluorescence, electron microscopy, and ultrastructural gold labeling. Ten of 15 LC-ATIN cases (67%) were concurrently positive for the 4 tubular injury markers. Dendritic cells were identified within the tubulointerstitium in the renal biopsy specimens, interacting with surrounding tubules with light-chain deposits and inflammatory cells. CONCLUSIONS.— Significant proximal tubular injury occurs associated with LC-ATIN, and the monoclonal light chains accumulated in proximal tubular cells contribute to the injury. Dendritic cells are involved in the pathogenesis of interstitial inflammation in LC-ATIN.
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Affiliation(s)
- Mingyu Cheng
- From the Department of Pathology and Laboratory Medicine, University of California Davis School of Medicine, Sacramento (Dr Cheng); and the Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport (Drs Gu, Turbat-Herrera, and Herrera)
| | - Xin Gu
- From the Department of Pathology and Laboratory Medicine, University of California Davis School of Medicine, Sacramento (Dr Cheng); and the Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport (Drs Gu, Turbat-Herrera, and Herrera)
| | - Elba A Turbat-Herrera
- From the Department of Pathology and Laboratory Medicine, University of California Davis School of Medicine, Sacramento (Dr Cheng); and the Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport (Drs Gu, Turbat-Herrera, and Herrera)
| | - Guillermo A Herrera
- From the Department of Pathology and Laboratory Medicine, University of California Davis School of Medicine, Sacramento (Dr Cheng); and the Department of Pathology and Translational Pathobiology, Louisiana State University Health Sciences Center, Shreveport (Drs Gu, Turbat-Herrera, and Herrera)
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Singh N, Pattanashetti N, Joshi K, Kohli HS, Gupta KL, Ramachandran R. Missed Monoclonal Disease Manifesting in Early Post-renal Transplant Period. Indian J Nephrol 2019; 29:65-69. [PMID: 30814798 PMCID: PMC6375021 DOI: 10.4103/ijn.ijn_384_17] [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: 12/02/2022] Open
Abstract
A 63-year-old diabetic gentleman with microvascular complications presented with advanced azotemia and anemia. He was stabilized with blood transfusion and hemodialysis. With the probable diagnosis of diabetic nephropathy-related end-stage renal disease, he underwent kidney transplantation. He had delayed graft function. Graft biopsy done on the 2nd postoperative day showed acute tubular necrosis. Graft biopsy repeated after 2 weeks for persistent graft dysfunction showed myeloma cast nephropathy (MCN) and light chain proximal tubulopathy. Work-up for multiple myeloma was positive. He was started on plasmapheresis and chemotherapy. However, he suffered sudden cardiac death during dialysis after 1 week. The presence of MCN in the early graft biopsy implies that it must have been the cause for his native kidney failure. Thus, renal failure in a diabetic should not always be presumed to be due to diabetic nephropathy, and kidney biopsy should be done in diabetics with atypical features.
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Affiliation(s)
- N Singh
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - N Pattanashetti
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - K Joshi
- Department of Pathology, Medicos Centre, Chandigarh, India
| | - H S Kohli
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - K L Gupta
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - R Ramachandran
- Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Kanzaki G, Okabayashi Y, Nagahama K, Ohashi R, Tsuboi N, Yokoo T, Shimizu A. Monoclonal Immunoglobulin Deposition Disease and Related Diseases. J NIPPON MED SCH 2019; 86:2-9. [DOI: 10.1272/jnms.jnms.2019_86-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Go Kanzaki
- Department of Analytic Human Pathology, Nippon Medical School
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine
| | - Yusuke Okabayashi
- Department of Analytic Human Pathology, Nippon Medical School
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine
| | | | - Ryuji Ohashi
- Department of Diagnostic Pathology, Nippon Medical School Hospital
| | - Nobuo Tsuboi
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine
| | - Akira Shimizu
- Department of Analytic Human Pathology, Nippon Medical School
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Brealey JK, Tran Y, Ninnes R, Abeyaratne A. Ultrastructural identification of a proximal tubulopathy without crystals in a relapsed multiple myeloma patient. Ultrastruct Pathol 2018; 42:458-463. [DOI: 10.1080/01913123.2018.1526243] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- John K Brealey
- Division of Anatomical Pathology, SA Pathology, Adelaide, Australia
| | - Yung Tran
- Division of Anatomical Pathology, SA Pathology, Adelaide, Australia
| | - Ruth Ninnes
- Division of Anatomical Pathology, SA Pathology, Adelaide, Australia
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Sirac C, Herrera GA, Sanders PW, Batuman V, Bender S, Ayala MV, Javaugue V, Teng J, Turbat-Herrera EA, Cogné M, Touchard G, Leung N, Bridoux F. Animal models of monoclonal immunoglobulin-related renal diseases. Nat Rev Nephrol 2018; 14:246-264. [DOI: 10.1038/nrneph.2018.8] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Mori A, Watanabe S, Tsuruga K, Joh K, Tanaka H. Free light chain-associated Fanconi syndrome in an adolescent. Pediatr Int 2017; 59:1281-1282. [PMID: 29205674 DOI: 10.1111/ped.13430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/11/2017] [Accepted: 10/02/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Ayaka Mori
- Department of Pediatrics, Hirosaki University Hospital, Hirosaki, Japan
| | - Shojiro Watanabe
- Department of Pediatrics, Hirosaki University Hospital, Hirosaki, Japan
| | - Kazushi Tsuruga
- Department of Pediatrics, Hirosaki University Hospital, Hirosaki, Japan
| | - Kensuke Joh
- Department of Pathology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroshi Tanaka
- Department of Pediatrics, Hirosaki University Hospital, Hirosaki, Japan.,Department of School Health Science, Hirosaki University Faculty of Education, Hirosaki, Japan
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Gammapatías monoclonales de significado renal. Nefrologia 2017; 37:465-477. [DOI: 10.1016/j.nefro.2017.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/13/2017] [Accepted: 03/14/2017] [Indexed: 01/02/2023] Open
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Wu CK, Yang AH, Lai HC, Lin BS. Combined proximal tubulopathy, crystal-storing histiocytosis, and cast nephropathy in a patient with light chain multiple myeloma. BMC Nephrol 2017; 18:170. [PMID: 28545410 PMCID: PMC5445476 DOI: 10.1186/s12882-017-0584-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 05/15/2017] [Indexed: 11/30/2022] Open
Abstract
Background The diagnosis of myeloma, a plasma dyscrasia, often results from the workup of unexplained renal disease. Persistent renal failure in myeloma is commonly caused by tubular nephropathy due to circulating immunoglobulins and free light chains. Myeloma cast nephropathy is characterized by crystalline precipitates of monoclonal light chains within distal tubules. Immunoglobulin crystallization rarely occurs intracellularly, within proximal tubular cells (light chain proximal tubulopathy) and interstitial histiocytes (crystal-storing histiocytosis). We present a case report of a rare simultaneous occurrence of light chain proximal tubulopathy, crystal-storing histiocytosis, and myeloma cast nephropathy in a patient with κ light chain multiple myeloma. Case presentation A 48-years-old man presented with uremia and anemia. Laboratory examination revealed low levels of serum IgG, IgA, and IgM. Serum and urine immunofixation electrophoresis showed a free κ monoclonal band. Bone marrow aspiration and biopsy revealed hypercellularity with marked plasmacytosis. Light microscopy revealed eosinophilic cuboid- and rhomboid-shaped crystals in the cytoplasm of proximal tubular epithelial cells, diffuse large mononuclear and multinuclear cells in the interstitium, and obstructed distal tubules with cast and giant cell reaction. Immunohistochemical examination indicated intense staining for κ light chains within casts, histiocytes, and tubular epithelial cells. Electron microscopy revealed electro-dense cuboid-, rhomboid-, or needle-shaped crystalline inclusions in proximal tubular epithelial cells and interstitial histiocytes. According to these results, we confirmed that this patient with myeloma exhibited simultaneous light chain proximal tubulopathy, crystal-storing histiocytosis, and myeloma cast nephropathy, which were attributed to monoclonal κ light chains. In addition to dialysis, the patient received induction chemotherapy with a combination of bortezomib, cyclophosphamide, and dexamethasone, followed by maintenance therapy with thalidomide. However, the patient did not regain renal function even when less than 5% plasma cells were detected in the bone marrow. Conclusion To the best of our knowledge, this is the first report of simultaneous light chain proximal tubulopathy, crystal-storing histiocytosis, and myeloma cast nephropathy in κ light chain multiple myeloma.
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Affiliation(s)
- Chung-Kuan Wu
- Division of Nephrology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, 95,Wen Chang Rd., Shih Lin District, Taipei, 11101, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - An-Hang Yang
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hung-Chih Lai
- Division of Hematology and Oncology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
| | - Bing-Shi Lin
- Division of Nephrology, Department of Internal Medicine, Shin-Kong Wu Ho-Su Memorial Hospital, 95,Wen Chang Rd., Shih Lin District, Taipei, 11101, Taiwan. .,School of Medicine, National Yang-Ming University, Taipei, Taiwan.
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Ross DW, Wanchoo R, Guigova A, Ghiuzeli C, Allen SL, Jhaveri KD. Light chain Fanconi syndrome in a patient with acute myeloid leukemia and monoclonal gammopathy of undetermined significance. CEN Case Rep 2017; 5:238-241. [PMID: 28508985 DOI: 10.1007/s13730-016-0232-3] [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: 02/04/2016] [Accepted: 08/10/2016] [Indexed: 11/24/2022] Open
Abstract
Proximal tubules are a target for paraproteinemic diseases. Cast nephropathy, light chain deposition diseases, and amyloidosis are frequently encountered in patients with multiple myeloma. Rarely, a subset of patients develop light chain Fanconi syndrome (LCFS). LCFS has been reported with multiple myeloma, monoclonal gammopathy of renal significance (MGRS), chronic lymphocytic leukemia, Waldenstrom's macroglobulinemia and diffuse large B-cell lymphoma. No cases have been described with other hematologic malignancies. We report the first case of lambda LCFS in a patient with both acute myeloid leukemia (AML) and monoclonal gammopathy of undetermined significance (MGUS).
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Affiliation(s)
- Daniel W Ross
- Division of Kidney Diseases and Hypertension, Department of Medicine, Hofstra Northwell School of Medicine, 450 Lakeville Road, Lake Success, NY, 11042, USA.
| | - Rimda Wanchoo
- Division of Kidney Diseases and Hypertension, Department of Medicine, Hofstra Northwell School of Medicine, 450 Lakeville Road, Lake Success, NY, 11042, USA
| | - Adriana Guigova
- Division of Hematology, Department of Medicine, Hofstra Northwell School of Medicine, 450 Lakeville Road, Lake Success, NY, 11042, USA
| | - Cristina Ghiuzeli
- Division of Hematology, Department of Medicine, Hofstra Northwell School of Medicine, 450 Lakeville Road, Lake Success, NY, 11042, USA
| | - Steven L Allen
- Division of Hematology, Department of Medicine, Hofstra Northwell School of Medicine, 450 Lakeville Road, Lake Success, NY, 11042, USA
| | - Kenar D Jhaveri
- Division of Kidney Diseases and Hypertension, Department of Medicine, Hofstra Northwell School of Medicine, 450 Lakeville Road, Lake Success, NY, 11042, USA
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Javaugue V, Bouteau I, Sirac C, Quellard N, Diolez J, Colombo A, Desport E, Ecotière L, Goujon JM, Fermand JP, Touchard G, Jaccard A, Bridoux F. [Classification and therapeutic management of monoclonal gammopathies of renal significance]. Rev Med Interne 2017; 39:161-170. [PMID: 28457684 DOI: 10.1016/j.revmed.2017.03.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Accepted: 03/11/2017] [Indexed: 10/19/2022]
Abstract
Two categories of renal disorders associated with monoclonal gammopathies are to be distinguished, according to the characteristics of the underlying B-cell clone. The first group of renal diseases always occurs in the setting of high tumor mass with production of large amounts of monoclonal immunoglobulins. The main complication is the so-called myeloma cast nephropathy, which almost invariably complicates high tumor mass myeloma. The second group includes all renal disorders caused by a monoclonal immunoglobulin secreted by a nonmalignant B-cell clone, and currently referred as a "monoclonal gammopathy of renal significance (MGRS)". This term was introduced to distinguish monoclonal gammopathies that are responsible for the development of kidney damage from those that are truly benign. The spectrum of renal diseases in MGRS is wide and its classification relies on the localization of renal lesions, either glomerular or tubular, and on the pattern of ultrastructural organization of immunoglobulin deposits. Physicochemical characteristics of the pathogenic monoclonal immunoglobulin are probably involved in their propensity to deposit or precipitate in the kidney, as illustrated by the high rate of recurrence of each specific type after kidney transplantation. Early diagnosis and efficient chemotherapy targeting the causal B-cell clone are mandatory to improve renal prognosis and patient survival.
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Affiliation(s)
- V Javaugue
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France; CNRS-UMR 7276, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, université de Limoges, 87000 Limoges, France.
| | - I Bouteau
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France
| | - C Sirac
- CNRS-UMR 7276, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, université de Limoges, 87000 Limoges, France
| | - N Quellard
- Service de pathologie ultrastructurale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 86021 Poitiers, France
| | - J Diolez
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France
| | - A Colombo
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France
| | - E Desport
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France
| | - L Ecotière
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France
| | - J-M Goujon
- Service de pathologie ultrastructurale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 86021 Poitiers, France; Laboratoire d'anatomopathologie, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 86021 Poitiers, France
| | - J-P Fermand
- Service d'immunologie et d'hématologie, hôpital Saint-Louis, 75010 Paris, France
| | - G Touchard
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France; Service de pathologie ultrastructurale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 86021 Poitiers, France
| | - A Jaccard
- Service d'hématologie, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Limoges, 87000 Limoges, France
| | - F Bridoux
- Service de néphrologie, hémodialyse et transplantation rénale, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers, France; CNRS-UMR 7276, centre national de référence maladies rares : amylose AL et autres maladies par dépôts d'immunoglobulines monoclonales, université de Limoges, 87000 Limoges, France
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Doshi M, Lahoti A, Danesh FR, Batuman V, Sanders PW. Paraprotein-Related Kidney Disease: Kidney Injury from Paraproteins-What Determines the Site of Injury? Clin J Am Soc Nephrol 2016; 11:2288-2294. [PMID: 27526707 PMCID: PMC5142058 DOI: 10.2215/cjn.02560316] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Disorders of plasma and B cells leading to paraproteinemias are associated with a variety of renal diseases. Understanding the mechanisms of injury and associated nephropathies provides a framework that aids clinicians in prompt diagnosis and appropriate adjunctive treatment of these disorders. Glomerular diseases that may be associated with paraproteinemias include amyloid deposition, monoclonal Ig deposition disease, proliferative GN with monoclonal Ig deposits, C3 glomerulopathy caused by alterations in the complement pathway, immunotactoid glomerulopathy, fibrillary GN, and cryoglobulinemia. Tubular lesions include the classic Fanconi syndrome, light-chain proximal tubulopathy, interstitial fibrosis, and cast nephropathy. These paraproteinemic renal diseases are distinct in their pathogenesis as well as their urinary and kidney biopsy findings. Renal pathology is usually initiated by deposition and direct involvement of the intact monoclonal Ig or Ig fragments with resident cells of the nephron. Our review summarizes current insights into the underlying molecular pathogenesis of these interesting kidney lesions.
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Affiliation(s)
- Mona Doshi
- Division of Nephrology, Wayne State University School of Medicine, Detroit, Michigan
| | - Amit Lahoti
- Section of Nephrology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Farhad R. Danesh
- Section of Nephrology, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Vecihi Batuman
- Department of Medicine, Southeast Louisiana Veterans Health Care System, New Orleans, Louisiana
- Department of Medicine, Tulane University Medical School, New Orleans, Louisiana
| | - Paul W. Sanders
- Department of Medicine, Nephrology Research and Training Center and
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, Alabama; and
- Department of Medicine, Veterans Affairs Medical Center, Birmingham, Alabama
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Gallan AJ, Khalighi MA. Lambda Light Chain Crystalline Cast Nephropathy and Proximal Tubulopathy. Kidney Int Rep 2016; 1:316-320. [PMID: 29142933 PMCID: PMC5678630 DOI: 10.1016/j.ekir.2016.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Attias P, Moktefi A, Matignon M, Dupuis J, Debiais-Delpech C, Grimbert P, Lang P, Audard V. Monotypic plasma cell interstitial nephritis as the only clinical manifestation in a patient with previously undiagnosed indolent multiple myeloma: A case report. Medicine (Baltimore) 2016; 95:e4391. [PMID: 27495052 PMCID: PMC4979806 DOI: 10.1097/md.0000000000004391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
INTRODUCTION Predominantly monotypic plasma cell infiltrates are an uncommon renal finding in patients with malignant lymphoplasmacytic proliferation. CASE PRESENTATION We report the case of a 52-year-old man with chronic kidney disease and significant proteinuria associated with a monoclonal immunoglobulin spike (IgGκ). Kidney biopsy revealed the presence of atypical multinucleated CD138 plasma cells with voluminous nuclei stained exclusively with a κ antibody. Electron microscopy showed mesangial and segmental parietal electron-dense, nonorganized hyaline deposits without immunogold labeling for the κ light chain. The bone marrow aspirate revealed 6% of apparently mature plasmocytes without dystrophy. We therefore concluded that the patient had an indolent multiple myeloma with specific renal involvement in the form of malignant monotypic interstitial plasmacytic infiltration. We initiated a specific chemotherapy regimen including bortezomib-cyclophosphamide-dexamethasone. After 4 months of follow-up, creatinine levels had improved slightly and free κ light-chain levels had decreased significantly within the normal range. CONCLUSION This case highlights the need to consider neoplastic interstitial plasma cell infiltration systematically in patients diagnosed with an apparently benign monoclonal gammopathy and to consider adaptation of the chemotherapy regimen, to improve renal function.
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Affiliation(s)
- Philippe Attias
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Néphrologie et Transplantation, Institut Francilien de Recherche en Néphrologie et Transplantation (IFRNT), Centre de Référence Maladie Rare Syndrome Néphrotique Idiopathique, Groupe Hospitalier Henri–Mondor/Albert-Chenevier
| | - Anissa Moktefi
- AP-HP, Département de Pathologie, Groupe Hospitalier Henri-Mondor/Albert-Chenevier
- Université Paris-Est-Créteil (UPEC), Département Hospitalo-Universitaire (DHU) Virus-Immunité-Cancer (VIC), Institut Mondor de Recherche Biomédicale (IMRB), Equipe 21, INSERM U 955
| | - Marie Matignon
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Néphrologie et Transplantation, Institut Francilien de Recherche en Néphrologie et Transplantation (IFRNT), Centre de Référence Maladie Rare Syndrome Néphrotique Idiopathique, Groupe Hospitalier Henri–Mondor/Albert-Chenevier
- Université Paris-Est-Créteil (UPEC), Département Hospitalo-Universitaire (DHU) Virus-Immunité-Cancer (VIC), Institut Mondor de Recherche Biomédicale (IMRB), Equipe 21, INSERM U 955
| | - Jehan Dupuis
- AP-HP, Unité d’Hémopathies Lymphoïdes, Groupe Hospitalier Henri-Mondor/Albert-Chenevier
- UPEC, DHU VIC, IMRB, Equipe 9, INSERM U 955, Créteil
| | - Céline Debiais-Delpech
- Centre de Référence des Amyloses Primitives et des Maladies de Dépôts d’Immunoglobulines Monoclonales
- Département de Pathologie, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Philippe Grimbert
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Néphrologie et Transplantation, Institut Francilien de Recherche en Néphrologie et Transplantation (IFRNT), Centre de Référence Maladie Rare Syndrome Néphrotique Idiopathique, Groupe Hospitalier Henri–Mondor/Albert-Chenevier
- Université Paris-Est-Créteil (UPEC), Département Hospitalo-Universitaire (DHU) Virus-Immunité-Cancer (VIC), Institut Mondor de Recherche Biomédicale (IMRB), Equipe 21, INSERM U 955
| | - Philippe Lang
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Néphrologie et Transplantation, Institut Francilien de Recherche en Néphrologie et Transplantation (IFRNT), Centre de Référence Maladie Rare Syndrome Néphrotique Idiopathique, Groupe Hospitalier Henri–Mondor/Albert-Chenevier
- Université Paris-Est-Créteil (UPEC), Département Hospitalo-Universitaire (DHU) Virus-Immunité-Cancer (VIC), Institut Mondor de Recherche Biomédicale (IMRB), Equipe 21, INSERM U 955
| | - Vincent Audard
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Néphrologie et Transplantation, Institut Francilien de Recherche en Néphrologie et Transplantation (IFRNT), Centre de Référence Maladie Rare Syndrome Néphrotique Idiopathique, Groupe Hospitalier Henri–Mondor/Albert-Chenevier
- Université Paris-Est-Créteil (UPEC), Département Hospitalo-Universitaire (DHU) Virus-Immunité-Cancer (VIC), Institut Mondor de Recherche Biomédicale (IMRB), Equipe 21, INSERM U 955
- Correspondence: Vincent Audard, Service de Néphrologie et Transplantation, Groupe Hospitalier Henri-Mondor/Albert-Chenevier, 51, Avenue du Marechal-de-Lattre-de-Tassigny, 94010 Créteil Cedex, France (e-mail: )
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Current anti-myeloma therapies in renal manifestations of monoclonal light chain-associated Fanconi syndrome: a retrospective series of 49 patients. Leukemia 2016; 31:123-129. [PMID: 27435002 DOI: 10.1038/leu.2016.195] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/08/2016] [Accepted: 06/16/2016] [Indexed: 11/09/2022]
Abstract
We retrospectively reviewed 49 patients with light chain (LC) Fanconi syndrome (FS). Patients presented with chronic kidney disease (median estimated glomerular filtration rate (eGFR) of 33 ml/min/1.73 m2) and tubular proteinuria. All patients tested had elevated fractional excretion of phosphate, uric acid, generalized aminoaciduria and/or normoglycemic glycosuria. Thirty-eight patients had monoclonal gammopathy of renal significance and eleven patients had an overt hematological malignancy. The monoclonal LC isotype was kappa in 46/49 cases. Kidney biopsy in 39 patients showed various proximal tubular lesions and characteristic LC intracytoplasmic crystalline inclusions in 24 patients. Forty-two patients received chemotherapy. Patients with plasma cell proliferation (n=38) received bortezomib-based regimens (n=11), immunomodulatory agents (n=7) or alkylating agents (n=6). High-dose melphalan (HDM) followed by autologous stem cell transplantation was performed in 14 patients. Hematological response was obtained in 90% of evaluable patients, assessed on serum free light chains (FLC). GFR remained stable as long as hematological response was maintained and declined when serum FLC level rebounded. Improvement in proximal tubule function occurred in 13 patients. In patients with LC-associated FS, chemotherapy using HDM and/or new generation anti-myeloma agents can stabilize renal function and improve proximal tubule function. Serum FLC should be used to assess the hematological response, related to renal outcome.
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Abstract
Cast nephropathy is the most common manifestation of renal injury in patients with multiple myeloma but is rarely reported in other conditions. We are reporting our experience in caring for a teenager with a metastatic neuroendocrine carcinoma who developed rapidly progressive kidney injury that advanced to end-stage renal disease. On renal biopsy extensive tubular necrosis and intratubular eosinophilic casts were noted. This previously unreported finding should prompt oncologists to closely monitor for such a complication in patients with secretory tumors. Whether early plasmapheresis could be of benefit, as has been tried in multiple myeloma, remains to be determined.
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Luciani A, Sirac C, Terryn S, Javaugue V, Prange JA, Bender S, Bonaud A, Cogné M, Aucouturier P, Ronco P, Bridoux F, Devuyst O. Impaired Lysosomal Function Underlies Monoclonal Light Chain-Associated Renal Fanconi Syndrome. J Am Soc Nephrol 2015; 27:2049-61. [PMID: 26614382 DOI: 10.1681/asn.2015050581] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 10/05/2015] [Indexed: 12/14/2022] Open
Abstract
Monoclonal gammopathies are frequently complicated by kidney lesions that increase the disease morbidity and mortality. In particular, abnormal Ig free light chains (LCs) may accumulate within epithelial cells, causing proximal tubule (PT) dysfunction and renal Fanconi syndrome (RFS). To investigate the mechanisms linking LC accumulation and PT dysfunction, we used transgenic mice overexpressing human control or RFS-associated κLCs (RFS-κLCs) and primary cultures of mouse PT cells exposed to low doses of corresponding human κLCs (25 μg/ml). Before the onset of renal failure, mice overexpressing RFS-κLCs showed PT dysfunction related to loss of apical transporters and receptors and increased PT cell proliferation rates associated with lysosomal accumulation of κLCs. Exposure of PT cells to RFS-κLCs resulted in κLC accumulation within enlarged and dysfunctional lysosomes, alteration of cellular dynamics, defective proteolysis and hydrolase maturation, and impaired lysosomal acidification. These changes were specific to the RFS-κLC variable (V) sequence, because they did not occur with control LCs or the same RFS-κLC carrying a single substitution (Ala30→Ser) in the V domain. The lysosomal alterations induced by RFS-κLCs were reflected in increased cell proliferation, decreased apical expression of endocytic receptors, and defective endocytosis. These results reveal that specific κLCs accumulate within lysosomes, altering lysosome dynamics and proteolytic function through defective acidification, thereby causing dedifferentiation and loss of reabsorptive capacity of PT cells. The characterization of these early events, which are similar to those encountered in congenital lysosomal disorders, provides a basis for the reported differential LC toxicity and new perspectives on LC-induced RFS.
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Affiliation(s)
- Alessandro Luciani
- Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Christophe Sirac
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Limoges, France; National Reference Center for Amyloidosis and other Monoclonal Immunoglobulin Deposition Diseases, University Hospital of Limoges, Poitiers, France
| | - Sara Terryn
- Division of Nephrology, UCL Medical School, Brussels, Belgium
| | - Vincent Javaugue
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Limoges, France; Department of Nephrology, University Hospital, Poitiers University, Poitiers, France
| | - Jenny Ann Prange
- Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Sébastien Bender
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Limoges, France; Department of Nephrology, University Hospital, Poitiers University, Poitiers, France
| | - Amélie Bonaud
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Limoges, France
| | - Michel Cogné
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Limoges, France
| | - Pierre Aucouturier
- Department of Immunology, National Institute of Health and Medical Research Unit 938, Saint Antoine Hospital, Pierre et Marie Curie University, Paris, France
| | - Pierre Ronco
- Department of Nephrology and Dialysis, Tenon Hospital, Paris, France; Department of Immunology, National Institute of Health and Medical Research Unit 938, Saint Antoine Hospital, Pierre et Marie Curie University, Department of Nephrology and Dialysis, Tenon Hospital, Paris, France; Sorbonne Universités, UPMC University of Paris, Paris, France
| | - Frank Bridoux
- Department of Immunology, National Center for Scientific Research, Joint Research Unit 7276, University of Limoges, Limoges, France; Department of Nephrology, University Hospital, Poitiers University, Poitiers, France;
| | - Olivier Devuyst
- Institute of Physiology, Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland; Division of Nephrology, UCL Medical School, Brussels, Belgium;
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Stokes MB, Valeri AM, Herlitz L, Khan AM, Siegel DS, Markowitz GS, D'Agati VD. Light Chain Proximal Tubulopathy: Clinical and Pathologic Characteristics in the Modern Treatment Era. J Am Soc Nephrol 2015; 27:1555-65. [PMID: 26374607 DOI: 10.1681/asn.2015020185] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 08/02/2015] [Indexed: 01/25/2023] Open
Abstract
Light chain proximal tubulopathy (LCPT) is characterized by cytoplasmic inclusions of monoclonal LC within proximal tubular cells. The significance of crystalline versus noncrystalline LCPT and the effect of modern therapies are unknown. We reported the clinical-pathologic features of 40 crystalline and six noncrystalline LCPT patients diagnosed between 2000 and 2014. All crystalline LCPTs were κ-restricted and displayed acute tubular injury. One-third of noncrystalline LCPT patients displayed λ-restriction or acute tubular injury. Only crystalline LCPT frequently required antigen retrieval to demonstrate monoclonal LC by immunofluorescence. In five of 38 patients, crystals were not detectable by light microscopy, but they were visible by electron microscopy. Hematolymphoid neoplasms, known before biopsy in only 15% of patients, included 21 monoclonal gammopathies of renal significance; 15 multiple myelomas; seven smoldering multiple myelomas; and three other neoplasms. Biopsy indications included Fanconi syndrome (38%; all with crystalline LCPT), renal insufficiency (83%), and proteinuria (98%). Follow-up was available for 30 (75%) patients with crystalline LCPT and all six patients with noncrystalline LCPT, of whom 11 underwent stem cell transplant, 16 received chemotherapy only, and nine were untreated. Complete or very good partial hematologic remissions occurred in six of 22 treated crystalline LCPT patients. By multivariable analysis, the only independent predictor of final eGFR was initial eGFR, highlighting the importance of early detection. All patients with crystalline LCPT treated with stem cell transplant had stable or improved kidney function, indicating the effectiveness of aggressive therapy in selected patients.
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Affiliation(s)
| | - Anthony M Valeri
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York
| | - Leal Herlitz
- Department of Pathology, Cleveland Clinic, Cleveland, Ohio; and
| | - Abdullah M Khan
- Department of Medicine, Hackensack University Medical Center, Hackensack, New Jersey
| | - David S Siegel
- Department of Medicine, Hackensack University Medical Center, Hackensack, New Jersey
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Picken MM, Dogan A. Pathologies of Renal and Systemic Intracellular Paraprotein Storage: Crystalopathies and Beyond. CURRENT CLINICAL PATHOLOGY 2015. [DOI: 10.1007/978-3-319-19294-9_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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