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Miao J, Herrmann SM, Obaidi Z, Caza T, Bonilla M. Paraprotein-Mediated Glomerular Diseases. ADVANCES IN KIDNEY DISEASE AND HEALTH 2024; 31:358-373. [PMID: 39084761 DOI: 10.1053/j.akdh.2024.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 08/02/2024]
Abstract
Paraproteinemias are a group of complex diseases associated with an overproduction of a monoclonal immunoglobulin that can cause a diversity of kidney disorders and end-organ damage. In this review, we focus on paraprotein-mediated glomerular diseases. Kidney biopsy plays a crucial role in diagnosing these disorders, enabling the identification of specific histological patterns. These lesions are categorized into organized (such as amyloidosis, immunotactoid glomerulopathy, fibrillary glomerulonephritis, cryoglobulinemic glomerulonephritis, and monoclonal crystalline glomerulopathies) and nonorganized deposits (such as monoclonal Ig deposition disease and proliferative glomerulonephritis with monoclonal Ig deposits) based on the characteristics of immunofluorescence findings and the ultrastructural appearance of deposits on electron microscopy. This review aims to provide an update, highlight, and discuss clinicopathological aspects such as definition, epidemiology, clinical manifestations, mechanisms of kidney injury, histological features, and diagnostic procedures.
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Affiliation(s)
- Jing Miao
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN
| | | | - Zainab Obaidi
- Department of Medicine, Section of Nephrology, University of Chicago, Chicago, IL
| | | | - Marco Bonilla
- Department of Medicine, Section of Nephrology, University of Chicago, Chicago, IL.
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2
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He H, Wang Z, Xu J, Liu Y, Shao Y, Hou Y, Gu J, Hu R, Xing G. Clinicopathological characteristics and prognosis in patients with monoclonal gammopathy and renal damage in central China: a multicenter retrospective cohort study. Sci Rep 2024; 14:7667. [PMID: 38561447 PMCID: PMC10984969 DOI: 10.1038/s41598-024-58467-z] [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: 01/05/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024] Open
Abstract
Renal involvement is common in monoclonal gammopathy (MG); however, the same patient may have both MG and non-paraprotein-associated renal damage. Accordingly, distinguishing the cause of renal damage is necessary because of the different clinical characteristics and associated treatments. In this multicenter retrospective cohort study, we described the clinicopathological characteristics and prognosis of 703 patients with MG and renal damage in central China. Patients were classified as having MG of renal significance (MGRS), MG of undetermined significance (MGUS), or hematological malignancy. 260 (36.98%), 259 (36.84%), and 184 (26.17%) had MGRS, MGUS, and hematological malignancies, respectively. Amyloidosis was the leading pattern of MGRS (74.23%), followed by thrombotic microangiopathy (8.85%) and monoclonal immunoglobulin deposition disease (8.46%). Membranous nephropathy was the leading diagnosis of MGUS (39.38%). Renal pathological findings of patients with hematological malignancies included paraprotein-associated lesions (84.78%) and non-paraprotein-associated lesions (15.22%). The presence of nephrotic syndrome and an abnormal free light chain (FLC) ratio were independently associated with MGRS. The overall survival was better in patients with MGUS than in those with MGRS or hematological malignancies.
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Affiliation(s)
- Huimin He
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Zheng Wang
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jiayun Xu
- Department of Nephrology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan, China
| | - Yun Liu
- Department of Nephrology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Yeqing Shao
- Department of Nephrology, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan, China
| | - Yulong Hou
- Department of Nephrology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Jinping Gu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Ruimin Hu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
| | - Guolan Xing
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.
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Choudhuri S, Rainone F. Assessment of current clinical practice throughout the UK for the diagnosis and management of monoclonal gammopathy of renal significance. EJHAEM 2023; 4:410-418. [PMID: 37206284 PMCID: PMC10188446 DOI: 10.1002/jha2.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/31/2023] [Indexed: 05/21/2023]
Abstract
Since the inception of the term monoclonal gammopathy of renal significance (MGRS) in 2012 by the International Kidney and Monoclonal Gammopathy Research Group, there have been no consensus guidelines specifically pertaining to the UK regarding to patient management. We aimed to identify both regional and cross-discipline variation in current clinical practice, to provide insight and rationale for a potential standardised pathway in the future. A national survey of 88 consultants from the disciplines of haematology and nephrology was conducted between June 2020 and July 2021. Agreement was evident for aspects of the diagnostic pathway, including presenting features likely to raise suspicion of MGRS and the most pertinent confounding factors to consider before renal biopsy. However, significant variability was identified in both the cohort of diagnostic tests used, as well as urinary work-up for patients with suspected MGRS. Treatment and monitoring frequency was also an aspect of management identified as variable. Despite differences in clinical practice across the UK, MGRS diagnosis was widely regarded to be the joint responsibility of both disciplines. The results provide an indication of inter-regional and interdisciplinary differences in practice, highlighting the need for improved awareness and standardised protocol for management of MGRS that applies to the UK population.
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Heybeli C, Alexander MP, Bentall A, Amer H, Buadi F, Dean PG, Dingli D, Dispenzieri A, El Ters M, Gertz MA, Issa N, Kapoor P, Kourelis T, Kukla A, Kumar S, Lacy MQ, Lorenz EC, Muchtar E, Murray D, Nasr SH, Prieto M, Rajkumar V, Schinstock CA, Stegall M, Warsame R, Leung N. Kidney Transplantation in Patients With Monoclonal Gammopathy of Renal Significance (MGRS)-Associated Lesions: A Case Series. Am J Kidney Dis 2022; 79:202-216. [PMID: 34175375 PMCID: PMC8702583 DOI: 10.1053/j.ajkd.2021.04.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 04/16/2021] [Indexed: 02/03/2023]
Abstract
RATIONALE & OBJECTIVE Data on kidney transplantation outcomes among patients with monoclonal gammopathy of renal significance (MGRS) are lacking. STUDY DESIGN Case series of patients with MGRS, some of whom received clone-directed therapies before kidney transplantation. SETTING & PARTICIPANTS 28 patients who underwent kidney transplantation from 1987 through 2016 after diagnosis with MGRS-associated lesions including light-chain deposition disease (LCDD), C3 glomerulopathy with monoclonal gammopathy (C3G-MG), and light-chain proximal tubulopathy (LCPT). FINDINGS Of the 19 patients with LCDD, 10 were treated before kidney transplantation and 9 were treatment-naive. Among the treated patients with LCDD, 3 (30%) experienced histologic recurrence, 2 (20%) grafts failed, and 2 (20%) died during a median follow-up of 70 (range, 3-162) months after transplant. In the treatment-naive LCDD group, 8 (89%) had histologic recurrence, 6 (67%) grafts failed, and 4 (44%) patients died during a median follow-up of 60 (range, 35-117) months. Of the 5 patients who had a complete response before transplant, none died, and only 1 experienced graft failure, 162 months after transplant. Of 5 patients with C3G-MG, 3 were treatment-naive before transplant. Both patients who were treated before transplant had histologic recurrence, and 1 experienced graft failure and died. Among the 3 patients with treatment-naive C3G-MG, histologic recurrence occurred in all, and graft loss and death were observed in 2 and 1, respectively. In the LCPT group (n=4), histologic recurrence was observed in all 3 patients who did not receive clone-directed therapies before transplant, and 2 of these patients died, 1 with a functioning kidney. The 1 patient with LCPT who received therapy before transplant did not have histologic recurrence or graft loss and survived. LIMITATIONS Small sample size, nonstandardized clinical management, retrospective design. CONCLUSIONS Recurrence is very common in all MGRS-associated lesions after kidney transplant. Achieving a complete hematologic response may reduce the risks of recurrence, graft loss, and death. More studies are needed to determine the effects of hematologic response on outcomes for each MGRS-associated lesion.
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Affiliation(s)
- Cihan Heybeli
- Division of Nephrology, Muş State Hospital, Muş, Turkey
| | | | - Andrew Bentall
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Hatem Amer
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Francis Buadi
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Patrick G Dean
- Division of Transplantation Surgery, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - David Dingli
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Angela Dispenzieri
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Mireille El Ters
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Morie A Gertz
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Naim Issa
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Prashant Kapoor
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Taxiarchis Kourelis
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Aleksandra Kukla
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Shaji Kumar
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Martha Q Lacy
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Elizabeth C Lorenz
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Eli Muchtar
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - David Murray
- Department of Laboratory Medicine and Pathology, MN, USA
| | - Samih H Nasr
- Division of Pathology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Mikel Prieto
- Division of Transplantation Surgery, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Vincent Rajkumar
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Carrie A Schinstock
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Mark Stegall
- Division of Transplantation Surgery, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Rahma Warsame
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Nelson Leung
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, USA,Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
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Ishimitsu A, Tojo A, Hirao J, Yokoyama S, Ohira T, Murayama Y, Ishimitsu T, Kang D, Honda K, Ehara T, Ishida K, Ueda Y. AL-Kappa Primary Amyloidosis with Apolipoprotein A-IV Deposition. Intern Med 2022; 61:871-876. [PMID: 35296622 PMCID: PMC8987257 DOI: 10.2169/internalmedicine.7955-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A 70-year-old woman with complaints of edema, general malaise, and hypotension was diagnosed with renal amyloidosis, and laser microdissection mass spectrometry revealed her amyloidosis to predominantly comprise the apolipoprotein A-IV type. The M-protein turned from negative to positive during the course, and a bone marrow biopsy showed smoldering myeloma. Treatment with bortezomib and dexamethasone failed to save her from heart failure six months after the onset. Western blotting of urine samples at the time of the renal biopsy showed that amyloid light-chain κ amyloidosis had been present since the onset. Unlike the myeloma, Congo red staining was positive in the plasma cells of the bone marrow.
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Affiliation(s)
- Akira Ishimitsu
- Department of Nephrology & Hypertension, Dokkyo Medical University, Japan
| | - Akihiro Tojo
- Department of Nephrology & Hypertension, Dokkyo Medical University, Japan
| | - Jun Hirao
- Department of Nephrology & Hypertension, Dokkyo Medical University, Japan
| | - Shohei Yokoyama
- Department of Nephrology & Hypertension, Dokkyo Medical University, Japan
| | - Takehiro Ohira
- Department of Nephrology & Hypertension, Dokkyo Medical University, Japan
| | - Yoshiki Murayama
- Department of Nephrology & Hypertension, Dokkyo Medical University, Japan
| | | | - Dedong Kang
- Department of Anatomy, Showa University School of Medicine, Japan
| | - Kazuho Honda
- Department of Anatomy, Showa University School of Medicine, Japan
| | - Takashi Ehara
- Department of Pathology, Shinshu University School of Medicine, Japan
| | - Kazuyuki Ishida
- Department of Diagnostic Pathology, Dokkyo Medical University, Japan
| | - Yoshihiko Ueda
- Department of Pathology, Dokkyo Medical University Saitama Medical Center, Japan
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6
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Mrosewski I, Urbank M. Identification of Paraproteins via Serum Immunofixation or Serum Immunosubtraction and Immunoturbidimetric Quantitation of Serum Immunoglobulins in the Laboratory Testing for Monoclonal Gammopathies. Arch Pathol Lab Med 2021; 145:1552-1557. [DOI: 10.5858/arpa.2020-0441-oa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2020] [Indexed: 11/06/2022]
Abstract
Context.—
In laboratory testing for monoclonal gammopathies, paraproteins are identified via serum immunofixation or serum immunosubtraction, and immunoturbidimetric quantitation of serum immunoglobulins is often used.
Objective.—
To evaluate methodologic differences between serum immunofixation and serum immunosubtraction, as well as in the quantitation of serum immunoglobulins on different clinical chemical platforms.
Design.—
Three hundred twenty-two unique routine patient samples were blinded and used for comparison between serum immunofixation on Sebia's HYDRASIS 2 and serum immunosubtraction on Sebia's CAPILLARYS 2, as well as between quantitation results of immunoglobulin A, G, and M on Abbott's ARCHITECT c16000PLUS and Roche's Cobas c 502 module. Microsoft Excel 2019 with the add-on Abacus 2.0 and MedCalc were used for statistical analysis and graphic depiction via bubble diagram, Passing-Bablok regressions, and Bland-Altman plots.
Results.—
The median age of patients was 75 years, and samples with paraproteinemia were nearly evenly split between sexes. Paraprotein identification differed remarkably between immunofixation and immunosubtraction. Quantitation of serum immunoglobulins showed higher values on Abbott's ARCHITECT c16000PLUS when compared with Roche's Cobas c 502 module.
Conclusions.—
Identification of paraproteins via serum immunosubtraction is inferior to serum immunofixation, which can have implications on the diagnosis and monitoring of patients with monoclonal gammopathy. If immunoturbidimetric quantitation of immunoglobulins is used for follow-up, the same clinical-chemical platform should be used consistently.
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Affiliation(s)
- Ingo Mrosewski
- From the Department of Laboratory Medicine, MDI Limbach Berlin GmbH, Berlin, Germany
| | - Matthias Urbank
- From the Department of Laboratory Medicine, MDI Limbach Berlin GmbH, Berlin, Germany
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7
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Affiliation(s)
- Nelson Leung
- From the Divisions of Nephrology and Hypertension and of Hematology (N.L.) and the Department of Laboratory Medicine and Pathology (S.H.N.), Mayo Clinic, Rochester, MN; and Department of Nephrology and Centre d'Investigation Clinique INSERM 1402, Centre de Référence Amylose AL et Autres Maladies par Dépôt d'Immunoglobulines Monoclonales, Centre Hospitalier Universitaire, Université de Poitiers, Poitiers, and Centre National de la Recherche Scientifique UMR7276, Université de Limoges, Limoges - all in France (F.B.)
| | - Frank Bridoux
- From the Divisions of Nephrology and Hypertension and of Hematology (N.L.) and the Department of Laboratory Medicine and Pathology (S.H.N.), Mayo Clinic, Rochester, MN; and Department of Nephrology and Centre d'Investigation Clinique INSERM 1402, Centre de Référence Amylose AL et Autres Maladies par Dépôt d'Immunoglobulines Monoclonales, Centre Hospitalier Universitaire, Université de Poitiers, Poitiers, and Centre National de la Recherche Scientifique UMR7276, Université de Limoges, Limoges - all in France (F.B.)
| | - Samih H Nasr
- From the Divisions of Nephrology and Hypertension and of Hematology (N.L.) and the Department of Laboratory Medicine and Pathology (S.H.N.), Mayo Clinic, Rochester, MN; and Department of Nephrology and Centre d'Investigation Clinique INSERM 1402, Centre de Référence Amylose AL et Autres Maladies par Dépôt d'Immunoglobulines Monoclonales, Centre Hospitalier Universitaire, Université de Poitiers, Poitiers, and Centre National de la Recherche Scientifique UMR7276, Université de Limoges, Limoges - all in France (F.B.)
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8
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Sarto C, Intra J, Fania C, Brivio R, Brambilla P, Leoni V. Monoclonal free light chain detection and quantification: Performances and limits of available laboratory assays. Clin Biochem 2021; 95:28-33. [PMID: 33991536 DOI: 10.1016/j.clinbiochem.2021.05.006] [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: 02/20/2021] [Revised: 04/25/2021] [Accepted: 05/10/2021] [Indexed: 11/19/2022]
Abstract
The detection and quantification of immunoglobulin free light chains in serum and urine is recommended for the diagnosis and monitoring of monoclonal gammopathies according to the guidelines of the International Myeloma Working Group (IMWG). Several tests are currently available in the clinical laboratory to detect and quantify free light chains but although quality, efficiency, and effectiveness have been improved, the results are still variable and poorly harmonized and standardized. The present review article wants to analyze these aspects, with a keen eye on techniques, such as mass spectrometry, that could replace in the practical clinical laboratory the current methods including Bence-Jones protein assay and free light chain immunoassays.
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Affiliation(s)
- C Sarto
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, (MB), Italy
| | - J Intra
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, 20900 Monza, (MB), Italy.
| | - C Fania
- Clinical Chemistry Unit, "Maggiore della Carità" University Hospital, 28100 Novara, Italy
| | - R Brivio
- Clinical Chemistry Laboratory, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale di Monza ASST-Monza, St Gerardo Hospital, via Pergolesi 33, 20900 Monza, (MB), Italy
| | - P Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, (MB), Italy
| | - V Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, Azienda Socio Sanitaria Territoriale della Brianza ASST-Brianza, Desio Hospital, via Mazzini 1, 20833 Desio, (MB), Italy
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9
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Rosner MH, Jhaveri KD, McMahon BA, Perazella MA. Onconephrology: The intersections between the kidney and cancer. CA Cancer J Clin 2021; 71:47-77. [PMID: 32853404 DOI: 10.3322/caac.21636] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 12/12/2022] Open
Abstract
Onconephrology is a new subspecialty of nephrology that recognizes the important intersections of kidney disease with cancer. This intersection takes many forms and includes drug-induced nephrotoxicity, electrolyte disorders, paraneoplastic glomerulonephritis, and the interactions of chronic kidney disease with cancer. Data clearly demonstrate that, when patients with cancer develop acute or chronic kidney disease, outcomes are inferior, and the promise of curative therapeutic regimens is lessened. This highlights the imperative for collaborative care between oncologists and nephrologists in recognizing and treating kidney disease in patients with cancer. In response to this need, specific training programs in onconephrology as well as dedicated onconephrology clinics have appeared. This comprehensive review covers many of the critical topics in onconephrology, with a focus on acute kidney injury, chronic kidney disease, drug-induced nephrotoxicity, kidney disease in stem cell transplantation, and electrolyte disorders in patients with cancer.
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Affiliation(s)
- Mitchell H Rosner
- Division of Nephrology, University of Virginia School of Medicine, Charlottesville, Virginia
| | - Kenar D Jhaveri
- Division of Kidney Disease and Hypertension, Zucker School of Medicine at Hofstra University, Great Neck, New York
| | - Blaithin A McMahon
- Division of Nephrology. Medical, University of South Carolina, Charleston, South Carolina
| | - Mark A Perazella
- Division of Nephrology, Yale University School of Medicine, New Haven, Connecticut
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10
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Smirnov AV, Afanasyev BV, Poddubnaya IV, Dobronravov VA, Khrabrova MS, Zakharova EV, Nikitin EA, Lysenko Kozlovskaya LV, Bobkova IN, Rameev VV, Batyushin MM, Moiseev IS, Darskaya EI, Pirogova OV, Mendeleeva LP, Biryukova LS. [Monoclonal gammopathy of renal significance: consensus of hematologists and nephrologists of Russia on the establishment of nosology, diagnostic approach and rationale for clone specific treatment]. TERAPEVT ARKH 2020; 92:10-22. [PMID: 33346441 DOI: 10.26442/00403660.2020.07.000659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Indexed: 11/22/2022]
Abstract
Monoclonal gammopathy of renal significance (MGRS) is a new nosology in modern nephrology and oncohematology. MGRS is defined as kidney injury due to nephrotoxic monoclonal immunoglobulin produced by the B-cell line clone which does not reach the hematological criteria for specific treatment initiation. Monoclonal proteins pathological effects on kidney parenchyma result in irreversible decline of kidney function till the end stage renal disease that in line with the position of International Consensus of hematologists and nephrologists determinates critical necessity for clone specific treatment in patients with MGRS despite the absence of hematological indications for treatment initiation. Main challenge of MGRS in Russian Federation is an inaccessibility of an in-time diagnostic and appropriate treatment for the great majority of patients due to the following reasons: 1) limited knowledge about the MGRS among hematologists and nephrologists; 2) lack of necessary diagnostic resources in most health-care facilities; 3) lack of approved clinical recommendations and medical economic standards for treatment of this pathological entity. Consensus document comprises the opinion of experts leading nephrologists and hematologists of Russian Federation on the problem of MGRS including the incoherence in nosology classification, diagnostics approach and rationale for clone specific treatment. Consensus document is based on conclusions and agreements reached during the conference of leading nephrologists and hematologists of Russia which was held in the framework of symposia Plasma cell dyscrasias and lymphoproliferative diseases: modern approaches to therapy, 1516 of March 2019, Pavlov First Saint Petersburg State Medical University. The present Consensus is intended to define the principal practical steps to resolve the problem of MGRS in Russian Federation that are summarized as final clauses.
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Affiliation(s)
- A V Smirnov
- Pavlov First Saint Petersburg State Medical University
| | - B V Afanasyev
- Pavlov First Saint Petersburg State Medical University
| | - I V Poddubnaya
- Russian Medical Academy of Continuous Professional Education
| | | | - M S Khrabrova
- Pavlov First Saint Petersburg State Medical University
| | - E V Zakharova
- Russian Medical Academy of Continuous Professional Education.,Yevdokimov Moscow State University of Medicine and Dentistry.,Botkin City Clinical Hospital
| | - E A Nikitin
- Russian Medical Academy of Continuous Professional Education.,Botkin City Clinical Hospital
| | | | - I N Bobkova
- Sechenov First Moscow State Medical University (Sechenov University)
| | - V V Rameev
- Sechenov First Moscow State Medical University (Sechenov University)
| | | | - I S Moiseev
- Pavlov First Saint Petersburg State Medical University
| | - E I Darskaya
- Pavlov First Saint Petersburg State Medical University
| | - O V Pirogova
- Pavlov First Saint Petersburg State Medical University
| | | | - L S Biryukova
- Russian Medical Academy of Continuous Professional Education.,National Research Center for Hematology
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11
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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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12
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Jain A, Ramasamy K. Time to Redefine Risk-Stratification and Response Criteria in Immunoglobulin Light Chain Amyloidosis? CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2020; 20:e769-e776. [PMID: 32653456 DOI: 10.1016/j.clml.2020.05.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/21/2020] [Accepted: 05/29/2020] [Indexed: 12/20/2022]
Abstract
Immunoglobulin light chain (AL) amyloidosis results from clonal plasma cell (PC)-derived immunoglobulin light chain-mediated end-organ dysfunction, the extent and severity of which predicts survival. Anti-PC therapies reduce clonal light chain burden, which usually results in improvement of organ function, and consequently overall survival. Response assessment is critical to gauge therapeutic efficacy, to report clinical trial outcomes, and to switch therapy in those without response. Response in AL amyloidosis is 2-fold: hematologic response and organ response (OR). Depth of hematologic response is graded on the basis of serum free light chain (sFLC) parameters, but assessment of OR is binary. The role of normal sFLC ratio or complete remission as a treatment end point has been challenged, thus highlighting the need to quantify involved FLC and residual PC beyond the normal sFLC ratio to possibly account for the ongoing organ damage seen in some patients with complete remission. Mass spectrometry and urinary exosome represent ultrasensitive strategies to estimate involved FLC below the detection threshold of current sFLC assays. The role of new sFLC parameters and minimal residual disease as potential prognostic parameters has been recognized. Brain natriuretic peptide (BNP) and 24-hour proteinuria:estimated glomerular filtration rate ratio were identified to overcome certain limitations of N-terminal-Pro-BNP, 24-hour proteinuria, and estimated glomerular filtration rate for cardiac and renal response assessment, respectively. Use of monoclonal antibodies targeting PC and amyloid deposits has expanded the therapeutic armamentarium of AL amyloidosis, and given their excellent efficacy, early ORs are reported. This review provides insights into recent advances in the risk-stratification and response assessment of patients with AL amyloidosis in light of the changing therapeutic paradigms. Incorporation of these advancements into formal consensus guidelines would require further validation.
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Affiliation(s)
- Ankur Jain
- Department of hematology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
| | - Karthik Ramasamy
- Department of Haematology, Oxford University Hospitals, NHS Foundation Trust; NIHR BRC Blood Theme, Oxford, England, UK; Oxford Myeloma Centre for Translational Research
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13
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Donaghy D, Moore AR. Identification of canine IgG and its subclasses, IgG1, IgG2, IgG3 and IgG4, by immunofixation and commercially available antisera. Vet Immunol Immunopathol 2020; 221:110014. [PMID: 32004910 DOI: 10.1016/j.vetimm.2020.110014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 01/09/2020] [Accepted: 01/22/2020] [Indexed: 12/12/2022]
Abstract
Immunofixation is a diagnostic and research tool used for characterizing the electrophoretic location of immunoglobulin fractions in serum and urine. Commercially available polyclonal antisera which discriminate two IgG subclasses (IgG1 and IgG2) are available and commonly used. More recently, four IgG subclasses have been defined in the dog based on cDNA data. Archived serum from 16 dogs with naturally occurring monoclonal or biclonal gammopathies were characterized using routine serum protein electrophoresis, routine immunofixation and LCMS/MS as 3 IgA, 3 IgM, 2 IgG2, 7 IgG3 and 2 IgG4 heavy chain predominant cases. Immunofixation reactivity of a panel of commercially available antisera to these cases was characterized. The anti-human IgG antisera was the only tested antisera which bound all canine IgG restricted bands without also labelling IgA or IgM heavy chains or light chains. The tested polyclonal antisera labeled as reacting with canine IgG2 bound canine IgG2, IgG3, IgA and IgM and may label IgG1. The tested polyclonal antisera labeled as reacting with canine IgG1 bound the canine IgG4 bands but not those identified as IgA, IgM, IgG2 or IgG3 and likely did not bind IgG1. This data suggests that commercially available polyclonal IgG1 antisera (Bethyl A40 - 120A and Bio-Rad AHP947) can be used to positively but possibly not selectively identify canine IgG4 by immunofixation.
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Affiliation(s)
- Dillon Donaghy
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Science, Colorado State University, Fort Collins, CO, USA
| | - A Russell Moore
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Science, Colorado State University, Fort Collins, CO, USA.
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Peña C, Schutz NP, Riva E, Valjalo R, Majlis A, López‐Vidal H, Lois V, Zamora D, Ochoa P, Shanley C, Gonzalez JT, Fantl D, Correa G, Ramirez J, Mur P, Silva G, Verri V, Rojas C, Escobar K, Glavic G, Méndez GP. Epidemiological and clinical characteristics and outcome of monoclonal gammopathy of renal significance‐related lesions in Latin America. Nephrology (Carlton) 2019; 25:442-449. [DOI: 10.1111/nep.13685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 11/20/2019] [Accepted: 12/01/2019] [Indexed: 11/28/2022]
Affiliation(s)
- Camila Peña
- Department of HematologyHospital del Salvador Santiago de Chile
| | - Natalia P. Schutz
- Department of HematologyHospital Italiano de Buenos Aires Buenos Aires Argentina
| | - Eloísa Riva
- Department of HematologyCátedra de Hematología, Hospital de Clínicas, Facultad de Medicina Montevideo Uruguay
- Department of HematologyHospital Británico Montevideo Uruguay
| | - Ricardo Valjalo
- Department of NephrologyHospital del Salvador Santiago de Chile
| | - Alejandro Majlis
- Department of Hematology, Hemato‐Oncology DepartmentClínica Las Condes Santiago de Chile
| | | | - Vivianne Lois
- Department of HematologyHospital Barros Luco Trudeau Santiago de Chile
| | - Daniela Zamora
- Department of NephrologyHospital Barros Luco Trudeau Santiago de Chile
| | - Paola Ochoa
- Department of HematologyInstituto Alexander Fleming Buenos Aires Argentina
| | - Claudia Shanley
- Department of HematologyHospital Británico Buenos Aires Argentina
| | | | - Dorotea Fantl
- Department of HematologyHospital Italiano de Buenos Aires Buenos Aires Argentina
| | - Gonzalo Correa
- Department of NephrologyHospital del Salvador Santiago de Chile
| | | | - Paola Mur
- Department of NephrologyHospital San Juan de Dios Santiago de Chile
| | | | - Verónica Verri
- Department of HematologyInstituto de Investigaciones Médicas Alfredo Lanari – UBA Buenos Aires Argentina
| | - Christine Rojas
- Department of HematologyHospital Gustavo Fricke Viña del Mar Chile
| | - Karen Escobar
- Department of HematologyHospital Gustavo Fricke Viña del Mar Chile
| | - Gustavo Glavic
- Department of NephrologyHospital Sótero del Río Santiago de Chile
| | - Gonzalo P. Méndez
- Department of Pathology, Facultad de MedicinaPontificia Universidad Católica de Chile Santiago de Chile
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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: 287] [Impact Index Per Article: 57.4] [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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16
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Moloudizargari M, Abdollahi M, Asghari MH, Zimta AA, Neagoe IB, Nabavi SM. The emerging role of exosomes in multiple myeloma. Blood Rev 2019; 38:100595. [PMID: 31445775 DOI: 10.1016/j.blre.2019.100595] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 08/01/2019] [Accepted: 08/06/2019] [Indexed: 12/18/2022]
Abstract
Multiple myeloma (MM), one of the most prevalent hematological malignancies, accounts for approximately 10% of all blood cancers. In spite of the recent advancements in MM therapy, this malignancy of terminally differentiated plasma cells (PCs) continues to remain a hard-to-cure disease due to the emergence of drug resistance and frequent relapses. It is now well-established that the tumor-supportive involvement of the bone marrow microenvironment (BMM) including the cellular and non-cellular elements are the major causes behind treatment failures of MM as well as its main complications such as osteolytic bone loss. Exosomes (EXs) are membranous structures that carry signaling molecules and have recently received a great deal of attention as important mediators of inter-cellular communication in health and disease. EXs involve in the growth and drug resistance of many tumors via delivering their rich contents of bioactive molecules including miRNAs, growth factors, cytokines, signaling molecules, etc. With regard to MM, many studies have reported that EXs are among the main culprits playing key roles in the vicious network within the BMM of these patients. The main producers of EXs that largely contribute to MM pathogenesis are bone marrow stromal cells (BMSCs) as well as MM cells themselves. These cell types produce large amounts of EXs that affect a variety of target cells including natural killer (NK) cells, osteoclasts (OCs) and osteoblasts (OBs) to the advantage of tumor survival and progression. These EXs contain a different profile of proteins and miRNAs from that of EXs obtained from their counterparts in healthy individuals. MM patients exhibit distinguishable elevations in some of their contents such as miR-21, miR-146a, let-7b and miR-18a, while some molecules like miR-15a are markedly downregulated in EXs of MM patients compared to healthy individuals. These findings make EXs desirable biomarkers for early prediction of disease progression and drug resistance in the context of MM. On the other hand, due to the tumor-supportive role of EXs, targeting these structures in parallel to the conventional therapeutic regimens may be a promising approach to a successful anti-MM therapy. In the present work, an extensive review of the literature has been carried out to highlight the recent advances in the field.
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Affiliation(s)
- Milad Moloudizargari
- Department of Immunology, School of Medicine, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group (TDG), Pharmaceutical Sciences Research Center (PSRC), The institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Asghari
- Department of Pharmacology and Toxicology, School of Medicine, Babol University of Medical Sciences, Babol, Iran.
| | - Alina Andreea Zimta
- MedFuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania
| | - Ioana Berindan Neagoe
- MedFuture Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania; Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400337 Cluj-Napoca, Romania
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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Huang J, Sun C, Su H, Zhang C, Xiong J. Bortezomib-Based Chemotherapy with Autologous Stem Cell Transplantation for Monoclonal Gammopathy of Renal Significance: A Case Report and Literature Review. Kidney Blood Press Res 2019; 44:858-869. [PMID: 31352451 DOI: 10.1159/000501314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 06/02/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The term monoclonal gammopathy of renal significance (MGRS) was introduced in 2012 to emphasize kidney lesions in monoclonal gammopathy patients. Bortezomib-based chemotherapy has become the first-line treatment for MGRS. OBJECTIVES The objective of this study was to investigate whether the strategy of combining chemotherapy with autologous stem cell transplantation (ASCT) could improve prognosis and decrease functional kidney impairment in patients with MGRS. METHODS We reported the case of a 44-year-old Asian patient who was diagnosed with MGRS and received 5 cycles of Velcade® (a trade name for bortezomib), thalidomide, and dexamethasone therapy (VTD therapy), and subsequently underwent ASCT. In addition, we performed a literature review and summarized the latest advances in the characterization, treatment, and prognosis of MGRS. RESULTS The patient was diagnosed with light chain deposition disease by renal biopsy. After 5 cycles of VTD therapy, the patient had a very good partial response characterized by the resolution of M-protein (20.2% before treatment vs. 2.5% after treatment), remission of the level of serum free lambda (FLAM; over 80% decline), and normalization of the serum free light chain (sFLC) ratio (κ to λ). He also had a renal response characterized by a decreased serum creatinine level (1.61 vs.1.34 mg/dL) and less severe proteinuria (6.77 g/24 h vs.1.264 g/24 h) after chemotherapy. Importantly, after ASCT, the patient achieved a complete response (CR) characterized by a negative serum immunofixation electrophoresis (IFE) result and a dramatic decrement in FLAM (over 90%). Furthermore, 6 months after ASCT, the patient still remained in stable condition with a negative IFE result, normal sFLC ratio, and low level of serum creatinine (1.31 mg/dL) and proteinuria (0.339 g/24 h). In our retrospective literature analysis, we found that MGRS patient survival time and renal outcome had been markedly improved by current therapies due to the popularization of bortezomib-based chemotherapy and ASCT. CONCLUSIONS The patient successfully achieved CR after VTD therapy followed by ASCT. However, this treatment is controversial, and a standard therapy recommendation for MGRS has not been established. Bortezomib-based chemotherapy combined with ASCT may have prospects for the treatment of MGRS, but the exact effects of ASCT remain unclear and should be thoroughly investigated.
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Affiliation(s)
- Jing Huang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunyan Sun
- Department of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Xiong
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,
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18
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Cao Q, Qi H, Yao L, Liu Q. Monoclonal gammopathy of renal significance: clinical manifestation, pathogenic characteristic and treatment. Panminerva Med 2019; 62:38-53. [PMID: 30848114 DOI: 10.23736/s0031-0808.19.03609-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Monoclonal gammopathy of renal significance (MGRS) is a group of renal disorders caused by a monoclonal immunoglobulin (MIg) secreted by a dangerous plasmatic/B-cell clone hyperplasia through MIg deposition or dysfunction of complement pathway, with increasing risk of progress to end stage renal disease (ESRD) and the underlying hematologic malignancy. The combination of renal biopsy, complete laboratory examination and bone marrow biopsy is an indispensable diagnostic tool for MGRS to identify accurately and unequivocally the pathogenic monoclonal MIg and provide guidance to treatment. Treatment of MGRS is composed of conventional therapy, chemotherapy, and stem cell transplantation to target the underlying clone and eliminate the noxious MIg on the basis of clinical data of some retrospective studies and a small amount of prospective trial. In addition, it is worthwhile point out assessment of therapeutic effect is significantly relevant for renal and overall prognosis. Thus, by comprehensively analyzing the clinical manifestations and pathogenic characteristic of MGRS, early recognition and prompt treatment can improve the prognosis and prevent post-translation recurrence with multidisciplinary cooperation.
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Affiliation(s)
- Qin Cao
- Department of Gastroenterology, The First Hospital of China Medical University, Shenyang, China
| | - Huimeng Qi
- Department of General Practice, The First Hospital of China Medical University, Shenyang, China
| | - Li Yao
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, China
| | - Qiang Liu
- Department of Nephrology, The First Hospital of China Medical University, Shenyang, China -
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19
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Wang CH, Hogan JJ. Monoclonal Gammopathies and Kidney Disease: Searching for Significance. Clin J Am Soc Nephrol 2018; 13:1781-1782. [PMID: 30442863 PMCID: PMC6302335 DOI: 10.2215/cjn.12401018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Christina Hao Wang
- Division of Nephrology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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20
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Willrich MA, Murray DL, Kyle RA. Laboratory testing for monoclonal gammopathies: Focus on monoclonal gammopathy of undetermined significance and smoldering multiple myeloma. Clin Biochem 2018; 51:38-47. [DOI: 10.1016/j.clinbiochem.2017.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 05/01/2017] [Accepted: 05/03/2017] [Indexed: 02/07/2023]
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21
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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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22
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He L, Anderson LC, Barnidge DR, Murray DL, Hendrickson CL, Marshall AG. Analysis of Monoclonal Antibodies in Human Serum as a Model for Clinical Monoclonal Gammopathy by Use of 21 Tesla FT-ICR Top-Down and Middle-Down MS/MS. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:827-838. [PMID: 28247297 DOI: 10.1007/s13361-017-1602-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/07/2017] [Accepted: 01/11/2017] [Indexed: 05/27/2023]
Abstract
With the rapid growth of therapeutic monoclonal antibodies (mAbs), stringent quality control is needed to ensure clinical safety and efficacy. Monoclonal antibody primary sequence and post-translational modifications (PTM) are conventionally analyzed with labor-intensive, bottom-up tandem mass spectrometry (MS/MS), which is limited by incomplete peptide sequence coverage and introduction of artifacts during the lengthy analysis procedure. Here, we describe top-down and middle-down approaches with the advantages of fast sample preparation with minimal artifacts, ultrahigh mass accuracy, and extensive residue cleavages by use of 21 tesla FT-ICR MS/MS. The ultrahigh mass accuracy yields an RMS error of 0.2-0.4 ppm for antibody light chain, heavy chain, heavy chain Fc/2, and Fd subunits. The corresponding sequence coverages are 81%, 38%, 72%, and 65% with MS/MS RMS error ~4 ppm. Extension to a monoclonal antibody in human serum as a monoclonal gammopathy model yielded 53% sequence coverage from two nano-LC MS/MS runs. A blind analysis of five therapeutic monoclonal antibodies at clinically relevant concentrations in human serum resulted in correct identification of all five antibodies. Nano-LC 21 T FT-ICR MS/MS provides nonpareil mass resolution, mass accuracy, and sequence coverage for mAbs, and sets a benchmark for MS/MS analysis of multiple mAbs in serum. This is the first time that extensive cleavages for both variable and constant regions have been achieved for mAbs in a human serum background. Graphical Abstract ᅟ.
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Affiliation(s)
- Lidong He
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32310, USA
| | - Lissa C Anderson
- National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - David R Barnidge
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
| | - David L Murray
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Christopher L Hendrickson
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32310, USA
- National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Dr., Tallahassee, FL, 32310, USA
| | - Alan G Marshall
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32310, USA.
- National High Magnetic Field Laboratory, Florida State University, 1800 East Paul Dirac Dr., Tallahassee, FL, 32310, USA.
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