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Nadeem O, Aranha MP, Redd R, Timonian M, Magidson S, Lightbody ED, Alberge JB, Bertamini L, Dutta AK, El-Khoury H, Bustoros M, Laubach JP, Bianchi G, O'Donnell E, Wu T, Tsuji J, Anderson K, Getz G, Trippa L, Richardson PG, Sklavenitis-Pistofidis R, Ghobrial IM. Long-Term Follow-Up Defines the Population That Benefits from Early Interception in a High-Risk Smoldering Multiple Myeloma Clinical Trial Using the Combination of Ixazomib, Lenalidomide, and Dexamethasone. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.04.19.24306082. [PMID: 38699307 PMCID: PMC11064995 DOI: 10.1101/2024.04.19.24306082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2024]
Abstract
Background Early therapeutic intervention in high-risk SMM (HR-SMM) has demonstrated benefit in previous studies of lenalidomide with or without dexamethasone. Triplets and quadruplet studies have been examined in this same population. However, to date, none of these studies examined the impact of depth of response on long-term outcomes of participants treated with lenalidomide-based therapy, and whether the use of the 20/2/20 model or the addition of genomic alterations can further define the population that would benefit the most from early therapeutic intervention. Here, we present the results of the phase II study of the combination of ixazomib, lenalidomide, and dexamethasone in patients with HR-SMM with long-term follow-up and baseline single-cell tumor and immune sequencing that help refine the population to be treated for early intervention studies. Methods This is a phase II trial of ixazomib, lenalidomide, and dexamethasone (IRD) in HR-SMM. Patients received 9 cycles of induction therapy with ixazomib 4mg on days 1, 8, and 15; lenalidomide 25mg on days 1-21; and dexamethasone 40mg on days 1, 8, 15, and 22. The induction phase was followed by maintenance with ixazomib 4mg on days 1, 8, and 15; and lenalidomide 15mg d1-21 for 15 cycles for 24 months of treatment. The primary endpoint was progression-free survival after 2 years of therapy. Secondary endpoints included depth of response, biochemical progression, and correlative studies included single-cell RNA sequencing and/or whole-genome sequencing of the tumor and single-cell sequencing of immune cells at baseline. Results Fifty-five patients, with a median age of 64, were enrolled in the study. The overall response rate was 93%, with 31% of patients achieving a complete response and 45% achieving a very good partial response or better. The most common grade 3 or greater treatment-related hematologic toxicities were neutropenia (16 patients; 29%), leukopenia (10 patients; 18%), lymphocytopenia (8 patients; 15%), and thrombocytopenia (4 patients; 7%). Non-hematologic grade 3 or greater toxicities included hypophosphatemia (7 patients; 13%), rash (5 patients; 9%), and hypokalemia (4 patients; 7%). After a median follow-up of 50 months, the median progression-free survival (PFS) was 48.6 months (95% CI: 39.9 - not reached; NR) and median overall survival has not been reached. Patients achieving VGPR or better had a significantly better progression-free survival (p<0.001) compared to those who did not achieve VGPR (median PFS 58.2 months vs. 31.3 months). Biochemical progression preceded or was concurrent with the development of SLiM-CRAB criteria in eight patients during follow-up, indicating that biochemical progression is a meaningful endpoint that correlates with the development of end-organ damage. High-risk 20/2/20 participants had the worst PFS compared to low- and intermediate-risk participants. The use of whole genome or single-cell sequencing of tumor cells identified high-risk aberrations that were not identified by FISH alone and aided in the identification of participants at risk of progression. scRNA-seq analysis revealed a positive correlation between MHC class I expression and response to proteasome inhibition and at the same time a decreased proportion of GZMB+ T cells within the clonally expanded CD8+ T cell population correlated with suboptimal response. Conclusions Ixazomib, lenalidomide and dexamethasone in HR-SMM demonstrates significant clinical activity with an overall favorable safety profile. Achievement of VGPR or greater led to significant improvement in time to progression, suggesting that achieving deep response is beneficial in HR-SMM. Biochemical progression correlates with end-organ damage. Patients with high-risk FISH and lack of deep response had poor outcomes. ClinicalTrials.gov identifier: ( NCT02916771 ).
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Lee DJ, El-Khoury H, Tramontano AC, Alberge JB, Perry J, Davis MI, Horowitz E, Redd R, Sakrikar D, Barnidge D, Perkins MC, Harding S, Mucci L, Rebbeck TR, Ghobrial IM, Marinac CR. Mass spectrometry-detected MGUS is associated with obesity and other novel modifiable risk factors in a high-risk population. Blood Adv 2024; 8:1737-1746. [PMID: 38212245 PMCID: PMC10997907 DOI: 10.1182/bloodadvances.2023010843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 10/31/2023] [Accepted: 11/11/2023] [Indexed: 01/13/2024] Open
Abstract
ABSTRACT Monoclonal gammopathy of undetermined significance (MGUS) is a premalignant condition of multiple myeloma with few known risk factors. The emergence of mass spectrometry (MS) for the detection of MGUS has provided new opportunities to evaluate its risk factors. In total, 2628 individuals at elevated risk for multiple myeloma were enrolled in a screening study and completed an exposure survey (PROMISE trial). Participant samples were screened by MS, and monoclonal proteins (M-proteins) with concentrations of ≥0.2 g/L were categorized as MS-MGUS. Multivariable logistic models evaluated associations between exposures and MS outcomes. Compared with normal weight (body mass index [BMI] of 18.5 to <25 kg/m2), obesity (BMI of ≥30 kg/m2) was associated with MS-MGUS, adjusting for age, sex, Black race, education, and income (odds ratio [OR], 1.73; 95% confidence interval [CI], 1.21-2.47; P = .003). High physical activity (≥73.5 metabolic equivalent of task (MET)-hours per week vs <10.5 MET-hours per week) had a decreased likelihood of MS-MGUS (OR, 0.45, 95% CI, 0.24-0.80; P = .009), whereas heavy smoking and short sleep had increased likelihood of MS-MGUS (>30 pack-years vs never smoker: OR, 2.19; 95% CI, 1.24-3.74; P = .005, and sleep <6 vs ≥6 hours per day: OR, 2.11; 95% CI, 1.26-3.42; P = .003). In the analysis of all MS-detected monoclonal gammopathies, which are inclusive of M-proteins with concentrations of <0.2 g/L, elevated BMI and smoking were associated with all MS-positive cases. Findings suggest MS-detected monoclonal gammopathies are associated with a broader range of modifiable risk factors than what has been previously identified. This trial was registered at www.clinicaltrials.gov as #NCT03689595.
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Affiliation(s)
- David J. Lee
- Department of Medicine, Massachusetts General Hospital, Boston, MA
- Harvard Medical School, Boston, MA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Habib El-Khoury
- Harvard Medical School, Boston, MA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | | | - Jean-Baptiste Alberge
- Harvard Medical School, Boston, MA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Jacqueline Perry
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Maya I. Davis
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Erica Horowitz
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Robert Redd
- Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, MA
| | | | | | | | | | - Lorelei Mucci
- Harvard T.H. Chan School of Public Health, Boston, MA
| | - Timothy R. Rebbeck
- Division of Population Sciences, Dana-Farber Cancer Institute, Boston, MA
- Harvard T.H. Chan School of Public Health, Boston, MA
| | - Irene M. Ghobrial
- Harvard Medical School, Boston, MA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
- Center for Early Detection and Interception of Blood Cancers, Dana-Farber Cancer Institute, Boston, MA
| | - Catherine R. Marinac
- Harvard Medical School, Boston, MA
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
- Center for Early Detection and Interception of Blood Cancers, Dana-Farber Cancer Institute, Boston, MA
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Dhodapkar MV. Immune-Pathogenesis of Myeloma. Hematol Oncol Clin North Am 2024; 38:281-291. [PMID: 38195307 DOI: 10.1016/j.hoc.2023.12.011] [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] [Indexed: 01/11/2024]
Abstract
This research indicates that monoclonal gammopathy of undetermined significance (MGUS) and myeloma may stem from chronic immune activation and inflammation, causing immune dysfunction and spatial immune exclusion. As the conditions progress, a shift toward myeloma involves ongoing immune impairment, affecting both innate and adaptive immunity. Intriguingly, even in advanced myeloma stages, susceptibility to immune effector cells persists. This insight highlights the intricate interplay between immune responses and the development of these conditions, paving the way for potential therapeutic interventions targeting immune modulation in the management of MGUS and myeloma.
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Affiliation(s)
- Madhav V Dhodapkar
- Department of Hematology/Medical Oncology, Emory University, Winship Cancer Institute, 1365 Clifton Road, Atlanta, GA 30332, USA.
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Barnidge D, Troske D, North S, Wallis G, Perkins M, Harding S. Endogenous monoclonal immunoglobulins analyzed using the EXENT® solution and LC-MS. J Mass Spectrom Adv Clin Lab 2024; 32:31-40. [PMID: 38405412 PMCID: PMC10891330 DOI: 10.1016/j.jmsacl.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/27/2024] Open
Abstract
Introduction The EXENT® Solution, a fully automated system, is a recent advancement for identifying and quantifying monoclonal immunoglobulins in serum. It combines immunoprecipitation with MALDI-TOF mass spectrometry. Compared to gel-based methods, like SPEP and IFE, it has demonstrated the ability to detect monoclonal immunoglobulins in serum at lower levels. In this study, samples that tested negative using EXENT® were reflexed to LC-MS to determine if the more sensitive LC-MS method could identify monoclonal immunoglobulins missed by EXENT®. Objectives To assess whether monoclonal immunoglobulins that are not detected by EXENT® can be detected by LC-MS using a low flow LC system coupled to a Q-TOF mass spectrometer. Methods Samples obtained from patients confirmed to have multiple myeloma (MM) were diluted with pooled polyclonal human serum and analyzed using EXENT®. If a specific monoclonal immunoglobulin was not detected by EXENT®, the sample was then subjected to analysis by LC-MS. For the LC-MS analysis, the sample eluate, obtained after the MALDI-TOF MS spotting step, was collected and transferred to an autosampler tray for subsequent analysis using LC-MS. Conclusion LC-MS has the capability to detect monoclonal immunoglobulins that are no longer detected by EXENT®. Reflexing samples to LC-MS for analysis does not involve additional sample handling, allowing for a faster time-to-result compared to current approaches, such as Next-Generation Sequencing, Next-Generation Flow, and clonotypic peptide methods. Notably, LC-MS offers equivalent sensitivity in detecting these specific monoclonal immunoglobulins.
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Affiliation(s)
- David Barnidge
- The Binding Site, Part of ThermoFisher Scientific Research and Development Laboratory, 3777 40th Ave NW, Rochester, MN 55906, United States
| | - Derek Troske
- The Binding Site, Part of ThermoFisher Scientific Research and Development Laboratory, 3777 40th Ave NW, Rochester, MN 55906, United States
| | - Simon North
- The Binding Site, Part of ThermoFisher Scientific, The Binding Site Group Ltd, 8 Calthorpe Road Edgbaston, Birmingham, UK
| | - Gregg Wallis
- The Binding Site, Part of ThermoFisher Scientific, The Binding Site Group Ltd, 8 Calthorpe Road Edgbaston, Birmingham, UK
| | - Mark Perkins
- The Binding Site, Part of ThermoFisher Scientific, The Binding Site Group Ltd, 8 Calthorpe Road Edgbaston, Birmingham, UK
| | - Stephen Harding
- The Binding Site, Part of ThermoFisher Scientific, The Binding Site Group Ltd, 8 Calthorpe Road Edgbaston, Birmingham, UK
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Schmidt T, Gahvari Z, Callander NS. SOHO State of the Art Updates and Next Questions: Diagnosis and Management of Monoclonal Gammopathy of Undetermined Significance and Smoldering Multiple Myeloma. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2024:S2152-2650(24)00115-0. [PMID: 38641486 DOI: 10.1016/j.clml.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 03/14/2024] [Indexed: 04/21/2024]
Abstract
Monoclonal proteins are common, with a prevalence in the United States around 5% and the incidence increases with age. Although most patients are asymptomatic, the vast majority of cases are caused by a clonal plasma cell disorder. Monoclonal gammopathy of undetermined significance (MGUS) and smoldering multiple myeloma (SMM) are asymptomatic precursor conditions with variable risk of progression to multiple myeloma (MM). In recent years, significant progress has been made to better understand the factors that lead to the development of symptoms and progression to myeloma. In this review, we summarize the current diagnosis treatment guidelines for MGUS and SMM and highlight recent advances that underscore a shifting paradigm in the evaluation and management of plasma cell precursor conditions.
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Affiliation(s)
- Timothy Schmidt
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison WI
| | - Zhubin Gahvari
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison WI
| | - Natalie S Callander
- Division of Hematology, Medical Oncology, and Palliative Care, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison WI.
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Du J, Hu Z. Systematic review and meta-analysis of the clinical features of MGRS. BMC Nephrol 2024; 25:22. [PMID: 38229028 DOI: 10.1186/s12882-024-03458-5] [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: 08/06/2023] [Accepted: 01/04/2024] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND It is crucial to identify patients with monoclonal gammopathy of renal significance (MGRS) from those without MGRS but with monoclonal gammopathy and concomitant kidney diseases. However, there have been few studies with large sample sizes, and their findings were inconsistent. This study aimed to conduct a meta-analysis of MGRS to describe the general characteristics of MGRS and its predictive factors. METHODS Cohort or case-control studies published through December 2022 and related to clinicopathological features of MGRS were retrieved from the PubMed, Cochrane Library, Web of Science, Scopus, and Embase databases. Two researchers searched for studies that met the inclusion criteria. In the univariate analysis, fixed- or random- effects models were used to obtain pooled estimates of the weighted mean difference (WMD) and odds ratio (OR) for risk factors. In the multivariate analysis, the ORs of the independent risk factors from each study were pooled after transforming the original estimates. RESULTS The meta-analysis included six studies. Univariate analysis showed that the following variables were statistically significant in MGRS: age (WMD = 1.78, 95%CI 0.21-3.35), hypertension (OR = 0.54, 95%CI 0.4-0.73), diabetes (OR = 0.42, 95%CI 0.29-0.59), albumin (WMD = - 0.26, 95%CI - 0.38--0.14), urinary protein level (WMD = 0.76, 95%CI 0.31-1.2), urinary protein ≥ 1.5 g/d (OR = 1.98, 95%CI 1.46-2.68), lambda-chain value (WMD = 29.02, 95%CI 16.55-41.49), abnormal free light-chain ratio (OR = 4.16, 95%CI 1.65-10.47), bone marrow puncture rate (OR = 5.11, 95% CI 1.31-19.95), and abnormal bone marrow outcome rate (OR = 9.63, 95%CI 1.98-46.88). Multivariate analysis showed urinary protein ≥ 1.5 g/d (OR = 2.80, 95%CI 1.53-5.15) and an abnormal free light-chain ratio (OR = 6.98, 95%CI 4.10-11.91) were associated with predictors of MGRS. CONCLUSIONS Compared with non-MGRS patients with monoclonal gammopathy and concomitant kidney diseases, patients with MGRS were older, had fewer underlying diseases, more urinary protein, more abnormal free light-chain ratio, and more abnormal bone marrow results. Urinary protein ≥ 1.5 g/d and an abnormal free light-chain ratio were independent risk factors for MGRS.
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Affiliation(s)
- Jingxue Du
- Department of Nephrology, West China Hospital, Sichuan University, Guoxue Alley, 37#, Wuhou District, 610041, Chengdu, Sichuan Province, China
| | - Zhangxue Hu
- Department of Nephrology, West China Hospital, Sichuan University, Guoxue Alley, 37#, Wuhou District, 610041, Chengdu, Sichuan Province, China.
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Rögnvaldsson S, Thorsteinsdóttir S, Kristinsson SY. Screening in Multiple Myeloma and Its Precursors: Are We There Yet? Clin Chem 2024; 70:128-139. [PMID: 38175579 DOI: 10.1093/clinchem/hvad148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 06/05/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND Multiple myeloma (MM) is a hematological malignancy that develops over years from the asymptomatic precursors, monoclonal gammopathy of undetermined significance, and smoldering multiple myeloma. Recent evidence shows that by initiating treatment at an asymptomatic stage, outcomes in MM can be significantly improved. However, a vast majority of MM patients are diagnosed after the development of symptomatic end-organ damage and cannot reap the benefits of early treatment. The precursors of MM are easily detected by serum protein electrophoresis and free light chain assay of the serum, raising the question of whether population-based screening could detect MM at an asymptomatic stage and significantly expand the availability of early treatment in MM. Screening is a hallmark of care in many malignancies, and there are accepted criteria for when screening is appropriate. CONTENT Here we review the available relevant evidence for the introduction of screening and discuss whether screening for MM and its precursors fulfills these criteria. We also highlight gaps in our current knowledge, most notably a lack of data on the benefits and harms of screening and the lack of a defined target population. There are ongoing studies that may fill these critical gaps in the literature, but their results are still pending. SUMMARY Screening could lead to a paradigm shift in the care of patients with MM, but critical scientific questions need to be answered before screening of healthy individuals can be recommended. In short, we should not screen for MM and its precursors-yet.
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Affiliation(s)
- Sæmundur Rögnvaldsson
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Landspítali-The National University Hospital of Iceland, Reykjavík, Iceland
| | - Sigrún Thorsteinsdóttir
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Department of Hematology, Rigshospitalet, Copenhagen, Denmark
| | - Sigurður Yngvi Kristinsson
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Landspítali-The National University Hospital of Iceland, Reykjavík, Iceland
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Wang W, Li J, Yang Y, Chen F, Xu T, Wang P, Wang Y, Maihemaiti A, Ren L, Lan T, Li P, Zhou C, Liu P. Update on the outcome of M-protein screening program of multiple myeloma in China: A 7-year cohort study. Cancer Med 2023; 13:e6859. [PMID: 38133437 PMCID: PMC10807560 DOI: 10.1002/cam4.6859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 12/04/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND To improve the early detection rate of multiple myeloma (MM), the M-protein screening system has been performed in the hospital population at Zhongshan Hospital Fudan University since 2014, with electrophoretic-based monoclonal immunoglobulin (M-protein) screening integrated into the blood biochemistry panel. This study updated 7-year follow-up findings of MM patients diagnosed by screening-driven and symptom-driven approaches. METHODS The retrospective study compared the characteristics and outcomes of patients diagnosed through two patterns by reviewing the plasma cell disease database from January 2014 to October 2021. The screening-driven group included patients diagnosed through the screening system during workups of unrelated medical conditions or routine checkups. In contrast, patients who visited or were referred to the hematological department due to myeloma-related end-organ damage were categorized into the symptom-driven group. RESULTS There were 3,110,218 serum protein electrophoresis (SPEP) tests performed during 7 years, with 1.95% (60,609) patients yielding positive SPEP results. Of 911 confirmed MM cases (excluding concurrent amyloidosis), 366 were assigned to the screening-driven group, while 545 were to the symptom-driven group. Compared to the symptom-driven group, the screening group had more IgG subtypes, earlier International Stage System stages, fewer disease-related symptoms, lower ECOG scores, less extramedullary disease, a lower percentage of bone marrow plasma cells, and a lower level of lactate dehydrogenase. Frontline response results of two groups were similar. Patients detected through screening had a significantly improved median progression-free survival (PFS) than the symptom-driven group (62.2 vs. 24.9 months, p < 0.001, HR: 2.12, 95% CIs: 1.69-2.65), with median follow-ups of 32.6 and 27.4 months. Furthermore, the median overall survival (OS) was significantly longer in patients of the screening group (not reached vs. 62.3 months, p < 0.001, HR: 2.49, 95% CIs: 1.81-3.41). After being adjusted for well-acknowledged myeloma prognostic factors, the screening-driven diagnostic pattern remained an independent prognostic factor indicating improved PFS and OS in MM patients. CONCLUSION Routine M-protein screening for MM in the hospital population results in an earlier diagnosis and better patient outcomes.
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Affiliation(s)
- Wenjing Wang
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Jing Li
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Yang Yang
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Feifei Chen
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Tianhong Xu
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Pu Wang
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Yawen Wang
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Aziguli Maihemaiti
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Liang Ren
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Tianwei Lan
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Panpan Li
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Chi Zhou
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
| | - Peng Liu
- Department of HematologyZhongshan Hospital Fudan UniversityShanghaiChina
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Tentolouris A, Ntanasis-Stathopoulos I, Gavriatopoulou M, Andreadou I, Terpos E. Monoclonal Gammopathy of Undetermined Cardiovascular Significance; Current Evidence and Novel Insights. J Cardiovasc Dev Dis 2023; 10:484. [PMID: 38132652 PMCID: PMC10743961 DOI: 10.3390/jcdd10120484] [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: 10/14/2023] [Revised: 11/28/2023] [Accepted: 12/02/2023] [Indexed: 12/23/2023] Open
Abstract
Monoclonal gammopathy of undetermined significance (MGUS) is a premalignant condition characterized by the presence of low levels of a monoclonal protein in the serum and a low percentage of clonal plasma cells in the bone marrow. MGUS may progress to multiple myeloma or other plasma cell disorders at a rate of 1% annually. However, MGUS may also have adverse effects on the cardiovascular system independent of its malignant potential. Emerging data have shown that MGUS is associated with cardiovascular disease. The mechanisms underlying this association are not fully understood but may involve genetic abnormalities, vascular calcification, cryoglobulinemia, cold agglutinin disease, autoantibodies and the direct or indirect effects of the monoclonal protein on the vascular endothelium. Herein, we review current evidence in this field and we suggest that patients with MGUS may benefit from regular cardiovascular risk assessment to prevent severe cardiovascular complications, in parallel with close hematological follow-up to monitor potential disease progression.
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Affiliation(s)
- Anastasios Tentolouris
- First Department of Propaedeutic Internal Medicine and Diabetes Center, School of Medicine, National and Kapodistrian University of Athens, Laiko General Hospital, 11527 Athens, Greece;
| | - Ioannis Ntanasis-Stathopoulos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Alexandra General Hospital, 11528 Athens, Greece
| | - Maria Gavriatopoulou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Alexandra General Hospital, 11528 Athens, Greece
| | - Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Evangelos Terpos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Alexandra General Hospital, 11528 Athens, Greece
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Terashita M, Selamet U, Midha S, Nadeem O, Laubach J, Rennke HG, Murakami N. Clinical Outcomes of Monoclonal Gammopathy of Renal Significance Without Detectable Clones. Kidney Int Rep 2023; 8:2765-2777. [PMID: 38106576 PMCID: PMC10719651 DOI: 10.1016/j.ekir.2023.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/09/2023] [Accepted: 09/11/2023] [Indexed: 12/19/2023] Open
Abstract
Introduction Monoclonal gammopathy of renal significance (MGRS) is characterized by monoclonal immunoglobulin deposition in kidneys. However, monoclonal immunoglobulin and responsible clone(s) are not always detectable. Treatment response and kidney outcome of MGRS without detectable clones remain unclear. Methods In this single-center, retrospective cohort study, we identified MGRS without detectable clones from our biopsy repository between 2010 and 2022. We investigated the correlations between treatment regimens and kidney outcomes defined by proteinuria and estimated glomerular filtration rate (eGFR), and the impact of repeat kidney biopsy. Results Our study cohort included 29 cases (27 native kidney and 2 transplant allograft biopsies) of MGRS without detectable clones. At diagnosis, median serum creatinine was 1.8 mg/dl (interquartile range [IQR] 1.3-2.7), with proteinuria 4.6 g/gCr (IQR 2.3-7.9). Treatment regimens were variable: 6 (21%) received conservative therapy, 13 (45%) received plasma cell clone-directed therapy, 8 (28%) received lymphocytic clone-directed therapy, and 2 (7%) received nonclone-directed immunosuppressive therapy. Of 24 patients with proteinuria >0.5 g/gCr at diagnosis, 9 (38%) and 6 (25%) achieved complete response (CR) and partial response (PR), respectively. If interstitial fibrosis and tubular atrophy (IFTA) was >50% at the initial biopsy, less proportion of patients achieved CR. Six of 7 repeat biopsies showed progression of chronic changes (e.g., IFTA) but provided limited information on treatment response. Conclusion Treatment regimens and outcomes of MGRS without detectable clones were extremely variable. Repeat biopsy provided limited information to assess disease activity or the need for additional treatment. More sensitive tools are needed to detect clones and to assess treatment response.
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Affiliation(s)
- Maho Terashita
- Renal Division, Brigham and Women’s Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Division of Nephrology and Hypertension, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Umut Selamet
- Renal Division, Brigham and Women’s Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
| | - Shonali Midha
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Jerome Lipper Multiple Myeloma Center, Dana Farber Cancer Institute, Boston, Massachusetts, USA
| | - Omar Nadeem
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Jerome Lipper Multiple Myeloma Center, Dana Farber Cancer Institute, Boston, Massachusetts, USA
| | - Jacob Laubach
- Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical Oncology, Dana Farber Cancer Institute, Boston, Massachusetts, USA
- Jerome Lipper Multiple Myeloma Center, Dana Farber Cancer Institute, Boston, Massachusetts, USA
| | - Helmut G. Rennke
- Harvard Medical School, Boston, Massachusetts, USA
- Pathology Department, Brigham and Women’s Hospital. Boston, Massachusetts, USA
| | - Naoka Murakami
- Renal Division, Brigham and Women’s Hospital, Boston, Massachusetts, USA
- Harvard Medical School, Boston, Massachusetts, USA
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11
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Cárdenas MC, García-Sanz R, Puig N, Pérez-Surribas D, Flores-Montero J, Ortiz-Espejo M, de la Rubia J, Cruz-Iglesias E. Recommendations for the study of monoclonal gammopathies in the clinical laboratory. A consensus of the Spanish Society of Laboratory Medicine and the Spanish Society of Hematology and Hemotherapy. Part I: Update on laboratory tests for the study of monoclonal gammopathies. Clin Chem Lab Med 2023; 61:2115-2130. [PMID: 37477188 DOI: 10.1515/cclm-2023-0326] [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: 03/30/2023] [Accepted: 05/29/2023] [Indexed: 07/22/2023]
Abstract
Monoclonal gammopathies (MG) are characterized by the proliferation of plasma cells that produce identical abnormal immunoglobulins (intact or some of their subunits). This abnormal immunoglobulin component is called monoclonal protein (M-protein), and is considered a biomarker of proliferative activity. The identification, characterization and measurement of M-protein is essential for the management of MG. We conducted a systematic review of the different tests and measurement methods used in the clinical laboratory for the study of M-protein in serum and urine, the biochemistry and hematology tests necessary for clinical evaluation, and studies in bone marrow, peripheral blood and other tissues. This review included literature published between 2009 and 2022. The paper discusses the main methodological characteristics and limitations, as well as the purpose and clinical value of the different tests used in the diagnosis, prognosis, monitoring and assessment of treatment response in MG. Included are methods for the study of M-protein, namely electrophoresis, measurement of immunoglobulin levels, serum free light chains, immunoglobulin heavy chain/light chain pairs, and mass spectrometry, and for the bone marrow examination, morphological analysis, cytogenetics, molecular techniques, and multiparameter flow cytometry.
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Affiliation(s)
- María C Cárdenas
- Department of Clinical Analysis, Hospital Clinico San Carlos, Madrid, Spain
- Protein Commission, Spanish Society of Laboratory Medicine (SEQCML), Barcelona, Spain
| | - Ramón García-Sanz
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), CIBERONC and Center for Cancer Research-IBMCC (University of Salamanca-CSIC), Salamanca, Spain
- Spanish Society of Hematology and Hemotherapy (SEHH), Madrid, Spain
| | - Noemí Puig
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), CIBERONC and Center for Cancer Research-IBMCC (University of Salamanca-CSIC), Salamanca, Spain
- Spanish Society of Hematology and Hemotherapy (SEHH), Madrid, Spain
| | - David Pérez-Surribas
- Laboratori Pasteur, Andorra La Vella, Andorra
- Protein Commission, Spanish Society of Laboratory Medicine (SEQCML), Barcelona, Spain
| | - Juan Flores-Montero
- Hematology Department, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), CIBERONC and Center for Cancer Research-IBMCC (University of Salamanca-CSIC), Salamanca, Spain
- Spanish Society of Hematology and Hemotherapy (SEHH), Madrid, Spain
| | - María Ortiz-Espejo
- Department of Clinical Analysis, Hospital Universitario Marqués de Valdecilla, Santander, Spain
- Protein Commission, Spanish Society of Laboratory Medicine (SEQCML), Barcelona, Spain
| | - Javier de la Rubia
- Hematology Department, Hospital Universitario y Politécnico La Fe & Universidad Católica de Valencia, Instituto de Investigación Sanitaria La Fe Centro de Investigación Biomédica en Red de Cáncer, CIBERONC CB16/12/00284, Instituto de Salud Carlos III, Valencia, Spain
- Spanish Society of Hematology and Hemotherapy (SEHH), Madrid, Spain
| | - Elena Cruz-Iglesias
- Department of Laboratory Medicine, Osakidetza Basque Health Service, Basurto University Hospital, Bilbao, Spain
- Protein Commission, Spanish Society of Laboratory Medicine (SEQCML), Barcelona, Spain
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12
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Hermouet S, Bigot-Corbel E, Harb J. Determination of the target of monoclonal immunoglobulins: a novel diagnostic tool for individualized MGUS therapy, and prevention and therapy of smoldering and multiple myeloma. Front Immunol 2023; 14:1253363. [PMID: 38022528 PMCID: PMC10644846 DOI: 10.3389/fimmu.2023.1253363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/11/2023] [Indexed: 12/01/2023] Open
Abstract
Subsets of patients diagnosed with a monoclonal gammopathy of undetermined significance (MGUS), smoldering multiple myeloma (SMM) or multiple myeloma (MM), present with a monoclonal immunoglobulin (Ig) specific for an infectious pathogen, including hepatitis C and B viruses (HCV, HBV), Helicobacter pylori and several Herpesviruses. Such cases are likely initiated by infection, since in the context of HCV- or HBV-infected patients, antiviral therapy can lead to the disappearance of antigenic stimulation, control of clonal plasma cells, and reduced or suppressed monoclonal Ig production. Complete remission has been obtained with anti-HCV therapy in refractory MM with a HCV-specific monoclonal Ig, and antiviral treatments significantly improved the probability of survival of MM patients infected with HCV or HBV prior to the diagnosis of MM. Monoclonal Igs may also target glucolipids, particularly glucosylsphingosine (GlcSph), and GlcSph-reducing therapy can lead to complete remission in SMM and MM patients presenting with a GlcSph-specific monoclonal Ig. The present review describes the importance of determining the target of the monoclonal Ig of MGUS, SMM and MM patients, and discusses the efficacy of target-reducing treatments in the management of MGUS, SMM and MM cases who present with a monoclonal Ig reactive against a treatable infectious pathogen or GlcSph.
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Affiliation(s)
- Sylvie Hermouet
- Nantes Université, INSERM, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302, Nantes, France
- Laboratoire d’Hématologie, CHU Nantes, Nantes, France
| | - Edith Bigot-Corbel
- Nantes Université, INSERM, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302, Nantes, France
- Laboratoire de Biochimie, CHU Nantes, Nantes, France
| | - Jean Harb
- Laboratoire de Biochimie, CHU Nantes, Nantes, France
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13
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Alejo E, Puertas B, Mateos MV. [Monoclonal gammopathy of uncertain significance]. Med Clin (Barc) 2023; 161:217-224. [PMID: 37330390 DOI: 10.1016/j.medcli.2023.05.006] [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: 03/08/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/19/2023]
Abstract
Monoclonal gammopathy of uncertain significance is a premalignant plasma cell neoplasm with a high prevalence in the population over 50 years of age and an annual risk of progression of 1%. Multiple recent studies have led to advances in understanding both the pathogenesis of these disorders and their risk of progression to other diseases. Patients require lifelong follow-up, and a multidisciplinary and risk-adapted approach is essential. In recent years, an increasing number of entities associated with a paraprotein, known as clinically significant monoclonal gammopathies, have been recognized.
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Affiliation(s)
- Elena Alejo
- Hospital Universitario de Salamanca/Instituto de Investigación Biomédica de Salamanca (IBSAL)/Centro Investigación del Cáncer-IBMCC (USAL-CSIC), Salamanca, España
| | - Borja Puertas
- Hospital Universitario de Salamanca/Instituto de Investigación Biomédica de Salamanca (IBSAL)/Centro Investigación del Cáncer-IBMCC (USAL-CSIC), Salamanca, España
| | - María-Victoria Mateos
- Hospital Universitario de Salamanca/Instituto de Investigación Biomédica de Salamanca (IBSAL)/Centro Investigación del Cáncer-IBMCC (USAL-CSIC), Salamanca, España.
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14
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Rögnvaldsson S, Kristinsson SY. The force awakens, but questions remain: The future of MGUS. Br J Haematol 2023; 202:722-724. [PMID: 37278330 DOI: 10.1111/bjh.18904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 05/24/2023] [Accepted: 05/24/2023] [Indexed: 06/07/2023]
Affiliation(s)
- Saemundur Rögnvaldsson
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
- Landspítali-The National University Hospital of Iceland, Reykjavik, Iceland
| | - Sigurður Yngvi Kristinsson
- Faculty of Medicine, University of Iceland, Reykjavik, Iceland
- Landspítali-The National University Hospital of Iceland, Reykjavik, Iceland
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15
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Semenzato G, Ghobrial IM, Ghia P. Monoclonal B-cell lymphocytosis, monoclonal gammopathy of undetermined significance, and T-cell clones of uncertain significance: are these premalignant conditions sharing a common identity? Lancet Haematol 2023; 10:e549-e556. [PMID: 37407144 DOI: 10.1016/s2352-3026(23)00086-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 07/07/2023]
Abstract
Monoclonal B-cell lymphocytosis, monoclonal gammopathy of undetermined significance, and T-cell clones of uncertain significance are three premalignant conditions characterised by the presence of small clonal cell expansions in individuals without symptoms or signs that distinguish the related overt malignancies (chronic lymphocytic leukaemia, multiple myeloma, and T-cell large granular lymphocytic leukaemia). As most individuals with these precursor states never progress to malignancies, considerable interest has arisen in comprehending the steps involved in the progression to malignancy, providing more accurate models to investigate potential mechanisms of early blood cancer identification, prevention, and, possibly, intervention. Single-cell technologies and recent progress in high-throughput sequencing and multiomics approaches have contributed to a better definition of the pathophysiological mechanisms of these premalignant conditions, moving our knowledge in the field forward. In this Viewpoint, we analyse the seemingly shared biological trajectories in these precursor haematological malignancies in search of common pathogenetic events. In particular, we address the issue of interactions between expanding clones and their immune ecosystem, offering new clues that might prompt innovative ideas and inspire further investigations to understand the cellular and molecular dynamics entailing progression into overt malignant disease. The relationships between the non-leukaemic microenvironmental cells and the leukaemic counterpart, and the primary drivers of their initial clonal expansion, represent shared biologies that suggest a common identity among the premalignant conditions considered in this Viewpoint.
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Affiliation(s)
- Gianpietro Semenzato
- Haematology Section, Department of Medicine, University of Padova, Padua, Italy; Veneto Institute of Molecular Medicine, Padua, Italy.
| | | | - Paolo Ghia
- Vita-Salute San Raffaele University, Milan, Italy; IRCCS San Raffaele Hospital, Milan, Italy
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16
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Chen LY, Drayson M, Bunce C, Ramasamy K. Monoclonal gammopathy of increasing significance: time to screen? Haematologica 2023; 108:1476-1486. [PMID: 36373250 PMCID: PMC10233333 DOI: 10.3324/haematol.2022.281802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 10/28/2022] [Indexed: 11/11/2022] Open
Abstract
Monoclonal gammopathy (MG) is a frequently detected clonal B-cell or plasma-cell disorder. Importantly, every multiple myeloma (MM) case is preceded by MG. Although clinical algorithms now allow earlier treatment of patients with biomarkers of malignancy before MM-induced tissue damage (CRAB) occurs, most patients are still diagnosed late. It is important to revisit how MG should be managed in clinical practice and whether screening is required. As the prevalence of MG and other medical co-morbidities both rise with increasing age, the degree of contribution of MG to disease states other than malignant progression is often unclear. This can lead to monitoring lapses and under recognition of the organ dysfunction that can occur with monoclonal gammopathy of clinical significance (MGCS). Therefore, models of progression to MM and/or MGCS require further refinement. While MG is currently detected incidentally, a case for screening has been made with ongoing studies in this area. Screening has the potential benefit of earlier detection and prevention of both MGCS and delayed MM presentations, but important drawbacks include the psychosocial impact on individuals and resource burden on healthcare services. MG terminology should transition alongside our increasing understanding of the condition and genomic characterization that have already begun to revise the MG nomenclature. The biology of MG has been poorly understood and is often inferred from the biology of MM, which is unhelpful. We review the literature and case for MG screening in this paper. In particular, we highlight areas that require focus to establish screening for MG.
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Affiliation(s)
- Lucia Y Chen
- Oxford University Hospitals NHS Foundation Trust
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17
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Gatta F. How my training helps me to address health disparities in multiple myeloma. Nature 2023:10.1038/d41586-023-01587-9. [PMID: 37165230 DOI: 10.1038/d41586-023-01587-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
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18
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Mohyuddin GR, Chakraborty R, Cliff ERS. The promise and harms of screening for plasma cell dyscrasias. Br J Haematol 2023; 200:704-707. [PMID: 36626939 DOI: 10.1111/bjh.18634] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 01/12/2023]
Abstract
In this perspective, we highlight both the promise and harms of screening for plasma cell dyscrasias, as well as the implications of the use of mass spectrometry for diagnosing monoclonal gammopathy of undetermined significance in routine practice.
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Affiliation(s)
- Ghulam Rehman Mohyuddin
- Division of Hematology and Hematological Malignancies, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA
| | - Rajshekhar Chakraborty
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, New York, USA
| | - Edward R Scheffer Cliff
- Program on Regulation, Therapeutics and Law, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
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19
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Gkalea V, Fotiou D, Dimopoulos MA, Kastritis E. Monoclonal Gammopathy of Thrombotic Significance. Cancers (Basel) 2023; 15:cancers15020480. [PMID: 36672429 PMCID: PMC9856365 DOI: 10.3390/cancers15020480] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 01/04/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
The current review provides an overview of the thrombotic risk observed in patients with MG who do not otherwise require treatment. We discuss clinical and biomarker studies that highlight the heterogenous hemostatic profile observed in these patients and how knowledge has evolved over the past 20 years. Biomarker studies suggest shared biologic features between multiple myeloma and monoclonal gammopathy of undetermined significance (MGUS), which involves both hypercoagulability and platelet activation. Hemostatic abnormalities identified in MGUS patients cannot be translated into clinical practice as they lack correlation to clinical events. The prothrombotic phenotype of MGUS patients has not been ascertained yet, but novel data on coagulation markers are promising. We also review rare conditions associated with the thrombogenic properties of the monoclonal protein that predispose to arterial, venous or microthrombotic events and demonstrate that the M-protein can be linked to clinically significant thrombotic events. Cryoglobulinemia, cryofibrinogenemia, cryo-crystaloglobulinemia and MG-related antiphospholipid syndrome are reviewed. We propose the new umbrella term "monoclonal gammopathy of thrombotic significance" (MGTS) to refer to significant, recurrent thrombotic events in patients with MGUS that provide a rationale for targeting the underlying plasma cell clone. Identifying MGUS patients at high risk for thrombotic events is currently a challenge.
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20
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Mikhael J, Bhutani M, Cole CE. Multiple Myeloma for the Primary Care Provider: A Practical Review to Promote Earlier Diagnosis Among Diverse Populations. Am J Med 2023; 136:33-41. [PMID: 36150517 DOI: 10.1016/j.amjmed.2022.08.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/24/2022] [Accepted: 08/29/2022] [Indexed: 12/13/2022]
Abstract
Multiple myeloma is the second most common hematologic malignancy in the United States and the most common hematologic malignancy among Blacks/African Americans. Delay in diagnosis is common and has been associated with inferior disease-free survival and increased rates of myeloma-related complications. Despite a roughly 2-times higher risk of multiple myeloma, diagnostic delay appears more common, and improvements in 5-year survival rates have been slower among Blacks/African Americans than their White counterparts. When patient symptoms and basic laboratory findings are suggestive of multiple myeloma, the primary care provider should initiate extended laboratory work-up that includes serum protein electrophoresis, serum immunoglobulin free light chain assay, and serum immunofixation. Heightened awareness within high-risk populations such as Blacks/African Americans may help to eliminate racial disparities in the diagnosis and treatment of multiple myeloma.
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Affiliation(s)
- Joseph Mikhael
- Applied Cancer Research and Drug Discovery Division, Translational Genomics Research Institute (TGen), City of Hope Cancer Center, Phoenix, Ariz; International Myeloma Foundation, Studio City, Calif.
| | - Manisha Bhutani
- Department of Hematologic Oncology and Blood Disorders, Division of Plasma Cell Disorders, Atrium Health/Wake Forest Baptist, Levine Cancer Institute, Charlotte, NC
| | - Craig E Cole
- Department of Medicine, Michigan State University-Karmanos Cancer Institute at McLaren Greater Lansing, Lansing
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21
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Ho M, Kourelis T. The burden of myeloma: novel approaches to disease assessment. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2022; 2022:356-362. [PMID: 36485143 PMCID: PMC9820131 DOI: 10.1182/hematology.2022000348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Novel therapies in multiple myeloma (MM) have increased the rates of conventional complete remission (CR) in patients. However, patients in CR can have highly heterogeneous outcomes. Novel and more sensitive methods of assessing residual disease burden after therapy will help prognosticate this group better and, ideally, allow individualized therapy adjustments based on response depth in the future. Here, we review novel bone marrow, peripheral blood, and imaging methods for assessing myeloma burden and discuss the opportunities and limitations of incorporating these in everyday clinical practice.
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Affiliation(s)
- Matthew Ho
- Department of Internal Medicine, Division of Hematology, Mayo Clinic, Rochester, MN
| | - Taxiarchis Kourelis
- Department of Internal Medicine, Division of Hematology, Mayo Clinic, Rochester, MN
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22
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Monoclonal Gammopathies of Clinical Significance: A Critical Appraisal. Cancers (Basel) 2022; 14:cancers14215247. [PMID: 36358666 PMCID: PMC9659226 DOI: 10.3390/cancers14215247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/15/2022] [Accepted: 10/24/2022] [Indexed: 11/26/2022] Open
Abstract
Simple Summary Monoclonal gammopathy of clinical significance (MGCS) refers to a recently coined term describing a complex and heterogeneous group of nonmalignant monoclonal gammopathies. These patients are characterized by the presence of a commonly small clone and the occurrence of symptoms that may be associated with the clone or with the monoclonal protein through diverse mechanisms. This is an evolving, challenging, and rapidly changing field. Patients are classified according to the key organ or system involved, with kidneys, skin, nerves, and eyes being the most frequently affected. However, multiorgan involvement may be the most relevant clinical feature at the presentation or during the course. This review delves into the definition, history, differential diagnosis, classification, prognosis, and treatment of this group of entities by analyzing the evidence accumulated to date from a critical perspective. Abstract Monoclonal gammopathies of clinical significance (MGCSs) represent a group of diseases featuring the association of a nonmalignant B cells or plasma cells clone, the production of an M-protein, and singularly, the existence of organ damage. They present a current framework that is difficult to approach from a practical clinical perspective. Several points should be addressed in order to move further toward a better understanding. Overall, these entities are only partially included in the international classifications of diseases. Its definition and classification remain ambiguous. Remarkably, its real incidence is unknown, provided that a diagnostic biopsy is mandatory in most cases. In fact, amyloidosis AL is the final diagnosis in a large percentage of patients with renal significance. On the other hand, many of these young entities are syndromes that are based on a dynamic set of diagnostic criteria, challenging a timely diagnosis. Moreover, a specific risk score for progression is lacking. Despite the key role of the clinical laboratory in the diagnosis and prognosis of these patients, information about laboratory biomarkers is limited. Besides, the evidence accumulated for many of these entities is scarce. Hence, national and international registries are stimulated. In particular, IgM MGCS deserves special attention. Until now, therapy is far from being standardized, and it should be planned on a risk and patient-adapted basis. Finally, a comprehensive and coordinated multidisciplinary approach is needed, and specific clinical trials are encouraged.
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23
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Kapoor P, Rajkumar SV. Cardiovascular Associations With Monoclonal Gammopathy of Undetermined Significance. JACC CardioOncol 2022; 4:323-325. [PMID: 36213348 PMCID: PMC9537066 DOI: 10.1016/j.jaccao.2022.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Affiliation(s)
| | - S. Vincent Rajkumar
- Address for correspondence: Dr S. Vincent Rajkumar, Division of Hematology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota 55905, USA. @VincentRK
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24
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Sklavenitis-Pistofidis R, Getz G, Ghobrial I, Papaioannou M. Multiple Myeloma With Amplification of Chr1q: Therapeutic Opportunity and Challenges. Front Oncol 2022; 12:961421. [PMID: 35912171 PMCID: PMC9331166 DOI: 10.3389/fonc.2022.961421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple myeloma (MM) is an incurable plasma cell malignancy with a heterogeneous genetic background. Each MM subtype may have its own therapeutic vulnerabilities, and tailored therapy could improve outcomes. However, the cumulative frequency of druggable targets across patients is very low, which has precluded the widespread adoption of precision therapy for patients with MM. Amplification of the long arm of chromosome 1 (Amp1q) is one of the most frequent genetic alterations observed in patients with MM, and its presence predicts inferior outcomes in the era of proteasome inhibitors and immunomodulatory agents. Therefore, establishing precision medicine for MM patients with Amp1q stands to benefit a large portion of patients who are otherwise at higher risk of relapse. In this article, we review the prevalence and clinical significance of Amp1q in patients with MM, its pathogenesis and therapeutic vulnerabilities, and discuss the opportunities and challenges for Amp1q-targeted therapy.
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Affiliation(s)
- Romanos Sklavenitis-Pistofidis
- Harvard Medical School, Boston, MA, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, United States
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
- Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Gad Getz
- Harvard Medical School, Boston, MA, United States
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
- Department of Pathology, Massachusetts General Hospital, Boston, MA, United States
| | - Irene Ghobrial
- Harvard Medical School, Boston, MA, United States
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, United States
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
- *Correspondence: Maria Papaioannou, ; Irene Ghobrial,
| | - Maria Papaioannou
- Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Hematology Unit, 1st Internal Medicine Department, AHEPA University Hospital, Thessaloniki, Greece
- *Correspondence: Maria Papaioannou, ; Irene Ghobrial,
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25
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D'Souza A, Costa LJ. MGIP, MGUS, and the PROMISE of meaning in small things. THE LANCET HAEMATOLOGY 2022; 9:e315-e317. [DOI: 10.1016/s2352-3026(22)00101-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 11/25/2022]
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