1
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Abdelbaky SB, Giacopelli B, Rabe KG, Yamaguchi K, Wu YZ, Yan H, Shanafelt TD, Parikh SA, Ding W, Hampel PJ, Brown S, Cerhan JR, Vachon CM, Kay NE, Hanson CA, Parker AS, Braggio E, Slager SL, Oakes CC. Prediction of outcomes for high-count monoclonal B lymphocytosis using an epigenetic and immunogenetic signature. Blood 2024; 143:1752-1757. [PMID: 38194687 PMCID: PMC11103082 DOI: 10.1182/blood.2023022180] [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: 08/15/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/11/2024] Open
Abstract
ABSTRACT Monoclonal B-cell lymphocytosis (MBL) progresses to chronic lymphocytic leukemia (CLL) requiring therapy at 1% to 5% per year. Improved prediction of progression would greatly benefit individuals with MBL. Patients with CLL separate into 3 distinct epigenetic subtypes (epitypes) with high prognostic significance, and recently the intermediate epitype has been shown to be enriched for high-risk immunoglobulin lambda variable (IGLV) 3-21 rearrangements, impacting outcomes for these patients. Here, we employed this combined strategy to generate the epigenetic and light chain immunoglobulin (ELCLV3-21) signature to classify 219 individuals with MBL. The ELCLV3-21 high-risk signature distinguished MBL individuals with a high probability of progression (39.9% and 71.1% at 5 and 10 years, respectively). ELCLV3-21 improved the accuracy of predicting time to therapy for individuals with MBL compared with other established prognostic indicators, including the CLL international prognostic index (c-statistic, 0.767 vs 0.668, respectively). Comparing ELCLV3-21 risk groups in MBL vs a cohort of 226 patients with CLL revealed ELCLV3-21 high-risk individuals with MBL had significantly shorter time to therapy (P = .003) and reduced overall survival (P = .03) compared with ELCLV3-21 low-risk individuals with CLL. These results highlight the power of the ELCLV3-21 approach to identify individuals with a higher likelihood of adverse clinical outcome and may provide a more accurate approach to classify individuals with small B-cell clones.
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MESH Headings
- Humans
- Lymphocytosis/genetics
- Lymphocytosis/diagnosis
- Lymphocytosis/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Leukemia, Lymphocytic, Chronic, B-Cell/mortality
- Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis
- Female
- Male
- B-Lymphocytes/immunology
- B-Lymphocytes/pathology
- Aged
- Middle Aged
- Prognosis
- Epigenesis, Genetic
- Aged, 80 and over
- Adult
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Affiliation(s)
- Salma B. Abdelbaky
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
- The Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH
| | - Brian Giacopelli
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
- The Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH
| | - Kari G. Rabe
- Division of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, MN
| | - Kyoko Yamaguchi
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
- The Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH
| | - Yue-Zhong Wu
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
- The Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH
| | - Huihuang Yan
- Division of Computational Biology, Mayo Clinic, Rochester, MN
| | - Tait D. Shanafelt
- Division of Hematology, Department of Medicine, Stanford University, Stanford, CA
| | | | - Wei Ding
- Division of Hematology, Mayo Clinic, Rochester, MN
| | | | - Sochilt Brown
- Department of Hematology and Oncology, Mayo Clinic, Phoenix, AZ
| | | | | | - Neil E. Kay
- Division of Hematology, Mayo Clinic, Rochester, MN
- Department of Immunology, Mayo Clinic, Rochester, MN
| | - Curtis A. Hanson
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | - Esteban Braggio
- Department of Hematology and Oncology, Mayo Clinic, Phoenix, AZ
| | - Susan L. Slager
- Division of Computational Biology, Mayo Clinic, Rochester, MN
- Division of Hematology, Mayo Clinic, Rochester, MN
| | - Christopher C. Oakes
- Division of Hematology, Department of Internal Medicine, The Ohio State University, Columbus, OH
- The Comprehensive Cancer Center, The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH
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2
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Ohmoto A, Fuji S. Prospects of early therapeutic interventions for indolent adult T-cell leukemia/lymphoma based on the chronic lymphocytic leukemia progression model. Blood Rev 2023; 60:101057. [PMID: 36828681 DOI: 10.1016/j.blre.2023.101057] [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: 01/17/2023] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023]
Abstract
Adult T-cell leukemia/lymphoma (ATLL) has aggressive clinical behaviors, and improving its prognosis is a great challenge. A disease progression model from asymptomatic human T-cell leukemia virus type 1 carrier to aggressive-type ATLL has been proposed, and indolent ATLL comprising a smoldering or favorable chronic type is located at the midpoint. Even the most favorable smoldering type has a 4-year overall survival rate of <60%. Although watchful waiting is pervasive in patients with indolent ATLL, early therapeutic intervention is discussed among hematologists. Indolent ATLL was once termed T-cell-derived chronic lymphocytic leukemia (CLL). Unlike indolent ATLL, several molecular-targeted agents at the initial treatment have dramatically improved CLL prognosis. Recent studies on CLL have revealed a similar progression model involving premalignant monoclonal B-cell lymphocytosis (MBL). In particular, individuals with high-count MBL have an increased lymphoma risk. Considering the unsatisfactory long-term prognosis of indolent ATLL, further treatment strategies, including precision medicine, are warranted.
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MESH Headings
- Adult
- Humans
- Leukemia-Lymphoma, Adult T-Cell/diagnosis
- Leukemia-Lymphoma, Adult T-Cell/etiology
- Leukemia-Lymphoma, Adult T-Cell/therapy
- Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis
- Leukemia, Lymphocytic, Chronic, B-Cell/etiology
- Leukemia, Lymphocytic, Chronic, B-Cell/therapy
- Prognosis
- Antineoplastic Agents
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Affiliation(s)
- Akihiro Ohmoto
- Department of Medical Oncology, Cancer Institute Hospital of Japanese Foundation for Cancer Research, Tokyo 1358550, Japan; Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Shigeo Fuji
- Department of Hematology, Osaka International Cancer Institute, Osaka, 5418567, Japan.
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3
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Kleinstern G, Slager SL. The inherited genetic contribution and polygenic risk score for risk of CLL and MBL: a narrative review. Leuk Lymphoma 2023; 64:788-798. [PMID: 36576061 PMCID: PMC10121840 DOI: 10.1080/10428194.2022.2157215] [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: 11/04/2022] [Revised: 12/04/2022] [Accepted: 12/06/2022] [Indexed: 12/29/2022]
Abstract
Chronic lymphocytic leukemia (CLL) is a neoplasm of B-cells in the blood and monoclonal B-cell lymphocytosis (MBL) is a precursor state to CLL. This narrative review provides an overview of the genetic studies that identified 43 common variants associated with risk of CLL among individuals of European ancestry. Emerging studies found that ∼50% of these variants are associated with MBL risk. Moreover, the polygenic risk score (PRS) calculated from these CLL variants has been shown to be a robust predictor for both CLL and MBL risk among European ancestry individuals but a weak predictor among African ancestry individuals. By summarizing these genetic studies, we conclude that additional studies are needed in other race/ethnic populations to identify race-specific susceptibility variants, that functional studies are needed to validate the biological mechanisms of the variants, and that the clinical utility of the PRS is limited until preventive strategies for CLL are developed.
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Affiliation(s)
- Geffen Kleinstern
- School of Public Health, University of Haifa, Haifa, Israel
- Division of Computational Biology, Mayo Clinic, Rochester, MN, USA
| | - Susan L Slager
- Division of Computational Biology, Mayo Clinic, Rochester, MN, USA
- Division of Hematology, Mayo Clinic, Rochester, MN, USA
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4
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Chronic lymphocytic leukemia treatment algorithm 2022. Blood Cancer J 2022; 12:161. [PMID: 36446777 PMCID: PMC9708674 DOI: 10.1038/s41408-022-00756-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 12/03/2022] Open
Abstract
The treatment landscape for patients with chronic lymphocytic leukemia (CLL) has changed considerably with the introduction of very effective oral targeted therapies (such as Bruton tyrosine kinase inhibitors and venetoclax) and next-generation anti-CD20 monoclonal antibodies (such as obinutuzumab). These agents lead to improved outcomes in patients with CLL, even among those with high-risk features, such as del17p13 or TP53 mutation and unmutated immunoglobulin heavy chain (IGHV) genes. Selecting the right treatment for the right patient requires consideration of disease characteristics and prior treatment sequence, as well as patient preferences and comorbidities. The CLL-International Prognostic Index (CLL-IPI) remains the best-validated tool in predicting the time to first therapy among previously untreated patients, which guides selection for early intervention efforts. This review summarizes our current approach to the management of CLL, right from the time of diagnosis through relapsed disease.
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5
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Monoclonal B-cell Lymphocytosis in the Bone Marrow: Revisiting the Criteria for Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma. Hum Pathol 2022; 125:108-116. [DOI: 10.1016/j.humpath.2022.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/19/2022] [Indexed: 11/22/2022]
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6
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Galigalidou C, Zaragoza-Infante L, Iatrou A, Chatzidimitriou A, Stamatopoulos K, Agathangelidis A. Understanding Monoclonal B Cell Lymphocytosis: An Interplay of Genetic and Microenvironmental Factors. Front Oncol 2021; 11:769612. [PMID: 34858849 PMCID: PMC8631769 DOI: 10.3389/fonc.2021.769612] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/26/2021] [Indexed: 11/13/2022] Open
Abstract
The term monoclonal B-cell lymphocytosis (MBL) describes the presence of a clonal B cell population with a count of less than 5 × 109/L and no symptoms or signs of disease. Based on the B cell count, MBL is further classified into 2 distinct subtypes: 'low-count' and 'high-count' MBL. High-count MBL shares a series of biological and clinical features with chronic lymphocytic leukemia (CLL), at least of the indolent type, and evolves to CLL requiring treatment at a rate of 1-2% per year, whereas 'low-count' MBL seems to be distinct, likely representing an immunological rather than a pre-malignant condition. That notwithstanding, both subtypes of MBL can carry 'CLL-specific' genomic aberrations such as cytogenetic abnormalities and gene mutations, yet to a much lesser extent compared to CLL. These findings suggest that such aberrations are mostly relevant for disease progression rather than disease onset, indirectly pointing to microenvironmental drive as a key contributor to the emergence of MBL. Understanding microenvironmental interactions is therefore anticipated to elucidate MBL ontogeny and, most importantly, the relationship between MBL and CLL.
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Affiliation(s)
- Chrysi Galigalidou
- Institute of Applied Biosciences (INAB), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece.,Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece
| | - Laura Zaragoza-Infante
- Institute of Applied Biosciences (INAB), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece.,Hematology Department, University General Hospital of Thessaloniki AHEPA, Thessaloniki, Greece
| | - Anastasia Iatrou
- Institute of Applied Biosciences (INAB), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece
| | - Anastasia Chatzidimitriou
- Institute of Applied Biosciences (INAB), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece.,Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Kostas Stamatopoulos
- Institute of Applied Biosciences (INAB), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece.,Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Andreas Agathangelidis
- Institute of Applied Biosciences (INAB), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece.,Department of Biology, School of Science, National and Kapodistrian University of Athens, Athens, Greece
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7
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Slager SL, Lanasa MC, Marti GE, Achenbach SJ, Camp NJ, Abbasi F, Kay NE, Vachon CM, Cerhan JR, Johnston JB, Call TG, Rabe KG, Kleinstern G, Boddicker NJ, Norman AD, Parikh SA, Leis JF, Banerji V, Brander DM, Glenn M, Ferrajoli A, Curtin K, Braggio E, Shanafelt TD, McMaster ML, Weinberg JB, Hanson CA, Caporaso NE. Natural history of monoclonal B-cell lymphocytosis among relatives in CLL families. Blood 2021; 137:2046-2056. [PMID: 33512457 PMCID: PMC8057266 DOI: 10.1182/blood.2020006322] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/14/2020] [Indexed: 12/21/2022] Open
Abstract
Chronic lymphocytic lymphoma (CLL) has one of the highest familial risks among cancers. Monoclonal B-cell lymphocytosis (MBL), the precursor to CLL, has a higher prevalence (13%-18%) in families with 2 or more members with CLL compared with the general population (5%-12%). Although, the rate of progression to CLL for high-count MBLs (clonal B-cell count ≥500/µL) is ∼1% to 5%/y, no low-count MBLs have been reported to progress to date. We report the incidence and natural history of MBL in relatives from CLL families. In 310 CLL families, we screened 1045 relatives for MBL using highly sensitive flow cytometry and prospectively followed 449 of them. MBL incidence was directly age- and sex-adjusted to the 2010 US population. CLL cumulative incidence was estimated using Kaplan-Meier survival curves. At baseline, the prevalence of MBL was 22% (235/1045 relatives). After a median follow-up of 8.1 years among 449 relatives, 12 individuals progressed to CLL with a 5-year cumulative incidence of 1.8%. When considering just the 139 relatives with low-count MBL, the 5-year cumulative incidence increased to 5.7%. Finally, 264 had no MBL at baseline, of whom 60 individuals subsequently developed MBL (2 high-count and 58 low-count MBLs) with an age- and sex-adjusted incidence of 3.5% after a median of 6 years of follow-up. In a screening cohort of relatives from CLL families, we reported progression from normal-count to low-count MBL to high-count MBL to CLL, demonstrating that low-count MBL precedes progression to CLL. We estimated a 1.1% annual rate of progression from low-count MBL, which is in excess of that in the general population.
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Affiliation(s)
- Susan L Slager
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Mark C Lanasa
- Department of Medicine, Duke University, Duke Cancer Institute, Durham, NC
| | - Gerald E Marti
- Lymphoid Malignancies Section, Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD
| | - Sara J Achenbach
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Nicola J Camp
- Department of Internal Medicine, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT
| | - Fatima Abbasi
- Center for Biologics Research and Evaluation, Food and Drug Administration, Silver Springs, MD
| | - Neil E Kay
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Celine M Vachon
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - James R Cerhan
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - James B Johnston
- Department of Internal Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Research Institute in Oncology and Hematology, CancerCare Manitoba, Winnipeg, MB, Canada
| | - Timothy G Call
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Kari G Rabe
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | | | | | - Aaron D Norman
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN
| | - Sameer A Parikh
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Jose F Leis
- Department of Hematology and Oncology, Mayo Clinic, Phoenix, AZ
| | - Versha Banerji
- Department of Internal Medicine, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
- Research Institute in Oncology and Hematology, CancerCare Manitoba, Winnipeg, MB, Canada
- Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Danielle M Brander
- Department of Medicine, Duke University, Duke Cancer Institute, Durham, NC
| | - Martha Glenn
- Department of Internal Medicine, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT
| | - Alessandra Ferrajoli
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX
| | - Karen Curtin
- Department of Internal Medicine, Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT
| | - Esteban Braggio
- Department of Hematology and Oncology, Mayo Clinic, Phoenix, AZ
| | - Tait D Shanafelt
- Division of Hematology, Department of Medicine, Stanford University School of Medicine, Palo Alto, CA
| | - Mary L McMaster
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - J Brice Weinberg
- Department of Medicine, Duke University, Duke Cancer Institute, Durham, NC
- Department of Immunology, Duke University Medical Center, Durham, NC
- Durham Veterans Affairs Medical Center, Durham, NC; and
| | - Curtis A Hanson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Neil E Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD
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8
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Lamb MJ, Smith A, Painter D, Kane E, Bagguley T, Newton R, Howell D, Cook G, de Tute R, Rawstron A, Patmore R, Roman E. Health impact of monoclonal gammopathy of undetermined significance (MGUS) and monoclonal B-cell lymphocytosis (MBL): findings from a UK population-based cohort. BMJ Open 2021; 11:e041296. [PMID: 33619185 PMCID: PMC7903106 DOI: 10.1136/bmjopen-2020-041296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To examine mortality and morbidity patterns before and after premalignancy diagnosis in individuals with monoclonal gammopathy of undetermined significance (MGUS) and monoclonal B-cell lymphocytosis (MBL) and compare their secondary healthcare activity to that of the general population. DESIGN Population-based patient cohort, within which each patient is matched at diagnosis to 10 age-matched and sex-matched individuals from the general population. Both cohorts are linked to nationwide information on deaths, cancer registrations and Hospital Episode Statistics. SETTING The UK's Haematological Malignancy Research Network, which has a catchment population of around 4 million served by 14 hospitals and a central diagnostic laboratory. PARTICIPANTS All patients newly diagnosed during 2009-2015 with MGUS (n=2193) or MBL (n=561) and their age and sex-matched comparators (n=27 538). MAIN OUTCOME MEASURES Mortality and hospital inpatient and outpatient activity in the 5 years before and 3 years after diagnosis. RESULTS Individuals with MGUS experienced excess morbidity in the 5 years before diagnosis and excess mortality and morbidity in the 3 years after diagnosis. Increased rate ratios (RRs) were evident for nearly all clinical specialties, the largest, both before and after diagnosis, being for nephrology (before RR=4.29, 95% CI 3.90 to 4.71; after RR=13.8, 95% CI 12.8 to 15.0) and rheumatology (before RR=3.40, 95% CI 3.18 to 3.63; after RR=5.44, 95% CI 5.08 to 5.83). Strong effects were also evident for endocrinology, neurology, dermatology and respiratory medicine. Conversely, only marginal increases in mortality and morbidity were evident for MBL. CONCLUSIONS MGUS and MBL are generally considered to be relatively benign, since most individuals with monoclonal immunoglobulins never develop a B-cell malignancy or any other monoclonal protein-related organ/tissue-related disorder. Nonetheless, our findings offer strong support for the view that in some individuals, monoclonal gammopathy has the potential to cause systemic disease resulting in wide-ranging organ/tissue damage and excess mortality.
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Affiliation(s)
- Maxine Je Lamb
- Department of Health Sciences, University of York, York, UK
| | | | - Daniel Painter
- Department of Health Sciences, University of York, York, UK
| | - Eleanor Kane
- Department of Health Sciences, University of York, York, UK
| | | | - Robert Newton
- Department of Health Sciences, University of York, York, UK
- Epidemiology and Prevention Programme, Uganda Virus Research Institute, Entebbe, Uganda
| | - Debra Howell
- Department of Health Sciences, University of York, York, UK
| | - Gordon Cook
- Haematology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Ruth de Tute
- Haematological Malignancy Diagnostic Service (HMDS), Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Andrew Rawstron
- Haematological Malignancy Diagnostic Service (HMDS), Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Russell Patmore
- Haematology, Hull University Teaching Hospitals NHS Trust, Hull, UK
| | - Eve Roman
- Department of Health Sciences, University of York, York, UK
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9
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Abstract
Patients with chronic lymphocytic leukemia can be divided into three categories: those who are minimally affected by the problem, often never requiring therapy; those that initially follow an indolent course but subsequently progress and require therapy; and those that from the point of diagnosis exhibit an aggressive disease necessitating treatment. Likewise, such patients pass through three phases: development of the disease, diagnosis, and need for therapy. Finally, the leukemic clones of all patients appear to require continuous input from the exterior, most often through membrane receptors, to allow them to survive and grow. This review is presented according to the temporal course that the disease follows, focusing on those external influences from the tissue microenvironment (TME) that support the time lines as well as those internal influences that are inherited or develop as genetic and epigenetic changes occurring over the time line. Regarding the former, special emphasis is placed on the input provided via the B-cell receptor for antigen and the C-X-C-motif chemokine receptor-4 and the therapeutic agents that block these inputs. Regarding the latter, prominence is laid upon inherited susceptibility genes and the genetic and epigenetic abnormalities that lead to the developmental and progression of the disease.
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Affiliation(s)
- Nicholas Chiorazzi
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York 11030, USA
| | - Shih-Shih Chen
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, New York 11030, USA
| | - Kanti R. Rai
- The Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York 11549, USA
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10
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Kleinstern G, O'Brien DR, Li X, Tian S, Kabat BF, Rabe KG, Norman AD, Yan H, Vachon CM, Boddicker NJ, Call TG, Parikh SA, Bruins L, Bonolo de Campos C, Leis JF, Shanafelt TD, Ding W, Cerhan JR, Kay NE, Slager SL, Braggio E. Tumor mutational load predicts time to first treatment in chronic lymphocytic leukemia (CLL) and monoclonal B-cell lymphocytosis beyond the CLL international prognostic index. Am J Hematol 2020; 95:906-917. [PMID: 32279347 DOI: 10.1002/ajh.25831] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/21/2020] [Accepted: 04/08/2020] [Indexed: 01/01/2023]
Abstract
Next-generation sequencing identified about 60 genes recurrently mutated in chronic lymphocytic leukemia (CLL). We examined the additive prognostic value of the total number of recurrently mutated CLL genes (i.e., tumor mutational load [TML]) or the individually mutated genes beyond the CLL international prognostic index (CLL-IPI) in newly diagnosed CLL and high-count monoclonal B-cell lymphocytosis (HC MBL). We sequenced 59 genes among 557 individuals (112 HC MBL/445 CLL) in a multi-stage design, to estimate hazard ratios (HR) and 95% confidence intervals (CI) for time-to-first treatment (TTT), adjusted for CLL-IPI and sex. TML was associated with shorter TTT in the discovery and validation cohorts, with a combined estimate of continuous HR = 1.27 (CI:1.17-1.39, P = 2.6 × 10-8 ; c-statistic = 0.76). When stratified by CLL-IPI, the association of TML with TTT was stronger and validated within low/intermediate risk (combined HR = 1.54, CI:1.37-1.72, P = 7.0 × 10-14 ). Overall, 80% of low/intermediate CLL-IPI cases with two or more mutated genes progressed to require therapy within 5 years, compared to 24% among those without mutations. TML was also associated with shorter TTT in the HC MBL cohort (HR = 1.53, CI:1.12-2.07, P = .007; c-statistic = 0.71). TML is a strong prognostic factor for TTT independent of CLL-IPI, especially among low/intermediate CLL-IPI risk, and a better predictor than any single gene. Mutational screening at early stages may improve risk stratification and better predict TTT.
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Affiliation(s)
- Geffen Kleinstern
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Daniel R. O'Brien
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Xing Li
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Shulan Tian
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Brian F. Kabat
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Kari G. Rabe
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Aaron D. Norman
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Huihuang Yan
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Celine M. Vachon
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | | | | | | | - Laura Bruins
- Division of Hematology /OncologyMayo Clinic Scottsdale Arizona USA
| | | | - Jose F. Leis
- Division of Hematology /OncologyMayo Clinic Scottsdale Arizona USA
| | - Tait D. Shanafelt
- Department of Medicine, Division of HematologyStanford University Stanford California USA
| | - Wei Ding
- Division of HematologyMayo Clinic Rochester Minnesota USA
| | - James R. Cerhan
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Neil E. Kay
- Division of HematologyMayo Clinic Rochester Minnesota USA
| | - Susan L. Slager
- Department of Health Sciences ResearchMayo Clinic Rochester Minnesota USA
| | - Esteban Braggio
- Division of Hematology /OncologyMayo Clinic Scottsdale Arizona USA
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11
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Yoo IY, Bang SH, Lim DJ, Kim SJ, Kim K, Kim HJ, Kim SH, Cho D. Prevalence and Immunophenotypic Characteristics of Monoclonal B-Cell Lymphocytosis in Healthy Korean Individuals With Lymphocytosis. Ann Lab Med 2020; 40:409-413. [PMID: 32311854 PMCID: PMC7169624 DOI: 10.3343/alm.2020.40.5.409] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 11/13/2019] [Accepted: 03/20/2020] [Indexed: 11/19/2022] Open
Abstract
Epidemiological studies of monoclonal B-cell lymphocytosis (MBL) have been conducted in limited geographical regions. Little is known about the prevalence of MBL in Asia. We investigated the prevalence and immunophenotypic characteristics of MBL in Koreans who had idiopathic lymphocytosis (lymphocyte count >4.0×109/L) and were ≥40 years of age. A total of 105 leftover peripheral blood samples met these criteria among those from 73,727 healthy individuals who visited the Health Promotion Center, Samsung Medical Center, Korea, from June 2018 to August 2019. The samples were analyzed using eight-color flow cytometry with the following monoclonal antibodies: CD45, CD5, CD10, CD19, CD20, CD23, and kappa and lambda light chains. The overall prevalence of MBL in the study population was 2.9% (3/105); there was one case of chronic lymphocytic leukemia (CLL)-like MBL (CD5+CD23+), one case of atypical CLL-like MBL (CD5+CD23−), and one case of CD5−MBL with a lambda restriction pattern. This is the first study on the MBL prevalence in an East Asian population, and it reveals a relatively low prevalence of MBL in healthy Korean individuals with lymphocytosis.
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Affiliation(s)
- In Young Yoo
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Hoan Bang
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dae Jin Lim
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seok Jin Kim
- Division of Hematology and Oncology, Department of Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyunga Kim
- Statistics and Data Center, Research Institute for Future Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Digital Health, Samsung Advanced Institute for Health Sciences and Technology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Jin Kim
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sun-Hee Kim
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Duck Cho
- Department of Laboratory Medicine and Genetics, Sungkyunkwan University School of Medicine, Seoul, Korea
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12
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Hampel PJ, Ding W, Call TG, Rabe KG, Kenderian SS, Witzig TE, Muchtar E, Leis JF, Chanan-Khan AA, Koehler AB, Fonder AL, Schwager SM, Slager SL, Shanafelt TD, Kay NE, Parikh SA. Rapid disease progression following discontinuation of ibrutinib in patients with chronic lymphocytic leukemia treated in routine clinical practice. Leuk Lymphoma 2019; 60:2712-2719. [PMID: 31014142 DOI: 10.1080/10428194.2019.1602268] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We identified all patients with chronic lymphocytic leukemia at Mayo Clinic treated with ibrutinib outside the context of a clinical trial; timing and reasons for discontinuation were ascertained, as were symptoms, exam and radiographic findings, and laboratory changes following discontinuation. Of 202 patients who received ibrutinib, 52 discontinued therapy (estimated 1- and 2-year risk of discontinuation 18% and 28%, respectively). The most common reasons for discontinuation were toxicity (56%) and progression of disease (32%, including Richter's transformation in 15%). Rapid progression of disease within 4 weeks after discontinuation was observed in 9/36 (25%) patients with adequate records for review, mostly in those stopping ibrutinib for disease progression (n = 8) rather than toxicity (n = 1). This was evident by sudden worsening of disease-related symptoms (n = 9), exam/radiographic changes (n = 7), and laboratory changes (n = 8). An estimated one in every three patients discontinued ibrutinib by 2 years, with 25% developing rapid disease progression afterwards.
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Affiliation(s)
- Paul J Hampel
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Wei Ding
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Timothy G Call
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Kari G Rabe
- Department of Health Sciences Research, Division of Biomedical Statistics & Informatics, Mayo Clinic, Rochester, MN, USA
| | - Saad S Kenderian
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Thomas E Witzig
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Eli Muchtar
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Jose F Leis
- Department of Hematology and Oncology, Mayo Clinic, Phoenix, AZ, USA
| | | | - Amber B Koehler
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Amie L Fonder
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Susan M Schwager
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Susan L Slager
- Department of Health Sciences Research, Division of Biomedical Statistics & Informatics, Mayo Clinic, Rochester, MN, USA
| | - Tait D Shanafelt
- Department of Hematology, Stanford University Medical Center, Stanford, CA, USA
| | - Neil E Kay
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
| | - Sameer A Parikh
- Department of Medicine, Division of Hematology, Mayo Clinic, Rochester, MN, USA
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13
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Angelillo P, Capasso A, Ghia P, Scarfò L. Monoclonal B-cell lymphocytosis: Does the elderly patient need a specialistic approach? Eur J Intern Med 2018; 58:2-6. [PMID: 30268574 DOI: 10.1016/j.ejim.2018.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/10/2018] [Indexed: 12/13/2022]
Abstract
Monoclonal B-cell lymphocytosis (MBL) is defined by the presence of a monoclonal B-cell population in the peripheral blood (PB) at a concentration of <5 × 109/l and no signs or symptoms of a lymphoproliferative disorder. In around 75% of cases, the immunophenotype of the clonal B-cell expansions is superimposable to that of chronic lymphocytic leukemia (CLL), thus defined "CLL-like". Other cases may coexpress CD19, CD5, bright CD20, and lack CD23 ("atypical CLL"), while others are CD5-negative ("non-CLL"). Beside the immunophenotypic profile, a key distinction is based on the B-cell count, stratifying the MBL category in low (<0.5 × 109/l) or high-count (≥0.5 × 109/l). Low-count (LC) MBL is recognized in general population studies and it is not associated with lymphocytosis. High-count (HC) MBL is identified during the clinical work-up for lymphocytosis and carries a risk of progression to CLL requiring therapy of 1-2% per year in most series, warranting clinical monitoring over time. At the time of MBL diagnosis, the key point is the careful evaluation and exclusion of differential diagnoses. After the initial workup, the follow-up at a referral center by a hematologist would be desirable as, in addition to the obvious risk of progression to clinically relevant CLL, the appropriate management of MBL individuals should take into account the risk of developing infections, other cancers and autoimmune disorders. For those cases who indeed bear a risk, though limited, of clinical consequences, such as the majority of HC-MBL cases, current evidences suggest that they may benefit from a tailored and specialized approach.
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Affiliation(s)
- Piera Angelillo
- Strategic Research Program on CLL, Università Vita-Salute San Raffaele and IRCCS Ospedale San Raffaele, Milano, Italy
| | - Antonella Capasso
- Strategic Research Program on CLL, Università Vita-Salute San Raffaele and IRCCS Ospedale San Raffaele, Milano, Italy
| | - Paolo Ghia
- Strategic Research Program on CLL, Università Vita-Salute San Raffaele and IRCCS Ospedale San Raffaele, Milano, Italy.
| | - Lydia Scarfò
- Strategic Research Program on CLL, Università Vita-Salute San Raffaele and IRCCS Ospedale San Raffaele, Milano, Italy
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14
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Parikh SA. Chronic lymphocytic leukemia treatment algorithm 2018. Blood Cancer J 2018; 8:93. [PMID: 30283014 PMCID: PMC6170426 DOI: 10.1038/s41408-018-0131-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/22/2018] [Accepted: 09/17/2018] [Indexed: 11/08/2022] Open
Abstract
The treatment landscape for patients with chronic lymphocytic leukemia (CLL) has changed considerably with the introduction of very effective oral targeted therapies (such as ibrutinib, idelalisib, and venetoclax), and next-generation anti-CD20 monoclonal antibodies (such as obinutuzumab). These agents lead to improved outcomes in CLL, even among patients with high-risk features, such as del17p13 or TP53 mutation and unmutated immunoglobulin heavy chain (IGHV) genes. Each of these treatments is associated with a unique toxicity profile; in the absence of randomized data, the choice of one type of treatment over another depends on the co-morbidities of the patient. Chemoimmunotherapy still plays an important role in the management of previously untreated CLL patients, particularly among young fit patients who have standard risk FISH profile and mutated IGHV genes. Richter's transformation of CLL remains a difficult complication to treat, although therapy with programmed death 1 inhibitors such as pembrolizumab and nivolumab has shown impressive responses in a subset of patients. Our ability to risk stratify CLL patients continues to evolve; the CLL-International Prognostic Index (CLL-IPI) is the best validated tool in predicting time to first therapy among previously untreated patients. This review summarizes the current approach to risk stratification and management of CLL patients.
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MESH Headings
- Algorithms
- Biomarkers, Tumor
- Combined Modality Therapy
- Disease Management
- Disease Progression
- Disease Susceptibility
- Drug Resistance, Neoplasm
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis
- Leukemia, Lymphocytic, Chronic, B-Cell/etiology
- Leukemia, Lymphocytic, Chronic, B-Cell/mortality
- Leukemia, Lymphocytic, Chronic, B-Cell/therapy
- Practice Guidelines as Topic
- Prognosis
- Recurrence
- Treatment Outcome
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