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García-Sanz R, Hunter ZR, Poulain S, Varettoni M, Owen RG. New developments in the diagnosis and characterization of Waldenström's macroglobulinemia. Expert Rev Hematol 2023; 16:835-847. [PMID: 37905549 DOI: 10.1080/17474086.2023.2270779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 10/10/2023] [Indexed: 11/02/2023]
Abstract
INTRODUCTION Waldenström's macroglobulinemia (WM) is defined as a lymphoplasmacytic lymphoma (LPL) with immunoglobulin M (IgM) monoclonal gammopathy and morphologic evidence of bone marrow infiltration by LPL. Immunophenotyping and genotyping provide a firm pathological basis for diagnosis and are particularly valuable in differential diagnosis between WM and related diseases. Emerging technologies in mutational analysis present new opportunities, but challenges remain around standardization of methodologies and reporting of mutational data across centers. AREAS COVERED The review provides an overview of the diagnosis of WM, with a particular focus on the role of immunophenotyping and genotyping. EXPERT OPINION Demonstration of LPL with a bone marrow biopsy is essential to reach a definitive diagnosis of WM. However, MYD88L265P and a typical WM immunophenotypic profile are valuable for the differential diagnosis of WM and related diseases, such as marginal zone lymphoma, multiple myeloma, and chronic lymphocytic leukemia. These methodologies must be utilized across centers and with appropriate standards followed in the evaluation and reporting of sensitivities and specificities. The diagnostic and/or prognostic value of mutations in genes such as CXCR4 and TP53 that are currently not routinely evaluated in the diagnosis of WM should be explored.
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Affiliation(s)
- Ramón García-Sanz
- Hematology Department, University Hospital of Salamanca, IBSAL, CIBERONC, Centro de Investigación del Cáncer-IBMCC (USAL-CSIC), Salamanca, Spain
| | - Zachary R Hunter
- Bing Center for Waldenström's Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Stéphanie Poulain
- Service d'Hématologie Cellulaire, CHRU de Lille, University of Lille, Lille, France
| | - Marzia Varettoni
- Division of Hematology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Roger G Owen
- Haematological Malignancy Diagnostic Service, St James's University Hospital, Leeds, UK
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Drandi D, Ferrante M, Borriero M, Ferrero S. MYD88 L265P Mutation Detection by ddPCR: Recommendations for Screening and Minimal Residual Disease Monitoring : ddPCR for Highly Sensitive Detection of MYD88 L265P Mutation. Methods Mol Biol 2023; 2621:57-72. [PMID: 37041440 DOI: 10.1007/978-1-0716-2950-5_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
MYD88L265P is a gain-of-function mutation, arising from the missense alteration c.794T>C, that frequently occurs in B-cell malignancies such as Waldenstrom macroglobulinemia and less frequently in IgM monoclonal gammopathy of undetermined significance (IgM-MGUS) or other lymphomas. MYD88L265P has been recognized as a relevant diagnostic flag, but also as a valid prognostic and predictive biomarker, as well as an investigated therapeutic target. Up until now, allele-specific quantitative PCR (ASqPCR) has been widely used for MYD88L265P detection providing a higher level of sensitivity than Sanger sequencing. However, the recently developed droplet digital PCR (ddPCR) shows a deeper sensitivity, compared to ASqPCR, that is necessary for screening low infiltrated samples. Actually, ddPCR could represent an improvement in daily laboratory practice since it allows mutation detection in unselected tumor cells, allowing to bypass the time-consuming and costly B-cell selection procedure. ddPCR accuracy has been recently proved to be suitable also for mutation detection in "liquid biopsy" samples that might be used as a noninvasive and patient-friendly alternative to bone marrow aspiration especially during the disease monitoring. The relevance of MYD88L265P, both in daily management of patients and in prospective clinical trials investigating the efficacy of novel agents, makes crucial to find a sensitive, accurate, and reliable molecular technique for mutation detection. Here, we propose a protocol for MYD88L265P detection by ddPCR.
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Affiliation(s)
- Daniela Drandi
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, Torino, Italy.
| | - Martina Ferrante
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, Torino, Italy
| | - Michela Borriero
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, Torino, Italy
| | - Simone Ferrero
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, Torino, Italy
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Falini B, Martino G, Lazzi S. A comparison of the International Consensus and 5th World Health Organization classifications of mature B-cell lymphomas. Leukemia 2023; 37:18-34. [PMID: 36460764 PMCID: PMC9883170 DOI: 10.1038/s41375-022-01764-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 12/03/2022]
Abstract
Several editions of the World Health Organization (WHO) classifications of lympho-hemopoietic neoplasms in 2001, 2008 and 2017 served as the international standard for diagnosis. Since the 4th WHO edition, here referred as WHO-HAEM4, significant clinico-pathological, immunophenotypic and molecular advances have been made in the field of lymphomas, contributing to refining diagnostic criteria of several diseases, to upgrade entities previously defined as provisional and to identify new entities. This process has resulted in two recent classifying proposals of lymphoid neoplasms, the International Consensus Classification (ICC) and the 5th edition of the WHO classification (WHO-HAEM5). In this paper, we review and compare the two classifications in terms of diagnostic criteria and entity definition, with focus on mature B-cell neoplasms. The main aim is to provide a tool to facilitate the work of pathologists, hematologists and researchers involved in the diagnosis and treatment of lymphomas.
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Affiliation(s)
- Brunangelo Falini
- Institute of Hematology and CREO, University of Perugia, Perugia, Italy.
| | - Giovanni Martino
- Institute of Hematology and CREO, University of Perugia, Perugia, Italy
| | - Stefano Lazzi
- Institute of Pathology, Department of Medical Biotechnology, University of Siena, Siena, Italy
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4
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Campo E, Jaffe ES, Cook JR, Quintanilla-Martinez L, Swerdlow SH, Anderson KC, Brousset P, Cerroni L, de Leval L, Dirnhofer S, Dogan A, Feldman AL, Fend F, Friedberg JW, Gaulard P, Ghia P, Horwitz SM, King RL, Salles G, San-Miguel J, Seymour JF, Treon SP, Vose JM, Zucca E, Advani R, Ansell S, Au WY, Barrionuevo C, Bergsagel L, Chan WC, Cohen JI, d'Amore F, Davies A, Falini B, Ghobrial IM, Goodlad JR, Gribben JG, Hsi ED, Kahl BS, Kim WS, Kumar S, LaCasce AS, Laurent C, Lenz G, Leonard JP, Link MP, Lopez-Guillermo A, Mateos MV, Macintyre E, Melnick AM, Morschhauser F, Nakamura S, Narbaitz M, Pavlovsky A, Pileri SA, Piris M, Pro B, Rajkumar V, Rosen ST, Sander B, Sehn L, Shipp MA, Smith SM, Staudt LM, Thieblemont C, Tousseyn T, Wilson WH, Yoshino T, Zinzani PL, Dreyling M, Scott DW, Winter JN, Zelenetz AD. The International Consensus Classification of Mature Lymphoid Neoplasms: a report from the Clinical Advisory Committee. Blood 2022; 140:1229-1253. [PMID: 35653592 PMCID: PMC9479027 DOI: 10.1182/blood.2022015851] [Citation(s) in RCA: 574] [Impact Index Per Article: 287.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 05/18/2022] [Indexed: 11/20/2022] Open
Abstract
Since the publication of the Revised European-American Classification of Lymphoid Neoplasms in 1994, subsequent updates of the classification of lymphoid neoplasms have been generated through iterative international efforts to achieve broad consensus among hematopathologists, geneticists, molecular scientists, and clinicians. Significant progress has recently been made in the characterization of malignancies of the immune system, with many new insights provided by genomic studies. They have led to this proposal. We have followed the same process that was successfully used for the third and fourth editions of the World Health Organization Classification of Hematologic Neoplasms. The definition, recommended studies, and criteria for the diagnosis of many entities have been extensively refined. Some categories considered provisional have now been upgraded to definite entities. Terminology for some diseases has been revised to adapt nomenclature to the current knowledge of their biology, but these modifications have been restricted to well-justified situations. Major findings from recent genomic studies have impacted the conceptual framework and diagnostic criteria for many disease entities. These changes will have an impact on optimal clinical management. The conclusions of this work are summarized in this report as the proposed International Consensus Classification of mature lymphoid, histiocytic, and dendritic cell tumors.
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Affiliation(s)
- Elias Campo
- Haematopathology Section, Hospital Clínic of Barcelona, Institut d'Investigaciones Biomèdiques August Pi I Sunyer (IDIBAPS), University of Barcelona, Centro de Investigación Biomédica en Red de Cancer (CIBERONC), Barcelona, Spain
| | - Elaine S Jaffe
- Hematopathology Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - James R Cook
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
| | - Steven H Swerdlow
- Department of Pathology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, PA
| | | | - Pierre Brousset
- Department of Pathology, Institut Universitaire du Cancer de Toulouse-Oncopole, and Laboratoire d'Excellence Toulouse Cancer, Toulouse, France
| | - Lorenzo Cerroni
- Department of Dermatology, Medical University of Graz, Graz, Austria
| | - Laurence de Leval
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Stefan Dirnhofer
- Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Ahmet Dogan
- Laboratory of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Andrew L Feldman
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Falko Fend
- Institute of Pathology and Neuropathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
| | | | - Philippe Gaulard
- Department of Pathology, University Hospital Henri Mondor, Assistance Publique-Hôpitaux de Paris (AP-HP), Créteil, France
- Mondor Institute for Biomedical Research, INSERM U955, Faculty of Medicine, University of Paris-Est Créteil, Créteil, France
| | - Paolo Ghia
- Strategic Research Program on Chronic Lymphocytic Leukemia, Division of Experimental Oncology, IRCCS Ospedale San Raffaele and Università Vita-Salute San Raffaele, Milan, Italy
| | - Steven M Horwitz
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Rebecca L King
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Gilles Salles
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Jesus San-Miguel
- Clínica Universidad de Navarra, Centro de Investigación Médica Aplicada, Instituto de Investigación Sanitaria de Navarra, CIBERONC, Pamplona, Spain
| | - John F Seymour
- Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, VIC, Australia
| | | | - Julie M Vose
- Division of Hematology-Oncology, Department of Internal Medicine, University of Nebraska Medical Center, University of Nebraska, Omaha, NE
| | - Emanuele Zucca
- Oncology Institute of Southern Switzerland, Ente Ospedaliero Cantonale, and Institute of Oncology Research, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Ranjana Advani
- Stanford Cancer Center, Blood and Marrow Transplant Program, Stanford University, Stanford, CA
| | - Stephen Ansell
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN
| | - Wing-Yan Au
- Blood-Med Clinic, Hong Kong, People's Republic of China
| | - Carlos Barrionuevo
- Department of Pathology, Instituto Nacional de Enfermedades Neoplásicas, Faculty of Medicine, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | - Leif Bergsagel
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Phoenix, AZ
| | - Wing C Chan
- Department of Pathology, City of Hope National Medical Center, Duarte, CA
| | - Jeffrey I Cohen
- Medical Virology Section, Laboratory of Infectious Diseases, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Bethesda, MD
| | - Francesco d'Amore
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Andrew Davies
- Cancer Research UK Centre, Centre for Cancer Immunology, Faculty of Medicine, Southampton General Hospital, University of Southampton, Southampton, United Kingdom
| | - Brunangelo Falini
- Institute of Hematology and Center for Hemato-Oncology Research, Hospital of Perugia, University of Perugia , Perugia, Italy
| | - Irene M Ghobrial
- Dana-Farber Cancer Institute, Boston, MA
- Harvard Medical School, Harvard University, Boston, MA
| | - John R Goodlad
- National Health Service Greater Glasgow and Clyde, Glasgow, United Kingdom
| | - John G Gribben
- Department of Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Eric D Hsi
- Department of Pathology, Wake Forest School of Medicine, Wake Forest University, Winston-Salem, NC
| | - Brad S Kahl
- Oncology Division, Washington University School of Medicine, Washington University in St. Louis, St. Louis, MO
| | - Won-Seog Kim
- Hematology and Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Shaji Kumar
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN
| | | | - Camille Laurent
- Department of Pathology, Institut Universitaire du Cancer de Toulouse-Oncopole, and Laboratoire d'Excellence Toulouse Cancer, Toulouse, France
| | - Georg Lenz
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
| | - John P Leonard
- Weill Department of Medicine, Weill Medical College, Cornell University, New York, NY
| | - Michael P Link
- Department of Pediatrics, Division of Pediatric Hematology-Oncology, Stanford University School of Medicine, Stanford University, Stanford, CA
| | - Armando Lopez-Guillermo
- Department of Hematology, Hospital Clínic, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - Maria Victoria Mateos
- Department of Hematology, Hospital Universitario de Salamanca, Instituto de Investigación Biomédica de Salamanca, Centro de Investigación del Cancer, Universidad de Salamanca, Salamanca, Spain
| | - Elizabeth Macintyre
- Laboratoire d'Onco-Hématologie, AP-HP, Hôpital Necker-Enfants Malades, Université de Paris Cité and Institut Necker-Enfants Malades, Paris, France
| | - Ari M Melnick
- Division of Hematology and Oncology, Weill Medical College, Cornell University, New York, NY
| | - Franck Morschhauser
- Department of Hematology, Centre Hospitalier Universitaire de Lille, University Lille, Lille, France
| | - Shigeo Nakamura
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Marina Narbaitz
- Department of Pathology, Instituto de Investigaciones Hematológicas, Academia Nacional de Medicina and Fundacion para combatir la leucemia (FUNDALEU), Buenos Aires, Argentina
| | - Astrid Pavlovsky
- Fundación para Combatir la Leucemia (FUNDALEU), Centro de Hematología Pavlovsky, Buenos Aires, Argentina
| | - Stefano A Pileri
- Haematopathology Division, IRCCS, Istituto Europeo di Oncologia, Milan, Italy
| | - Miguel Piris
- Jiménez Díaz Foundation University Hospital, Universidad Autónoma de Madrid, Madrid, Spain
| | - Barbara Pro
- Division of Hematology and Oncology, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Vincent Rajkumar
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Steven T Rosen
- Beckman Research Institute, and Department of Hematology & Hematopoietic Cell Transplantation, City of Hope National Medical Center, Duarte, CA
| | - Birgitta Sander
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Laurie Sehn
- Centre for Lymphoid Cancer, British Columbia Cancer Agency, Vancouver, BC, Canada
| | | | - Sonali M Smith
- Section of Hematology/Oncology, University of Chicago, Chicago, IL
| | - Louis M Staudt
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Catherine Thieblemont
- Service Hémato-Oncologie, AP-HP, Hôpital Saint-Louis, Paris, France
- DMU-DHI, Université de Paris-Paris Diderot, Paris, France
| | - Thomas Tousseyn
- Department of Pathology, Universitair Ziekenhuis Leuven Hospitals, Leuven, Belgium
| | - Wyndham H Wilson
- Lymphoid Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Tadashi Yoshino
- Department of Pathology, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Pier-Luigi Zinzani
- Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia "Seragnoli", Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy
| | - Martin Dreyling
- Department of Medicine III, Ludwig-Maximilians-University Hospital, Munich, Germany
| | - David W Scott
- Centre for Lymphoid Cancer, British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Jane N Winter
- Feinberg School of Medicine, Northwestern University, Chicago, IL; and
| | - Andrew D Zelenetz
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
- Weill Medical College, Cornell University, New York, NY
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Drandi D, Decruyenaere P, Ferrante M, Offner F, Vandesompele J, Ferrero S. Nucleic Acid Biomarkers in Waldenström Macroglobulinemia and IgM-MGUS: Current Insights and Clinical Relevance. Diagnostics (Basel) 2022; 12:diagnostics12040969. [PMID: 35454017 PMCID: PMC9028641 DOI: 10.3390/diagnostics12040969] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 12/13/2022] Open
Abstract
Waldenström Macroglobulinemia (WM) is an indolent lymphoplasmacytic lymphoma, characterized by the production of excess immunoglobulin M monoclonal protein. WM belongs to the spectrum of IgM gammopathies, ranging from asymptomatic IgM monoclonal gammopathy of undetermined significance (IgM-MGUS), through IgM-related disorders and asymptomatic WM to symptomatic WM. In recent years, its complex genomic and transcriptomic landscape has been extensively explored, hereby elucidating the biological mechanisms underlying disease onset, progression and therapy response. An increasing number of mutations, cytogenetic abnormalities, and molecular signatures have been described that have diagnostic, phenotype defining or prognostic implications. Moreover, cell-free nucleic acid biomarkers are increasingly being investigated, benefiting the patient in a minimally invasive way. This review aims to provide an extensive overview of molecular biomarkers in WM and IgM-MGUS, considering current shortcomings, as well as potential future applications in a precision medicine approach.
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Affiliation(s)
- Daniela Drandi
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, 10126 Torino, Italy; (M.F.); (S.F.)
- Correspondence: (D.D.); (P.D.)
| | - Philippe Decruyenaere
- Department of Hematology, Ghent University Hospital, 9000 Ghent, Belgium;
- OncoRNALab, Cancer Research Institute Ghent (CRIG), 9000 Ghent, Belgium;
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Correspondence: (D.D.); (P.D.)
| | - Martina Ferrante
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, 10126 Torino, Italy; (M.F.); (S.F.)
| | - Fritz Offner
- Department of Hematology, Ghent University Hospital, 9000 Ghent, Belgium;
| | - Jo Vandesompele
- OncoRNALab, Cancer Research Institute Ghent (CRIG), 9000 Ghent, Belgium;
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Simone Ferrero
- Department of Molecular Biotechnology and Health Sciences, Hematology Division, University of Torino, 10126 Torino, Italy; (M.F.); (S.F.)
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Lu H, Durkin L, Zhao X, Nakashima MO. IgM Plasma Cell Myeloma. Am J Clin Pathol 2022; 157:47-53. [PMID: 34508562 DOI: 10.1093/ajcp/aqab095] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/04/2021] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Immunoglobulin M plasma cell myeloma (IgMPCM) is a rare entity that is difficult to distinguish from other IgM-related neoplasms. The study aims to characterize the clinicopathologic features of IgMPCM, including MYD88 L265P and CXCR4 mutations. METHODS From our institutional archives, bone marrow biopsy specimens from January 1, 2008, to December 1, 2018, with monotypic plasma cells (PCs) expressing IgM that met current International Myeloma Working Group/World Health Organization criteria for PCM were included. Sanger sequencing was used to test for MYD88 L265P and WHIM-like CXCR4 mutations. RESULTS Nine cases of IgMPCM were identified. Serum IgM paraproteins were detected in eight cases. CD138-positive PC burden averaged 41.9% (5%-80%). In four cases, PCs had lymphoplasmacytic morphology with cyclin D1 expression by immunohistochemistry. Three of four tested cases were positive for t(11;14) by fluorescence in situ hybridization, one with monosomy 13. The remaining case was positive for del13q14. All were negative for MYD88 L265P and WHIM-like CXCR4 mutations. Eight patients received immunochemotherapy, with four receiving autologous hematopoietic stem cell transplant. Median follow-up was 61 months (range, 11-120). All patients were alive except one. CONCLUSIONS Distinguishing IgMPCM from other IgM-related disorders requires correlation with clinical, laboratory, and radiologic findings. Exclusion of MYD88 L265P and WHIM-like CXCR4 mutations may be useful to diagnose IgMPCM.
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Affiliation(s)
- Haiyan Lu
- Department of Laboratory Medicine, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Lisa Durkin
- Department of Laboratory Medicine, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Xiaoxian Zhao
- Department of Laboratory Medicine, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Megan O Nakashima
- Department of Laboratory Medicine, Cleveland Clinic Foundation, Cleveland, OH, USA
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Sorigue M, Junca J, Ferra C, Marce S, Ruiz-Xivillé N, Pinyol L, Cabezon M, Espasa A, Dominguez D, Lopez-Viaplana L, Ruiz R, Buch J, Plensa E, Mostacedo SZ, Aranda J, Vergara S, Raya M, Granada I, Tapia G, Navarro JT, Beà S, Zamora L. FMOD expression in whole blood aids in distinguishing between chronic lymphocytic leukemia and other leukemic lymphoproliferative disorders. A pilot study. CYTOMETRY PART B-CLINICAL CYTOMETRY 2020; 98:421-428. [PMID: 32530577 DOI: 10.1002/cyto.b.21890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 04/25/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Within the hematopoietic compartment, fibromodulin (FMOD) is almost exclusively expressed in chronic lymphocytic leukemia (CLL) lymphocytes. We set out to determine whether FMOD could be of help in diagnosing borderline lymphoproliferative disorders (LPD). METHODS We established 3 flow cytometry-defined groups (CLL [n = 65], borderline LPD [n = 28], broadly defined as those with CLLflow score between 35 and -20 or discordant CD43 and CLLflow, and non-CLL LPD [n = 40]). FMOD expression levels were determined by standard RT-PCR in whole-blood samples. Patients were included regardless of lymphocyte count but with tumor burden ≥40%. RESULTS FMOD expression levels distinguished between CLL (median 98.5, interquartile range [IQR] 37.8-195.1) and non-CLL LPD (median 0.012, IQR 0.003-0.033) with a sensitivity and specificity of 1. Most borderline LPDs were CD5/CD23/CD200-positive with no loss of B-cell antigens and negative or partial expression of CD43. 16/22 patients with available cytogenetic analysis showed trisomy 12. In 25/28 (89%) of these patients, FMOD expression levels fell between CLL and non-CLL (median 3.58, IQR 1.06-6.21). DISCUSSION This study could suggest that borderline LPDs may constitute a distinct group laying in the biological spectrum of chronic leukemic LPDs. Future studies will have to confirm these results with other biological data. Quantification of FMOD can potentially be of help in the diagnosis of phenotypically complex LPDs.
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Affiliation(s)
- Marc Sorigue
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Jordi Junca
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Christelle Ferra
- Department of Clinical Haematology, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Silvia Marce
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Neus Ruiz-Xivillé
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Laia Pinyol
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Marta Cabezon
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Andrea Espasa
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Diana Dominguez
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | | | - Rocio Ruiz
- Institut Josep Carreres contra la leucemia, Badalona, Spain
| | - Joan Buch
- Department of Hematology, Hospital de Calella, Calella and ICO-Girona, Girona, Spain
| | | | | | - Jessica Aranda
- Institut Josep Carreres contra la leucemia, Badalona, Spain
| | - Sara Vergara
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Minerva Raya
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Isabel Granada
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Gustavo Tapia
- Department of Pathology, Hospital Germans Trias i Pujol, Badalona, Spain
| | - Jose-Tomas Navarro
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Silvia Beà
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain.,University of Barcelona, Barcelona, Spain
| | - Lurdes Zamora
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol, Institut de Recerca Josep Carreras, Universitat Autònoma de Barcelona, Badalona, Spain
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8
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Castillo JJ, Itchaki G, Gustine JN, Meid K, Flynn CA, Demos MG, Guerrera ML, Jimenez C, Kofides A, Liu X, Munshi M, Tsakmaklis N, Patterson CJ, Xu L, Yang G, Hunter ZR, Treon SP. A matched case-control study comparing features, treatment and outcomes between patients with non-IgM lymphoplasmacytic lymphoma and Waldenström macroglobulinemia. Leuk Lymphoma 2020; 61:1388-1394. [PMID: 31992103 DOI: 10.1080/10428194.2020.1719100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cases of non-IgM lymphoplasmacytic lymphoma (LPL) are rare. We performed a case-control study comparing features and outcomes of 31 non-IgM LPL cases and 93 Waldenström macroglobulinemia (WM) controls matched by age, sex, and year of diagnosis. Odds of MYD88 mutations were lower (odds ratio (OR) 0.22, p = .05), and median time to treatment was shorter in cases than in controls (4 vs. 32 months; p < .001). Odds of extramedullary disease were higher (OR 4.20, p = .01), while odds of neuropathy (OR 0.22, p = .25), and hyperviscosity (OR 0.26, p = .26) were lower in cases than in controls. Odds of using chemoimmunotherapy were higher (OR 2.62, p = .11) while odds of using proteasome inhibitors (OR 0.35, p = .15) and BTK inhibitors (OR 0.17, p = .21) were lower in cases than in controls. There were no differences in response and overall survival (OS) between cases and controls. Despite clinicopathological differences, response, and survival outcomes are similar between non-IgM LPL cases and WM controls.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
| | - Gilad Itchaki
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Institute of Hematology, Davidoff Cancer Center, Rabin Medical Center, Petah-Tikva, Israel
| | - Joshua N Gustine
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Kirsten Meid
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Catherine A Flynn
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Maria G Demos
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Maria L Guerrera
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Cristina Jimenez
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Amanda Kofides
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Xia Liu
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Manit Munshi
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Nicholas Tsakmaklis
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Christopher J Patterson
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Lian Xu
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Guang Yang
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Zachary R Hunter
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Medicine, Harvard Medical School, Boston, MA, USA
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9
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de Groen RAL, Schrader AMR, Kersten MJ, Pals ST, Vermaat JSP. MYD88 in the driver's seat of B-cell lymphomagenesis: from molecular mechanisms to clinical implications. Haematologica 2019; 104:2337-2348. [PMID: 31699794 PMCID: PMC6959184 DOI: 10.3324/haematol.2019.227272] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/19/2019] [Indexed: 12/11/2022] Open
Abstract
More than 50 subtypes of B-cell non-Hodgkin lymphoma (B-NHL) are recognized in the most recent World Health Organization classification of 2016. The current treatment paradigm, however, is largely based on 'one-size-fits-all' immune-chemotherapy. Unfortunately, this therapeutic strategy is inadequate for a significant number of patients. As such, there is an indisputable need for novel, preferably targeted, therapies based on a biologically driven classification and risk stratification. Sequencing studies identified mutations in the MYD88 gene as an important oncogenic driver in B-cell lymphomas. MYD88 mutations constitutively activate NF-κB and its associated signaling pathways, thereby promoting B-cell proliferation and survival. High frequencies of the hotspot MYD88(L265P) mutation are observed in extranodal diffuse large B-cell lymphoma and Waldenström macroglobulinemia, thereby demonstrating this mutation's potential as a disease marker. In addition, the presence of mutant MYD88 predicts survival outcome in B-NHL subtypes and it provides a therapeutic target. Early clinical trials targeting MYD88 have shown encouraging results in relapsed/refractory B-NHL. Patients with these disorders can benefit from analysis for the MYD88 hotspot mutation in liquid biopsies, as a minimally invasive method to demonstrate treatment response or resistance. Given these clear clinical implications and the crucial role of MYD88 in lymphomagenesis, we expect that analysis of this gene will increasingly be used in routine clinical practice, not only as a diagnostic classifier, but also as a prognostic and therapeutic biomarker directing precision medicine. This review focuses on the pivotal mechanistic role of mutated MYD88 and its clinical implications in B-NHL.
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Affiliation(s)
| | | | - Marie José Kersten
- Department of Hematology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam.,Lymphoma and Myeloma Center Amsterdam-LYMMCARE, Amsterdam.,Cancer Center Amsterdam, Amsterdam
| | - Steven T Pals
- Department of Hematology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam.,Cancer Center Amsterdam, Amsterdam.,Department of Pathology, Amsterdam University Medical Center, Amsterdam, the Netherlands
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10
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Response to Ibrutinib of a Refractory IgA Lymphoplasmacytic Lymphoma Carrying the MYD88 L265P Gene Mutation. Mediterr J Hematol Infect Dis 2019; 11:e2019057. [PMID: 31528323 PMCID: PMC6736335 DOI: 10.4084/mjhid.2019.057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 08/16/2019] [Indexed: 01/31/2023] Open
Abstract
In 2014 a 66-year-old woman presented with anemia and an IgAk monoclonal spike. Bone marrow (BM) biopsy showed 80% lymphocytes and lymphoplasmacytoid cells. Computed Tomography (CT) scan documented neither adenopathy nor splenomegaly. Diagnosis of IgA lymphoplasmacytic lymphoma was made. After three lines of treatment, progressive disease with adenopathies, splenomegaly, and ascites were documented on a CT scan. Our patient developed thrombocytopenia, transfusion-dependent anemia, and clinical deterioration. We performed genetic studies of peripheral blood lymphocytes with the NGS approach. Given the identification of MYD88 L265P mutation, in February 2018 our patient started ibrutinib off-label. Hb and PLT improved from day +35. In July 2018 no ascites and 50% reduction of adenopathies and spleen were shown on a CT scan. In April 2019 the patient was still on ibrutinib with transfusion independence and good performance status.
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11
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Abstract
Bing-Neel syndrome (BNS) is an uncommon presentation of Waldenström macroglobulinaemia (WM), seen during the course of the disease in about 1% of patients. BNS occurs when WM cells gain access to the central nervous system (CNS) causing neurological deficits. The diagnosis of BNS is suggested by the presence of radiological abnormalities, such as leptomeningeal enhancement on magnetic resonance imaging and confirmed by the presence of clonal lymphoplasmacytic cells and MYD88 L265P in the cerebrospinal fluid. The treatment of BNS requires agents with good penetration into the CNS, such as fludarabine, methotrexate and cytarabine. The novel Bruton Tyrosine Kinase inhibitor ibrutinib has shown CNS-penetrating properties, and recent data suggest a therapeutic role in BNS. In this review, we will discuss the clinical and pathological features, diagnostic criteria, treatment options and outcomes of patients with BNS.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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12
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Bagratuni T, Ntanasis-Stathopoulos I, Gavriatopoulou M, Mavrianou-Koutsoukou N, Liacos C, Patseas D, Kanellias N, Migkou M, Ziogas DC, Eleutherakis-Papaiakovou E, Roussou M, Fotiou D, Terpos E, Kastritis E, Dimopoulos MA. Detection of MYD88 and CXCR4 mutations in cell-free DNA of patients with IgM monoclonal gammopathies. Leukemia 2018; 32:2617-2625. [PMID: 30026568 PMCID: PMC6286389 DOI: 10.1038/s41375-018-0197-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 05/29/2018] [Accepted: 06/07/2018] [Indexed: 12/15/2022]
Abstract
Liquid biopsyis being integrated into cancer diagnostics with profound therapeutic implications. However, its role in Waldenström's Macroglobulinemia (WM) and IgM monoclonal gammopathies is still unclear. In this study, we evaluated the role of peripheral blood (PB) cell-free DNA (cfDNA) in characterizing the mutational status of MYD88 and CXCR4 of patients with IgM monoclonal gammopathies. Paired bone marrow (BM) tumor DNA (tDNA) and PB cfDNA samples from 98 patients (9 MGUS, 45 with WM in remission, 44 with smoldering WM, newly diagnosed or relapsed WM) and 10 controls with non-IgM monoclonal gammopathies were analyzed. Regarding MYD88L265P mutation, 76 patients had paired tDNA and cfDNA informative samples. Among patients with WM in remission, 65% harbored the MYD88L265P mutation, whereas the corresponding percentage among smoldering/newly diagnosed or relapsed WM was 92%. The overall concordance rate was 94% (72/76). For CXCR4 mutations, 65 patients had paired informative tDNA and cfDNA samples. The overall concordance rate was 90% (59/65). All controls had wild-type MYD88 and CXCR4. In conclusion, PB cfDNA is a useful, minimally invasive, cost-effective, and time-effective tool for the identification of the presence of MYD88 and CXCR4 mutations in patients with IgM monoclonal gammopathies avoiding unnecessary BM assessment.
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Affiliation(s)
- Tina Bagratuni
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioannis Ntanasis-Stathopoulos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Gavriatopoulou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Nefeli Mavrianou-Koutsoukou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Christine Liacos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios Patseas
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos Kanellias
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Magdalini Migkou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitrios C Ziogas
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Maria Roussou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Despina Fotiou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Terpos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstathios Kastritis
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Meletios A Dimopoulos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
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13
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Gavriatopoulou M, Terpos E, Kastritis E, Dimopoulos MA. The role of ibrutinib in Waldenström macroglobulinemia. Expert Opin Orphan Drugs 2017. [DOI: 10.1080/21678707.2018.1414597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Maria Gavriatopoulou
- Department of Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Terpos
- Department of Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstathios Kastritis
- Department of Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Meletios Athanasios Dimopoulos
- Department of Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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14
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Castillo JJ, Treon SP. Toward personalized treatment in Waldenström macroglobulinemia. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2017; 2017:365-370. [PMID: 29222280 PMCID: PMC6142554 DOI: 10.1182/asheducation-2017.1.365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Waldenström macroglobulinemia (WM) is a rare lymphoma with 1000 to 1500 new patients diagnosed per year in the United States. Patients with WM can experience prolonged survival times, which seem to have increased in the last decade, but relapse is inevitable. The identification of recurrent mutations in the MYD88 and CXCR4 genes has opened avenues of research to better understand and treat patients with WM. These developments are giving way to personalized treatment approaches for these patients, focusing on increasing depth and duration of response alongside lower toxicity rates. In the present document, we review the diagnostic differential, the clinical manifestations, and the pathological and genomic features of patients with WM. We also discuss the safety and efficacy data of alkylating agents, proteasome inhibitors, monoclonal antibodies, and Bruton tyrosine kinase inhibitors in patients with WM. Finally, we propose a genomically driven algorithm for the treatment of WM. The future of therapies for WM appears bright and hopeful, but we should be mindful of the cost-effectiveness and long-term toxicity of novel agents.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
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15
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Castillo JJ, Hunter ZR, Yang G, Treon SP. Novel approaches to targeting MYD88 in Waldenström macroglobulinemia. Expert Rev Hematol 2017; 10:739-744. [PMID: 28617062 DOI: 10.1080/17474086.2017.1343661] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Waldenström macroglobulinemia (WM) is an incurable lymphoma characterized by the accumulation of IgM-producing lymphoplasmacytic cells in the bone marrow and other organs. Although WM patients can experience prolonged remissions, the disease invariably recurs advocating for the need of novel treatments in order to achieve higher response and survival rates. The discovery of a recurrent mutation in the MYD88 gene and an increased understanding behind the biology of MYD88 signaling have provided the opportunity to developing novel agents targeting the MYD88 pathway. Areas covered: The present review focuses on potential therapies that could change the landscape of treatment of patients with WM, specifically focusing on inhibitors of the Bruton tyrosine kinase (BTK), phosphatidylinositol-3 kinase, hematopoietic cell kinase, interleukin-1 receptor associated kinase and MYD88 assembly. Expert commentary: Novel agents such as the BTK inhibitor ibrutinib has shown to be safe and highly effective in the treatment of WM. Ibrutinib has been approved in Europe and the United States for its use in patients with symptomatic WM. Prospective studies are ongoing and/or planned to study many other novel agents alone and in combination with aims at improving response, survival and quality of life in patients with WM.
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Affiliation(s)
- Jorge J Castillo
- a Bing Center for Waldenström Macroglobulinemia , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
| | - Zachary R Hunter
- a Bing Center for Waldenström Macroglobulinemia , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
| | - Guang Yang
- a Bing Center for Waldenström Macroglobulinemia , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
| | - Steven P Treon
- a Bing Center for Waldenström Macroglobulinemia , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
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16
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Ren Y, Zhou BQ, Xu Y, Fu CC, Shen HJ, Ding ZX, Wu DP. [The clinical features of patients with lymphoplasmacytic diseases harboring MyD88 L265P mutation]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2016; 37:1054-1059. [PMID: 28088969 PMCID: PMC7348489 DOI: 10.3760/cma.j.issn.0253-2727.2016.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Indexed: 12/03/2022]
Abstract
Objective: To explore the clinical features of lymphoplasmacytic diseases with MyD88 L265P mutation. Methods: To analyze the distribution of MYD88 L265P mutation in patients with lymphoplasmacytic diseases by using of ARMS PCR-CE. Results: There were 25(30.9%) MyD88 L265P mutated patients in 81 patients. The mutation was frequently observed in 14 patients with WM (77.8%, 14/18), 2 patients with lymphoplasmacytic lymphoma (66.7%, 2/3), 1 acute lymphocytic leukemia patient (50.0%, 1/2), 3 multiple myeloma patients (30.0%, 3/10), 1 patient with monoclonal gammopathy of undetermined significance (25%, 1/4), 3 patients with chronic lymphocytic leukemia (13.0%, 3/23) and 1 lymphoma patient (4.8%, 1/21). 20 (80%, 20/25) patients were identified with IgM subtype. Compared with wild-type group of 56 cases, mutated patients were older (median age: 67 years vs 55 years, P< 0.001), with lower WBC count (median count: 5.23 × 109/L vs 10.80 × 109/L, P=0.001), lower HGB level (median count: 85 g/L vs 119 g/L, P<0.001). Conclusion: MyD88 L265P mutation was mainly observed in patients with IgM subtype lymphoplasmacytic diseases, and Waldenstrom' s macroglobulinemia was the most common disease. Compared with the wild-type group, patients with MyD88 L265P mutation were older and had lower WBC count, lower level of HGB. However, further studies were needed to test the prognostic value of MyD88 L265P mutation.
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Affiliation(s)
- Y Ren
- First Affiliated Hospital of Soochow University, Jiangsu Institute of Hematology, Key Laboratory of Thrombosis and Hemostasis under Ministry of Health, Collaborative Innovation Center of Hematology, Institute of Blood and Marrow Transplantation, Soochow University, Suzhou 215006, China
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17
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Burnworth B, Wang Z, Singleton TP, Bennington A, Fritschle W, Bennington R, Brodersen LE, Wells DA, Loken MR, Zehentner BK. Clone-specific MYD88 L265P and CXCR4 mutation status can provide clinical utility in suspected Waldenström macroglobulinemia/lymphoplasmacytic lymphoma. Leuk Res 2016; 51:41-48. [PMID: 27890075 DOI: 10.1016/j.leukres.2016.10.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/10/2016] [Accepted: 10/17/2016] [Indexed: 10/20/2022]
Abstract
MYD88 L265P, a diagnostic marker for lymphoplasmacytic lymphoma (LPL)/Waldenström macroglobulinemia (WM) can also be detected in other hematopoietic malignancies. We demonstrate a novel approach to increase the specificity of this marker for WM/LPL diagnosis by combining flow cytometric cell sorting with molecular analysis. Clonal B-lymphocyte and co-occurring clonal plasma cell populations of low-grade B-cell lymphomas were sorted by flow cytometry and analyzed for immunoglobulin gene rearrangements (PCR), and for MYD88 and CXCR4 mutations. Identical clonal origin was confirmed by PCR for 21 LPL/WM cases and MYD88 L265P was detected in both B-cell and plasma cell fractions. 9/20 other B-cell lymphomas with identical light chain restriction on B-cells and plasma cells were genotypically identical by PCR and MYD88 L265P was detected in both cell fractions in 7/9 whereas in 11/20 specimens with different clonal origin, MYD88 L265P was absent (5/11), or only found in B-lymphocytes (4/11), or plasma cells (2/11). CXCR4 mutations were detected in 17/39 cases, but missed in 63% of these without cell sorting. Confirming MYD88L265P in both B-cells and plasma cell fractions can provide a novel and powerful discriminator to distinguish LPL/WM from phenotypically similar disorders. Furthermore, this approach significantly increases CXCR4 detection sensitivity.
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Affiliation(s)
- Bettina Burnworth
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
| | - Zhixing Wang
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
| | | | - Angela Bennington
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
| | - Wayne Fritschle
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
| | - Richard Bennington
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
| | | | - Denise A Wells
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
| | - Michael R Loken
- Hematologics Inc, 3161 Elliott Avenue, Suite 200, Seattle, WA, 98121, USA
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18
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Castillo JJ, Hunter ZR, Yang G, Argyropoulos K, Palomba ML, Treon SP. Future therapeutic options for patients with Waldenström macroglobulinemia. Best Pract Res Clin Haematol 2016; 29:206-215. [PMID: 27825467 DOI: 10.1016/j.beha.2016.08.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/29/2016] [Indexed: 11/29/2022]
Abstract
Waldenström macroglobulinemia (WM) is a rare lymphoma characterized by the accumulation of IgM-producing lymphoplasmacytic cells. Although WM patients can experience prolonged remissions, the disease invariably recurs. Therefore, novel treatments associated with higher success rates and lower toxicity profiles are needed. The discovery of recurrent mutations in the MYD88 and CXCR4 genes has unraveled potential therapeutic targets in WM patients. As a result of these findings and based on the design and execution of a prospective clinical trial, the FDA granted approval to ibrutinib, an oral Bruton tyrosine kinase (BTK) inhibitor, to treat patients with symptomatic WM. The present review focuses on potential therapies that could change the landscape of treatment of patients with WM, specifically focusing on inhibitors or antagonists or the proteasome, BTK, CD38, BCL2 and the CXCR4 and MYD88 genes themselves. Novel agents with novel mechanisms of action should be evaluated in the context of carefully designed clinical trials.
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Affiliation(s)
- Jorge J Castillo
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Zachary R Hunter
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Guang Yang
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Kimon Argyropoulos
- Division of Hematology and Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - M Lia Palomba
- Division of Hematology and Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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19
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Porwit A, Fend F, Kremer M, Orazi A, Safali M, van der Walt J. Issues in diagnosis of small B cell lymphoid neoplasms involving the bone marrow and peripheral blood. Report on the Bone Marrow Workshop of the XVIIth meeting of the European Association for Haematopathology and the Society for Hematopathology. Histopathology 2016; 69:349-73. [PMID: 27208429 DOI: 10.1111/his.12999] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 05/12/2016] [Accepted: 05/19/2016] [Indexed: 01/01/2023]
Abstract
Small B cell lymphoid neoplasms are the most common lymphoproliferative disorders involving peripheral blood (PB) and bone marrow (BM). The Bone Marrow Workshop (BMW) organized by the European Bone Marrow Working Group (EBMWG) of the European Association for Haematopathology (EAHP) during the XVIIth EAHP Meeting in Istanbul, October 2014, was dedicated to discussion of cases illustrating how the recent advances in immunophenotyping, molecular techniques and cytogenetics provide better understanding and classification of these entities. Submitted cases were grouped into following categories: (i) cases illustrating diagnostic difficulties in chronic lymphocytic leukaemia (CLL); (ii) cases of BM manifestations of small B cell lymphoid neoplasms other than CLL; (iii) transformation of small B cell lymphoid neoplasms in the BM; and (iv) multiclonality and composite lymphomas in the BM. This report summarizes presented cases and conclusions of the BMW and provides practical recommendations for classification of the BM manifestations of small B cell lymphoid neoplasms based on the current state of knowledge.
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences, Division of Oncology and Pathology, Faculty of Medicine, Lund University, Lund, Sweden.,Previous address: Department of Pathobiology and Laboratory Medicine, University Health Network, Toronto, ON, Canada
| | - Falko Fend
- Institute of Pathology and Neuropathology and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
| | - Marcus Kremer
- Institute of Pathology, Staedtisches Klinikum, München, Germany
| | - Attilio Orazi
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, NY, USA
| | | | - Jon van der Walt
- Department of Histopathology, Guy's and St Thomas' Hospitals, London, UK
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20
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B-cell-specific conditional expression of Myd88p.L252P leads to the development of diffuse large B-cell lymphoma in mice. Blood 2016; 127:2732-41. [PMID: 27048211 DOI: 10.1182/blood-2015-11-684183] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 03/30/2016] [Indexed: 12/20/2022] Open
Abstract
The adaptor protein MYD88 is critical for relaying activation of Toll-like receptor signaling to NF-κB activation. MYD88 mutations, particularly the p.L265P mutation, have been described in numerous distinct B-cell malignancies, including diffuse large B-cell lymphoma (DLBCL). Twenty-nine percent of activated B-cell-type DLBCL (ABC-DLBCL), which is characterized by constitutive activation of the NF-κB pathway, carry the p.L265P mutation. In addition, ABC-DLBCL frequently displays focal copy number gains affecting BCL2 Here, we generated a novel mouse model in which Cre-mediated recombination, specifically in B cells, leads to the conditional expression of Myd88(p.L252P) (the orthologous position of the human MYD88(p.L265P) mutation) from the endogenous locus. These mice develop a lymphoproliferative disease and occasional transformation into clonal lymphomas. The clonal disease displays the morphologic and immunophenotypical characteristics of ABC-DLBCL. Lymphomagenesis can be accelerated by crossing in a further novel allele, which mediates conditional overexpression of BCL2 Cross-validation experiments in human DLBCL samples revealed that both MYD88 and CD79B mutations are substantially enriched in ABC-DLBCL compared with germinal center B-cell DLBCL. Furthermore, analyses of human DLBCL genome sequencing data confirmed that BCL2 amplifications frequently co-occurred with MYD88 mutations, further validating our approach. Finally, in silico experiments revealed that MYD88-mutant ABC-DLBCL cells in particular display an actionable addiction to BCL2. Altogether, we generated a novel autochthonous mouse model of ABC-DLBCL that could be used as a preclinical platform for the development and validation of novel therapeutic approaches for the treatment of ABC-DLBCL.
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Castillo JJ, Ghobrial IM, Treon SP. Response to ibrutinib in a patient with IgG lymphoplasmacytic lymphoma carrying the MYD88 L265P gene mutation. Leuk Lymphoma 2016; 57:2699-701. [PMID: 26980069 DOI: 10.3109/10428194.2016.1157875] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Jorge J Castillo
- a Division of Hematologic Malignancies , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
| | - Irene M Ghobrial
- a Division of Hematologic Malignancies , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
| | - Steven P Treon
- a Division of Hematologic Malignancies , Dana-Farber Cancer Institute, Harvard Medical School , Boston , MA , USA
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Pertesi M, Galia P, Nazaret N, Vallée M, Garderet L, Leleu X, Avet-Loiseau H, Foll M, Byrnes G, Lachuer J, McKay JD, Dumontet C. Rare Circulating Cells in Familial Waldenström Macroglobulinemia Displaying the MYD88 L265P Mutation Are Enriched by Epstein-Barr Virus Immortalization. PLoS One 2015; 10:e0136505. [PMID: 26352266 PMCID: PMC4564105 DOI: 10.1371/journal.pone.0136505] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/04/2015] [Indexed: 12/30/2022] Open
Abstract
The MYD88 L265P is a recurrent somatic mutation in neoplastic cells from patients with Waldenström Macroglobulinemia (WM). We identified the MYD88 L265P mutation in three individuals from unrelated families, but its presence did not explain the disease segregation within these WM pedigrees. We observed the mutation in these three individuals at high allele fractions in DNA extracted from EBV-immortalized Lymphoblastoid cell lines established from peripheral blood (LCL), but at much lower allele fractions in DNA extracted directly from peripheral blood, suggesting that this mutation is present in a clonal cell subpopulation rather than of germ-line origin. Furthermore, we observed that the MYD88 L265P mutation is enriched in WM families, detected in 40.5% of patients with familial WM or MGUS (10/22 WM, 5/15 MGUS), compared to 3.5% of patients with familial MM or MGUS (0/72 MM, 4/41 MGUS) (p = 10-7). The mutant allele frequency increased with passages in vitro after immortalization with Epstein-Barr virus (EBV) consistent with the MYD88 L265P described gain-of-function proposed for this mutation. The MYD88 L265P mutation appears to be frequently present in circulating cells in patients with WM, and MGUS, and these cells are amenable to immortalization by EBV.
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Affiliation(s)
- Maroulio Pertesi
- Genetic Cancer Susceptibility, International Agency for Research on Cancer, Lyon, France
| | - Perrine Galia
- Hospices Civils de Lyon, Pierre Bénite, France; INSERM 1052, CNRS 5286, CRCL, Lyon, France; University of Lyon, Lyon, France
- ProfilExpert, Lyon, France
| | | | - Maxime Vallée
- Genetic Cancer Susceptibility, International Agency for Research on Cancer, Lyon, France
| | - Laurent Garderet
- INSERM, UMR_S 938, Proliferation and differentiation of stem cells, Paris, France; AP-HP, Hôpital Saint Antoine, Département d'hématologie et de thérapie cellulaire, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, Paris, France
| | - Xavier Leleu
- Service des maladies du sang, Hopital Huriez CHRU, Lille, France; Centre de Recherche INSERM U837, Facteurs de persistance des cellules leucémiques, Institut pour la Recherche sur le Cancer (IRCL), Lille, France
| | - Hervé Avet-Loiseau
- Unité génomique du myélome, Institut Universitaire du Cancer de Toulouse—Oncopole, CRCT INSERM U1037, Toulouse, France
| | - Matthieu Foll
- Genetic Cancer Susceptibility, International Agency for Research on Cancer, Lyon, France
| | - Graham Byrnes
- Biostatistics, International Agency for Research on Cancer, Lyon, France
| | | | - James D. McKay
- Genetic Cancer Susceptibility, International Agency for Research on Cancer, Lyon, France
| | - Charles Dumontet
- Hospices Civils de Lyon, Pierre Bénite, France; INSERM 1052, CNRS 5286, CRCL, Lyon, France; University of Lyon, Lyon, France
- ProfilExpert, Lyon, France
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Insuasti-Beltran G, Gale JM, Wilson CS, Foucar K, Czuchlewski DR. Significance ofMYD88L265P Mutation Status in the Subclassification of Low-Grade B-Cell Lymphoma/Leukemia. Arch Pathol Lab Med 2015; 139:1035-41. [DOI: 10.5858/arpa.2014-0322-oa] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Van Cauwenberge MG, Depreter B, Dumoulin EN, Emmerechts J, Nollet F, Vanopdenbosch LJ. Bing-Neel syndrome: Two unexpected cases and a review of the literature. J Neurol Sci 2015; 356:19-26. [PMID: 26159625 DOI: 10.1016/j.jns.2015.06.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 06/01/2015] [Accepted: 06/13/2015] [Indexed: 10/23/2022]
Abstract
Waldenström macroglobulinemia (WM) is a lymphoplasmacytic lymphoma characterized by the proliferation of small B-lymphocytes in the bone marrow that produce monoclonal immunoglobulin M (IgM). We describe two patients with WM who presented with neurological symptoms due to infiltration of lymphoplasmacytoid tumor cells in the central nervous system, a condition known as Bing-Neel syndrome. A literature review revealed that this syndrome is rare and commonly missed in clinical practice due to its variable presentation and a lack of awareness or knowledge. Brain and spinal magnetic resonance imaging may show a focal mass or diffuse infiltration. The diagnosis of Bing-Neel syndrome requires proof of IgM or lymphoplasmacytoid cells in cerebrospinal fluid or in a brain biopsy. Treatment with intravenous and/or intrathecal chemotherapy and cranial radiotherapy is described in literature with generally poor outcome, although a combination of these therapies seems to improve outcome. Nevertheless, insufficient data are currently available to make general treatment recommendations.
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Affiliation(s)
- M G Van Cauwenberge
- Department of Neurology, University Clinic RWTH Aachen, Germany; Department of Neurology, AZ Sint Jan Brugge Oostende, Belgium.
| | - B Depreter
- Department of Laboratory Hematology, University Hospital Ghent, Belgium
| | - E N Dumoulin
- Department of Laboratory Hematology, University Hospital Ghent, Belgium
| | - J Emmerechts
- Department of Laboratory Hematology, AZ Sint Jan Brugge Oostende, Belgium
| | - F Nollet
- Department of Laboratory Hematology, AZ Sint Jan Brugge Oostende, Belgium
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MYD88 L265P mutation analysis helps define nodal lymphoplasmacytic lymphoma. Mod Pathol 2015; 28:564-74. [PMID: 25216226 DOI: 10.1038/modpathol.2014.120] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 07/30/2014] [Indexed: 01/09/2023]
Abstract
The diagnosis of lymphoplasmacytic lymphoma is often challenging, especially in extramedullary tissues where the differential diagnosis includes nodal marginal zone lymphoma, splenic marginal zone lymphoma, or other small B-cell neoplasms with plasmacytic differentiation. The MYD88 L265P mutation has been recently identified in >90% of bone-marrow-based lymphoplasmacytic lymphoma, but the incidence of this abnormality and corresponding morphologic correlates in nodal lymphoplasmacytic lymphoma have not been established. We analyzed 87 cases of extramedullary lymphoplasmacytic lymphoma, splenic marginal zone lymphoma, unclassifiable splenic B-cell lymphomas, nodal marginal zone lymphoma with plasmacytic differentiation, and chronic lymphocytic leukemia/small lymphocytic lymphoma with plasmacytic differentiation for MYD88 L265P. Eighteen cases (21%) were positive, including 9/9 (100%) lymphoplasmacytic lymphomas with classic histologic features, 5/12 (42%) cases that met 2008 WHO criteria for lymphoplasmacytic lymphoma but with atypical morphologic features, 3/15 (20%) cases initially considered nodal marginal zone lymphoma with plasmacytic differentiation, and 1/6 (17%) unclassifiable splenic B-cell lymphomas. The presence of MYD88 L265P was associated with IgM paraprotein (P<0.001) and a trend for bone marrow involvement (P=0.09). Each of 44 splenectomy-defined splenic marginal zone lymphomas (19 with plasmacytic differentiation) and the chronic lymphocytic leukemia/small lymphocytic lymphoma with plasmacytic differentiation were negative for the mutation. Morphologic re-review with knowledge of MYD88 mutation status and all available clinical features suggested all MYD88 mutated cases were consistent with lymphoplasmacytic lymphoma (either classic or variant histology), except for one case which remained most consistent with nodal marginal zone lymphoma with plasmacytic differentiation. These results demonstrate the importance of MYD88 mutational analysis in better defining lymphoplasmacytic lymphoma as a relatively monomorphic small B-cell lymphoma with plasmacytic differentiation that may show total nodal architectural effacement and follicular colonization. Cases previously considered lymphoplasmacytic lymphoma that are more polymorphous and are often associated with histiocytes should no longer be included in the lymphoplasmacytic lymphoma category. Clinicopathologic review suggests that although MYD88 mutated non-lymphoplasmacytic lymphoma small B-cell neoplasms exist, they are very uncommon.
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Waldenström macroglobulinemia: What a hematologist needs to know. Blood Rev 2015; 29:301-19. [PMID: 25882617 DOI: 10.1016/j.blre.2015.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 03/07/2015] [Accepted: 03/17/2015] [Indexed: 12/28/2022]
Abstract
Waldenström macroglobulinemia (WM) is a distinct hematologic malignancy characterized by a lymphoplasmacytic bone marrow infiltration and the presence of immunoglobulin (Ig)M monoclonal protein. Patients typically present at an advanced age, and a substantial proportion are asymptomatic at diagnosis. A unifying diagnosis of WM may be missed by an unsuspecting hematologist, as symptomatic patients present with a multitude of non-specific manifestations. Although constitutional and neuropathy-related symptoms predominate, concomitant IgM-induced hyperviscosity-associated features can provide useful diagnostic clues. There are specific indications for initiation of therapy. This review focuses on the most up-to-date management strategies of WM, in addition to highlighting the recent discoveries of MYD88 and CXCR4 mutations that have shed unprecedented light on the complex signaling pathways, and opened avenues for novel therapeutic targeting. Although WM remains incurable, with the rapid emergence and integration of effective novel therapies, its clinical course appears poised to improve in the foreseeable future.
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Abstract
Waldenström Macroglobulinemia (WM) is a rare B-cell lymphoma characterized by the uncontrolled accumulation of malignant lymphoplasmacytic cells, mainly in the bone marrow, and monoclonal IgM production. Despite its rarity, our understanding of the biology of this disease has improved significantly in recent years with the identification of recurrent mutations in the MYD88 and CXCR4 genes. Based on the diversity of clinical features observed in WM patients, therapy should be highly personalized having into account several factors such as age, co-morbidities, IgM levels, and presence of hyperviscosity, coagulopathy, cryoglobulinemia, or cold agglutinin disease. In this chapter, we review the recent advances in the biology of WM and the current therapeutic options for untreated and relapsed WM patients. Finally, we discuss the role of prognostic factors and current evidence supporting an improvement in the survival of WM patients in the last decade.
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Rubin EH, Allen JD, Nowak JA, Bates SE. Developing precision medicine in a global world. Clin Cancer Res 2014; 20:1419-27. [PMID: 24634465 DOI: 10.1158/1078-0432.ccr-14-0091] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Advances in understanding the biology of cancer, as well as advances in diagnostic technologies, such as the advent of affordable high-resolution DNA sequencing, have had a major impact on the approach to identification of specific alterations in a given patient's cancer that could be used as a basis for treatment selection, and hence the development of companion diagnostics. Although there are now several examples of successful development of companion diagnostics that allow identification of patients who will achieve the greatest benefit from a new therapeutic, the path to coapproval of a diagnostic test along with a new therapeutic is complex and often inefficient. This review and the accompanying articles examine the current state of companion diagnostic development in the United States and Europe from academic, industry, regulatory, and economic perspectives. See all articles in this CCR Focus section, "The Precision Medicine Conundrum: Approaches to Companion Diagnostic Co-development."
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Affiliation(s)
- Eric H Rubin
- Authors' Affiliations: Merck Research Laboratories, North Wales, Pennsylvania; Friends of Cancer Research, Arlington, Virginia; NorthShore University Health System Pathology and Laboratory Medicine, Evanston, Illinois; and Developmental Therapeutics Branch, National Cancer Institute, Bethesda, Maryland
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Hamadeh F, MacNamara S, Bacon CM, Sohani AR, Swerdlow SH, Cook JR. Gamma heavy chain disease lacks the MYD88 L265p mutation associated with lymphoplasmacytic lymphoma. Haematologica 2014; 99:e154-5. [PMID: 24859878 DOI: 10.3324/haematol.2014.108688] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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Sahin I, Leblebjian H, Treon SP, Ghobrial IM. Waldenström macroglobulinemia: from biology to treatment. Expert Rev Hematol 2014; 7:157-68. [PMID: 24405328 DOI: 10.1586/17474086.2014.871494] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Waldenström macroglobulinemia (WM) is distinct B-cell lymphoproliferative disorder primarily characterized by bone marrow infiltration of lymphoplasmacytic cells along with production of a serum monoclonal (IgM). In this review, we describe the biology of WM, the diagnostic evaluation for WM with a discussion of other conditions that are in the differential diagnosis and clinical manifestations of the disease as well as current treatment options. Within the novel agents discussed are everolimus, perifosine, enzastaurin, panobinostat, bortezomib and carfilzomib, pomalidomide and ibrutinib. Many of the novel agents have shown good responses and have a better toxicity profile compared to traditional chemotherapeutic agents, which makes them good candidates to be used as primary therapies for WM in the future.
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Affiliation(s)
- Ilyas Sahin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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