1
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Özoğul E, Montaner A, Pol M, Frigola G, Balagué O, Syrykh C, Bousquets-Muñoz P, Royo R, Fontaine J, Traverse-Glehen A, Bühler MM, Giudici L, Roncador M, Zenz T, Carras S, Valmary-Degano S, de Leval L, Bosch-Schips J, Climent F, Salmeron-Villalobos J, Bashiri M, Ruiz-Gaspà S, Costa D, Beà S, Salaverria I, Giné E, Quintanilla-Martinez L, Brousset P, Raffeld M, Jaffe ES, Puente XS, López C, Nadeu F, Campo E. Large B-cell lymphomas with CCND1 rearrangement have different immunoglobulin gene breakpoints and genomic profile than mantle cell lymphoma. Blood Cancer J 2024; 14:166. [PMID: 39313500 PMCID: PMC11420347 DOI: 10.1038/s41408-024-01146-z] [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: 07/09/2024] [Revised: 09/06/2024] [Accepted: 09/13/2024] [Indexed: 09/25/2024] Open
Abstract
Mantle cell lymphoma (MCL) is genetically characterized by the IG::CCND1 translocation mediated by an aberrant V(D)J rearrangement. CCND1 translocations and overexpression have been identified in occasional aggressive B-cell lymphomas with unusual features for MCL. The mechanism generating CCND1 rearrangements in these tumors and their genomic profile are not known. We have reconstructed the IG::CCND1 translocations and the genomic profile of 13 SOX11-negative aggressive B-cell lymphomas using whole genome/exome and target sequencing. The mechanism behind the translocation was an aberrant V(D)J rearrangement in three tumors and by an anomalous IGH class-switch recombination (CSR) or somatic hypermutation (SHM) mechanism in ten. The tumors with a V(D)J-mediated translocation were two blastoid MCL and one high-grade B-cell lymphoma. None of them had a mutational profile suggestive of DLBCL. The ten tumors with CSR/SHM-mediated IGH::CCND1 were mainly large B-cell lymphomas, with mutated genes commonly seen in DLBCL and BCL6 rearrangements in 6. Two cases, which transformed from marginal zone lymphomas, carried mutations in KLF2, TNFAIP3 and KMT2D. These findings expand the spectrum of tumors carrying CCND1 rearrangement that may occur as a secondary event in DLBCL mediated by aberrant CSR/SHM and associated with a mutational profile different from that of MCL.
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Affiliation(s)
- Ece Özoğul
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Pathology Department, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Anna Montaner
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Melina Pol
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Gerard Frigola
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hospital Clínic de Barcelona, Barcelona, Spain
- University of Barcelona, Barcelona, Spain
| | - Olga Balagué
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hospital Clínic de Barcelona, Barcelona, Spain
- University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Charlotte Syrykh
- Toulouse University Hospital Center, Cancer Institute University of Toulouse-Oncopole, 1 avenue Irène Joliot-Curie, 31059, Toulouse, CEDEX 9, France
- INSERM UMR1037 Cancer Research Center of Toulouse (CRCT), ERL 5294 National Center for Scientific Research (CNRS), University of Toulouse III Paul-Sabatier, Toulouse, France
- Institut Carnot Lymphome CALYM, Laboratoire d'Excellence 'TOUCAN', Toulouse, France
| | - Pablo Bousquets-Muñoz
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología (IUOPA), Universidad de Oviedo, 33006, Oviedo, Spain
| | - Romina Royo
- Barcelona Supercomputer Center, Barcelona, Spain
| | | | | | | | - Luca Giudici
- Institute of Pathology, Ente Ospedaliero Cantonale (EOC), 6900, Locarno, Switzerland
| | | | | | - Sylvain Carras
- Grenoble Alpes University, CHU Grenoble Alpes and INSERMN UMR 1209/CNRS 5309, Institute for Advanced Biosciences, Grenoble, France
| | - Severine Valmary-Degano
- Grenoble Alpes University, CHU Grenoble Alpes and INSERMN UMR 1209/CNRS 5309, Institute for Advanced Biosciences, Grenoble, France
| | - Laurence de Leval
- Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Jan Bosch-Schips
- Hospital Universitari de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Spain
| | - Fina Climent
- Hospital Universitari de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Spain
| | | | - Melika Bashiri
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Silvia Ruiz-Gaspà
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Dolors Costa
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hospital Clínic de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Sílvia Beà
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hospital Clínic de Barcelona, Barcelona, Spain
- University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Itziar Salaverria
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Eva Giné
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hospital Clínic de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Leticia Quintanilla-Martinez
- Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
| | - Pierre Brousset
- Toulouse University Hospital Center, Cancer Institute University of Toulouse-Oncopole, 1 avenue Irène Joliot-Curie, 31059, Toulouse, CEDEX 9, France
- INSERM UMR1037 Cancer Research Center of Toulouse (CRCT), ERL 5294 National Center for Scientific Research (CNRS), University of Toulouse III Paul-Sabatier, Toulouse, France
- Institut Carnot Lymphome CALYM, Laboratoire d'Excellence 'TOUCAN', Toulouse, France
| | - Mark Raffeld
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Elaine S Jaffe
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Xose S Puente
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología (IUOPA), Universidad de Oviedo, 33006, Oviedo, Spain
| | - Cristina López
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hospital Clínic de Barcelona, Barcelona, Spain
- University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Ferran Nadeu
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain
| | - Elias Campo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
- Hospital Clínic de Barcelona, Barcelona, Spain.
- University of Barcelona, Barcelona, Spain.
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain.
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Quintanilla-Martinez L, Laurent C, Soma L, Ng SB, Climent F, Ondrejka SL, Zamo A, Wotherspoon A, de Leval L, Dirnhofer S, Leoncini L. Emerging entities: high-grade/large B-cell lymphoma with 11q aberration, large B-cell lymphoma with IRF4 rearrangement, and new molecular subgroups in large B-cell lymphomas. A report of the 2022 EA4HP/SH lymphoma workshop. Virchows Arch 2023; 483:281-298. [PMID: 37555980 PMCID: PMC10541818 DOI: 10.1007/s00428-023-03590-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/13/2023] [Accepted: 06/26/2023] [Indexed: 08/10/2023]
Abstract
Emerging entities and molecular subgroups in large B-cell lymphomas (LBCLs) were discussed during the 2022 European Association for Haematopathology/Society for Hematopathology workshop in Florence, Italy. This session focused on newly recognized diseases and their diagnostic challenges. High-grade/large B-cell lymphoma with 11q aberration (HG/LBCL-11q) is defined by chromosome 11q-gains and telomeric loss. FISH analysis is recommended for the diagnosis. HG/LBCL-11q can occur in the setting of immunodeficiency, including ataxia-telangiectasia, and predominates in children. The morphological spectrum of these cases is broader than previously thought with often Burkitt-like morphology and coarse apoptotic bodies. It has a Burkitt-like immunophenotype (CD10+, BCL6+, BCL2-) but MYC expression is weak or negative, lacks MYC rearrangement, and is in contrast to Burkitt lymphoma 50% of the cases express LMO2. LBCL with IRF4 rearrangement (LBCL-IRF4) occurs mainly in the pediatric population but also in adults. LBCL-IRF4 has an excellent prognosis, with distinguishing molecular findings. IRF4 rearrangements, although characteristic of this entity, are not specific and can be found in association with other chromosomal translocations in other large B-cell lymphomas. Other molecular subgroups discussed included primary bone diffuse large B-cell lymphoma (PB-DLBCL), which has distinctive clinical presentation and molecular findings, and B-acute lymphoblastic leukemia (B-ALL) with IGH::MYC translocation recently segregated from Burkitt lymphoma with TdT expression. This latter disorder has molecular features of precursor B-cells, often tetrasomy 1q and recurrent NRAS and KRAS mutations. In this report, novel findings, recommendations for diagnosis, open questions, and diagnostic challenges raised by the cases submitted to the workshop will be discussed.
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Affiliation(s)
- Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, Eberhard-Karls-University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Liebermeisterstrasse 8, 72076, Tübingen, Germany.
- Cluster of Excellence iFIT (EXC2180) "Image-guided and functionally Instructed Tumor therapies" Eberhard-Karls-University, Tübingen, Germany.
| | - Camille Laurent
- Department of Pathology, Toulouse University Hospital Center, Cancer Institute, University of Toulouse-Oncopole, Toulouse, France
| | - Lorinda Soma
- Department of Pathology, City of Hope National Medical Center, Duarte, CA, USA
| | - Siok-Bian Ng
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Fina Climent
- Department of Pathology, Hospital Universitari de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Sarah L Ondrejka
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Alberto Zamo
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | | | - 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
| | - Lorenzo Leoncini
- Department of Medical Biotechnology, Section of Pathology, University of Siena, Siena, Italy
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5
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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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