1
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Gibson SE, Dojcinov S, Dotlic S, Hartmann S, Hsi ED, Klimkowska M, Melle F, Pileri SA, Ramsower CA, Rech K, Rimsza LM, Rodriguez-Pinilla SM, Tousseyn TA, de Jong D, Sabattini E. Mediastinal large B cell lymphoma and surrounding gray areas: a report of the lymphoma workshop of the 20th meeting of the European Association for Haematopathology. Virchows Arch 2023; 483:733-749. [PMID: 37530791 DOI: 10.1007/s00428-023-03550-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/03/2023] [Accepted: 04/21/2023] [Indexed: 08/03/2023]
Abstract
Session 3 of the 2021 European Association for Haematopathology/Society for Hematopathology Workshop focused on mediastinal large B cell lymphomas and surrounding gray areas. One half of the session was dedicated to primary mediastinal large B cell lymphoma (PMBL) and included cases with classic clinicopathologic features, as well as cases with either morphologic or immunophenotypic variation, and PMBL-like cases with primary extramediastinal disease. The role of additional immunophenotyping and/or molecular testing to aid in the diagnosis of PMBL was discussed. The second half of the session focused on mediastinal and non-mediastinal gray zone lymphomas (GZL) with features intermediate between diffuse large B cell lymphoma (DLBCL) and classic Hodgkin lymphoma (CHL). Several cases illustrating the current challenges in separating this entity from PMBL/DLBCL and CHL were presented. There was discussion regarding the clinical and genetic differences between mediastinal and non-mediastinal GZLs. Rare cases of PMBL and GZL associated with EBV or follicular lymphoma were reviewed. Finally, several cases included in the session highlighted composite or sequential CHL and PMBL/DLBCL and/or GZL, highlighting challenges in separating such cases from GZL.
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Affiliation(s)
- Sarah E Gibson
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ, USA
| | - Stefan Dojcinov
- Department of Pathology, Morriston Hospital, Swansea Bay University Health Board, Swansea, UK
| | - Snjezana Dotlic
- Department of Pathology and Cytology, University Hospital Centre Zagreb, Zagreb, Croatia
| | - Sylvia Hartmann
- Dr. Senckenberg Institute of Pathology, Goethe University Frankfurt Am Main, Frankfurt Am Main, Germany
| | - Eric D Hsi
- Department of Pathology, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Monika Klimkowska
- Department of Clinical Pathology and Cancer Diagnostics, Karolinska University Hospital, Stockholm, Sweden
| | - Federica Melle
- Division of Haematopathology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Stefano A Pileri
- Division of Haematopathology, IEO, European Institute of Oncology IRCCS, Milan, Italy
| | | | - Karen Rech
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Lisa M Rimsza
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Phoenix, AZ, USA
| | | | - Thomas A Tousseyn
- Department of Imaging and Pathology, Translational Cell and Tissue Research Lab, KU Leuven, Louvain, Belgium
| | - Daphne de Jong
- Department of Pathology, Amsterdam UMC, Location VUMC, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands.
| | - Elena Sabattini
- Haematopathology Unit, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy
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2
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Soueidy C, Kourie HR. Updates in the Management of Primary Mediastinal B Cell Lymphoma. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2023; 23:866-873. [PMID: 37722943 DOI: 10.1016/j.clml.2023.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/17/2023] [Accepted: 08/18/2023] [Indexed: 09/20/2023]
Abstract
Primary mediastinal B cell lymphoma (PMBCL) is considered a distinct pathology according to the WHO classification of lymphoid malignancies. Patients have a better prognosis after the addition of Rituximab to anthracycline-based chemotherapy. The role of consolidative radiotherapy is controversial after the approval of dose-adjusted R-EPOCH and the selection of patients to undergo radiotherapy is based on end-of-therapy PET CT. In the relapsed/refractory setting, new approved drugs and other under investigation have improved patient outcomes. This review summarizes the different treatment modalities in (PMBCL) in the frontline and the relapsed/refractory settings.
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Affiliation(s)
- Charbel Soueidy
- Hematology Oncology Department, Hotel Dieu de France Hospital, Beirut, Lebanon.
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3
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Donzel M, Pesce F, Trecourt A, Groussel R, Bachy E, Ghesquières H, Fontaine J, Benzerdjeb N, Mauduit C, Traverse-Glehen A. Molecular Characterization of Primary Mediastinal Large B-Cell Lymphomas. Cancers (Basel) 2023; 15:4866. [PMID: 37835560 PMCID: PMC10571533 DOI: 10.3390/cancers15194866] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Since the description of primary mediastinal large B-cell lymphoma (PMBL) as a distinct entity from diffuse large B-cell lymphomas (DLBCL), numerous studies have made it possible to improve their definition. Despite this, this differential diagnosis can be challenging in daily practice. However, in some centers, PMBL may be treated according to a particular regimen, distinct from those used in DLBCL, emphasizing the importance of accurate identification at diagnosis. This study aimed to describe the histological and molecular characteristics of PMBL to improve the accuracy of their diagnosis. Forty-nine cases of PMBL were retrospectively retrieved. The mean age at diagnosis was 39 years (21-83), with a sex ratio of 0.88. All cases presented a fibrous background with diffuse growth of intermediate to large cells with an eosinophil (26/49, 53%) or retracted cytoplasm (23/49, 47%). "Hodgkin-like" cells were observed in 65% of cases (32/49, 65%). The phenotype was: BCL6+ (47/49, 96%), MUM1+ (40/49, 82%), CD30+ (43/49, 88%), and CD23+ (37/49, 75%). Genomic DNAs were tested by next generation sequencing of 33 cases using a custom design panel. Pathogenic variants were found in all cases. The most frequent mutations were: SOCS1 (30/33, 91%), TNFAIP3 (18/33, 54.5%), ITPKB (17/33, 51.5%), GNA13 (16/33, 48.5%), CD58 (12/33, 36.4%), B2M (12/33; 36.4%), STAT6 (11/33, 33.3%) as well as ARID1A (10/33, 30.3%), XPO1 (9/33, 27.3%), CIITA (8/33, 24%), and NFKBIE (8/33, 24%). The present study describes a PMBL cohort on morphological, immunohistochemical, and molecular levels to provide pathologists with daily routine tools. These data also reinforce interest in an integrated histomolecular diagnosis to allow a precision diagnosis as early as possible.
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Affiliation(s)
- Marie Donzel
- Hospices Civils de Lyon, Institut de Pathologie Multisite, Hôpital Lyon Sud, 69310 Lyon, France (N.B.)
- UFR Claude Bernard Lyon 1, 69100 Villeurbanne, France
- Centre International de Recherche en Infectiologie (CIRI), UFR Lyon-1, Institut National de la Santé et de la Recherche Médicale (INSERM) U1111, Centre National de la Recherche Scientifique (CNRS), UMR5308, Ecole Normale Supérieure de Lyon, 69342 Lyon, France
| | | | - Alexis Trecourt
- Hospices Civils de Lyon, Institut de Pathologie Multisite, Hôpital Lyon Sud, 69310 Lyon, France (N.B.)
- UFR Claude Bernard Lyon 1, 69100 Villeurbanne, France
| | | | - Emmanuel Bachy
- UFR Claude Bernard Lyon 1, 69100 Villeurbanne, France
- Centre International de Recherche en Infectiologie (CIRI), UFR Lyon-1, Institut National de la Santé et de la Recherche Médicale (INSERM) U1111, Centre National de la Recherche Scientifique (CNRS), UMR5308, Ecole Normale Supérieure de Lyon, 69342 Lyon, France
- Hospices Civils de Lyon, Service d’Hématologie, Hôpital Lyon Sud, 69310 Lyon, France
| | - Hervé Ghesquières
- UFR Claude Bernard Lyon 1, 69100 Villeurbanne, France
- Centre International de Recherche en Infectiologie (CIRI), UFR Lyon-1, Institut National de la Santé et de la Recherche Médicale (INSERM) U1111, Centre National de la Recherche Scientifique (CNRS), UMR5308, Ecole Normale Supérieure de Lyon, 69342 Lyon, France
- Hospices Civils de Lyon, Service d’Hématologie, Hôpital Lyon Sud, 69310 Lyon, France
| | - Juliette Fontaine
- Hospices Civils de Lyon, Institut de Pathologie Multisite, Hôpital Lyon Sud, 69310 Lyon, France (N.B.)
| | - Nazim Benzerdjeb
- Hospices Civils de Lyon, Institut de Pathologie Multisite, Hôpital Lyon Sud, 69310 Lyon, France (N.B.)
- UFR Claude Bernard Lyon 1, 69100 Villeurbanne, France
| | - Claire Mauduit
- Hospices Civils de Lyon, Institut de Pathologie Multisite, Hôpital Lyon Sud, 69310 Lyon, France (N.B.)
- Centre International de Recherche en Infectiologie (CIRI), UFR Lyon-1, Institut National de la Santé et de la Recherche Médicale (INSERM) U1111, Centre National de la Recherche Scientifique (CNRS), UMR5308, Ecole Normale Supérieure de Lyon, 69342 Lyon, France
- Institut National de la Santé et de la Recherche Médicale, Centre Méditerranéen de Médecine Moléculaire (C3M), Unité 1065, Equipe 10, 06000 Nice, France
| | - Alexandra Traverse-Glehen
- Hospices Civils de Lyon, Institut de Pathologie Multisite, Hôpital Lyon Sud, 69310 Lyon, France (N.B.)
- UFR Claude Bernard Lyon 1, 69100 Villeurbanne, France
- Centre International de Recherche en Infectiologie (CIRI), UFR Lyon-1, Institut National de la Santé et de la Recherche Médicale (INSERM) U1111, Centre National de la Recherche Scientifique (CNRS), UMR5308, Ecole Normale Supérieure de Lyon, 69342 Lyon, France
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4
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Batuello C, Mason EF. Diagnostic Utility of CD200 Immunohistochemistry in Distinguishing EBV-Positive Large B-Cell Lymphoma From Classic Hodgkin Lymphoma. Am J Clin Pathol 2023; 160:284-291. [PMID: 37227967 PMCID: PMC10472740 DOI: 10.1093/ajcp/aqad053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 04/12/2023] [Indexed: 05/27/2023] Open
Abstract
OBJECTIVES Epstein-Barr virus-positive large B-cell lymphoma (EBV+ LBCL) is a heterogeneous group of diseases that may resemble classic Hodgkin lymphoma (CHL) both morphologically and immunophenotypically. However, these diseases are treated with different therapies and carry distinct prognoses. We examined CD200 expression by immunohistochemistry in EBV+ LBCL and evaluated its diagnostic utility in the differential diagnosis with CHL. METHODS CD200 immunohistochemistry was performed on archival material from 20 cases of CHL (11 EBV+, 9 EBV-), 11 cases of EBV+ LBCL, and 10 cases of diffuse large B-cell lymphoma, not otherwise specified (DLBCL NOS). Staining pattern and intensity (0-3+ scale) were recorded. RESULTS CD200 positivity was seen in Reed-Sternberg cells in 19 (95%) of 20 cases of CHL, predominantly in a strong (3+, 15/19) and diffuse (>50% of cells, 17/19) pattern. In contrast, CD200 was negative in 8 (73%) of 11 cases of EBV+ LBCL; the 3 positive cases showed 1 to 2+ staining in less than 50% of lesional cells. All cases of DLBCL NOS were negative for CD200. CONCLUSIONS CD200 may be a useful immunophenotypic marker in differentiating EBV+ LBCL from CHL, with negative to partial/weak staining favoring a diagnosis of EBV+ LBCL and strong diffuse staining favoring a diagnosis of CHL.
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Affiliation(s)
- Christopher Batuello
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, US
| | - Emily F Mason
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, US
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5
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Shetty SV, Mazzucco MR, Winokur P, Haigh SV, Rumah KR, Fischetti VA, Vartanian T, Linden JR. Clostridium perfringens Epsilon Toxin Binds to and Kills Primary Human Lymphocytes. Toxins (Basel) 2023; 15:423. [PMID: 37505692 PMCID: PMC10467094 DOI: 10.3390/toxins15070423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/30/2023] [Accepted: 06/07/2023] [Indexed: 07/29/2023] Open
Abstract
Clostridium perfringens epsilon toxin (ETX) is the third most lethal bacterial toxin and has been suggested to be an environmental trigger of multiple sclerosis, an immune-mediated disease of the human central nervous system. However, ETX cytotoxicity on primary human cells has not been investigated. In this article, we demonstrate that ETX preferentially binds to and kills human lymphocytes expressing increased levels of the myelin and lymphocyte protein MAL. Using flow cytometry, ETX binding was determined to be time and dose dependent and was highest for CD4+ cells, followed by CD8+ and then CD19+ cells. Similar results were seen with ETX-induced cytotoxicity. To determine if ETX preference for CD4+ cells was related to MAL expression, MAL gene expression was determined by RT-qPCR. CD4+ cells had the highest amount of Mal gene expression followed by CD8+ and CD19+ cells. These data indicate that primary human cells are susceptible to ETX and support the hypothesis that MAL is a main receptor for ETX. Interestingly, ETX bindings to human lymphocytes suggest that ETX may influence immune response in multiple sclerosis.
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Affiliation(s)
- Samantha V. Shetty
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA (T.V.)
| | - Michael R. Mazzucco
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA (T.V.)
| | - Paige Winokur
- Harold and Margaret Milliken Hatch Laboratory of Neuro-Endocrinology Rockefeller University, New York, NY 10065, USA
| | - Sylvia V. Haigh
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA (T.V.)
| | - Kareem Rashid Rumah
- Laboratory of Bacterial Pathogenesis and Immunology, Rockefeller University, New York, NY 10065, USA
| | - Vincent A. Fischetti
- Laboratory of Bacterial Pathogenesis and Immunology, Rockefeller University, New York, NY 10065, USA
| | - Timothy Vartanian
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA (T.V.)
| | - Jennifer R. Linden
- Feil Family Brain and Mind Research Institute, Weill Cornell Medical College, New York, NY 10065, USA (T.V.)
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6
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Sohani AR. Hodgkin Lymphoma and Its Differential Diagnosis: New Twists on an Old Challenge. Surg Pathol Clin 2023; 16:287-346. [PMID: 37149361 DOI: 10.1016/j.path.2023.02.002] [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: 05/08/2023]
Abstract
Hodgkin lymphoma is a B-cell neoplasm that typically presents with localized, nodal disease. Tissues are characterized by few large neoplastic cells, usually comprising less than 10% of tissue cellularity, present in a background of abundant nonneoplastic inflammatory cells. This inflammatory microenvironment, although key to the pathogenesis, can make diagnosis a challenge because reactive conditions, lymphoproliferative diseases, and other lymphoid neoplasms may mimic Hodgkin lymphoma and vice versa. This review provides an overview of the classification of Hodgkin lymphoma, its differential diagnosis, including emerging and recently recognized entities, and strategies to resolve challenging dilemmas and avoid diagnostic pitfalls.
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Affiliation(s)
- Aliyah R Sohani
- Department of Pathology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, WRN 219, Boston, MA 02114, USA.
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7
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Labat-de-Hoz L, Rubio-Ramos A, Correas I, Alonso MA. The MAL Family of Proteins: Normal Function, Expression in Cancer, and Potential Use as Cancer Biomarkers. Cancers (Basel) 2023; 15:2801. [PMID: 37345137 DOI: 10.3390/cancers15102801] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/06/2023] [Accepted: 05/15/2023] [Indexed: 06/23/2023] Open
Abstract
The MAL family of integral membrane proteins consists of MAL, MAL2, MALL, PLLP, CMTM8, MYADM, and MYADML2. The best characterized members are elements of the machinery that controls specialized pathways of membrane traffic and cell signaling. This review aims to help answer the following questions about the MAL-family genes: (i) is their expression regulated in cancer and, if so, how? (ii) What role do they play in cancer? (iii) Might they have biomedical applications? Analysis of large-scale gene expression datasets indicated altered levels of MAL-family transcripts in specific cancer types. A comprehensive literature search provides evidence of MAL-family gene dysregulation and protein function repurposing in cancer. For MAL, and probably for other genes of the family, dysregulation is primarily a consequence of gene methylation, although copy number alterations also contribute to varying degrees. The scrutiny of the two sources of information, datasets and published studies, reveals potential prognostic applications of MAL-family members as cancer biomarkers-for instance, MAL2 in breast cancer, MAL2 and MALL in pancreatic cancer, and MAL and MYADM in lung cancer-and other biomedical uses. The availability of validated antibodies to some MAL-family proteins sanctions their use as cancer biomarkers in routine clinical practice.
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Affiliation(s)
- Leticia Labat-de-Hoz
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Armando Rubio-Ramos
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Isabel Correas
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Department of Molecular Biology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Miguel A Alonso
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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8
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Kurz KS, Ott M, Kalmbach S, Steinlein S, Kalla C, Horn H, Ott G, Staiger AM. Large B-Cell Lymphomas in the 5th Edition of the WHO-Classification of Haematolymphoid Neoplasms-Updated Classification and New Concepts. Cancers (Basel) 2023; 15:cancers15082285. [PMID: 37190213 DOI: 10.3390/cancers15082285] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 05/17/2023] Open
Abstract
The family/class of the large B-cell lymphomas (LBCL) in the 5th edition of the World Health Organization (WHO) classification of haematolymphoid tumors (WHO-HAEM5) features only a few major changes as compared to the 4th edition. In most entities, there are only subtle changes, many of them only representing some minor modifications in diagnostic terms. Major changes have been made in the diffuse large B-cell lymphomas (DLBCL)/high-grade B-cell lymphomas (HGBL) associated with MYC and BCL2 and/or BCL6 rearrangements. This category now consists of MYC and BCL2 rearranged cases exclusively, while the MYC/BCL6 double hit lymphomas now constitute genetic subtypes of DLBCL, not otherwise specified (NOS) or of HGBL, NOS. Other major changes are the conceptual merger of lymphomas arising in immune-privileged sites and the description of LBCL arising in the setting of immune dysregulation/deficiency. In addition, novel findings concerning underlying biological mechanisms in the pathogenesis of the different entities are provided.
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Affiliation(s)
- Katrin S Kurz
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
| | - Michaela Ott
- Department of Pathology, Marienhospital, 70199 Stuttgart, Germany
| | - Sabrina Kalmbach
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, 70376 Stuttgart, Germany
| | - Sophia Steinlein
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, 70376 Stuttgart, Germany
| | - Claudia Kalla
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, 70376 Stuttgart, Germany
| | - Heike Horn
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, 70376 Stuttgart, Germany
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
| | - Annette M Staiger
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, 70376 Stuttgart, Germany
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9
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Underdown MJ, Miles RR, Gross TG, Winters AC. Importance of clinical correlation in the diagnosis of pediatric B-cell lymphomas. Pediatr Blood Cancer 2022; 69:e29527. [PMID: 34962700 DOI: 10.1002/pbc.29527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 11/10/2021] [Accepted: 11/23/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Mary J Underdown
- Center for Cancer and Blood Disorders, Children's Hospital Colorado, Aurora, Colorado, USA.,Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rodney R Miles
- Department of Pathology and ARUP Laboratories, University of Utah, Salt Lake City, Utah, USA
| | - Thomas G Gross
- Center for Cancer and Blood Disorders, Children's Hospital Colorado, Aurora, Colorado, USA.,Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Amanda C Winters
- Center for Cancer and Blood Disorders, Children's Hospital Colorado, Aurora, Colorado, USA.,Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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10
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Fakhri B, Ai W. Current and emerging treatment options in primary mediastinal B-cell lymphoma. Ther Adv Hematol 2021; 12:20406207211048959. [PMID: 34659697 PMCID: PMC8511915 DOI: 10.1177/20406207211048959] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 07/21/2021] [Indexed: 11/24/2022] Open
Abstract
Previously considered a subtype of diffuse large B-cell lymphoma (DLBCL), primary
mediastinal B-cell lymphoma (PMBCL) is now recognized by the World Health
Organization as an independent entity. PMBCL has clinicopathologic features that
are separate from systemic DLBCL and harbors some biologic characteristics which
overlap with nodular sclerosing classic Hodgkin’s lymphoma (cHL). Similar to
cHL, copy number alterations of 9p24.1 are frequently seen in PMBCL, which leads
to increased expression of key genes in the region, including programmed
death-ligand 1( PD-L1), PD-L2, and JAK2. In addition, PMBCL cells express CD30
in a mostly patchy fashion. In the upfront setting, dose-adjusted etoposide,
prednisone, vincristine, cyclophosphamide, doxorubicin, and rituximab (i.e.,
DA-EPOCH-R) is the only regimen that has been shown in a prospective setting to
result in outstanding outcomes without consolidative radiation to the
mediastinum, with a 5-year event-free survival rate of 93% and overall survival
rate of 97%. Thus, in recent years, DA-EPOCH-R has been recognized as the
preferred frontline regimen. Despite the encouraging results in the frontline
setting, the outcomes in the relapsed/refractory setting remain poor. The
current approach of salvage chemotherapy followed by autologous stem cell
transplantation, as used in patients with DLBCL, does not result in high rates
of cure in patients with rrPMBCL. In recent years, the characteristic molecular
features identified in PMBCL have provided more treatment opportunities for this
patient population. In the relapsed setting, single-agent PD-1 inhibitor
pembrolizumab have demonstrated high and durable remission rates. Despite the
expression of CD30, the CD30 antibody drug-conjugate brentuximab vedotin (BV) as
a single agent has been deemed inactive in this disease. On the contrary, the
combinations of BV and PD-1 inhibitor have shown higher response rates than PD-1
inhibitor alone. Moreover, anti-CD19 chimeric antigen receptor T-cell (CAR
T-cell) therapy has been positioned as another successful strategy for patients
with rrPMBCL. Axicabtagene ciloleucel and lisocabtagene maraleucel are two
products used in rrPMBCL.
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Affiliation(s)
- Bita Fakhri
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Weiyun Ai
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
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11
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Yu Y, Dong X, Tu M, Wang H. Primary mediastinal large B cell lymphoma. Thorac Cancer 2021; 12:2831-2837. [PMID: 34590432 PMCID: PMC8563158 DOI: 10.1111/1759-7714.14155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 02/01/2023] Open
Abstract
Primary mediastinal large B cell lymphoma (PMBCL) is an aggressive large B cell lymphoma originating in the mediastinum, that mainly expresses B cell surface molecules, such as CD19, CD20, CD22, andCD79a. Clinically, they are characterized by rapidly increasing anterior mediastinal masses, which can cause compression of the surrounding tissues. The diagnosis of PMBCL mainly depends on the pathological features, imaging examination and clinical features. Currently, the most commonly used therapeutic regimens are R‐CHOP and R‐EPOCH. Radiotherapy is beneficial in some patients, but it can also lead to long‐term toxicity. The research and development of novel therapies are ongoing, and some studies have achieved encouraging results, including those conducted on chimeric antigen receptor‐modified T (CAR‐T) cell therapy and anti‐PD‐1 drugs. However, randomized controlled trials with larger sample sizes are still needed. Positron emission tomography‐computed tomography (PET‐CT) is mainly used to assess the curative effect after treatment and to guide the subsequent treatment strategy.
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Affiliation(s)
- Yating Yu
- Department of Hematology, General Hospital, Tianjin Medical University, Tianjin, China
| | - Xifeng Dong
- Department of Hematology, General Hospital, Tianjin Medical University, Tianjin, China
| | - Meifeng Tu
- Department of Lymphoma, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
| | - Huaquan Wang
- Department of Hematology, General Hospital, Tianjin Medical University, Tianjin, China
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12
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Primary mediastinal Large B-cell Lymphoma. Blood 2021; 140:955-970. [PMID: 34496020 DOI: 10.1182/blood.2020008376] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/23/2021] [Indexed: 11/20/2022] Open
Abstract
Primary mediastinal large B-cell lymphoma (PMBCL) is a separate entity in the WHO classification based on clinico-pathologic features and a distinct molecular signature which overlaps with nodular sclerosis classical Hodgkin lymphoma (NScHL). Molecular classifiers can distinguish PMBCL from diffuse large B-cell lymphoma (DLBCL) using RNA derived from paraffin-embedded tissue and are integral to future studies. However, given that ~5% of DLBCL can have a 'molecular' PMBCL phenotype in the absence of mediastinal involvement, clinical information will remain critical for diagnosis. Studies over the last 10-20 years have elucidated the biologic hallmarks of PMBCL which are reminiscent of cHL, including the importance of JAK-STAT and NFKB signaling pathways as well as an immune evasion phenotype through multiple converging genetic aberrations. The outcome of PMBCL has improved in the modern rituximab era, however controversies remain whether there is a single standard treatment for all patients and when to integrate radiotherapy. Regardless of the frontline therapy, refractory disease can occur in up to 10% of patients and correlates with poor outcome. With emerging data supporting high efficacy of PD1 inhibitors in PMBCL, studies are underway integrating them into the up-front setting.
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Ondrejka SL, Ott G. How I Diagnose Primary Mediastinal (Thymic) Large B-Cell Lymphoma. Am J Clin Pathol 2021; 156:497-512. [PMID: 34398178 DOI: 10.1093/ajcp/aqab122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/28/2021] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Primary mediastinal (thymic) large B-cell lymphoma (PMBL) is an uncommon large B-cell neoplasm recognized by the World Health Organization as a distinct entity on the basis of its unique clinical features, histogenesis, phenotype, and pathogenetic mechanisms. The diagnosis of PMBL can be challenging because of features that may overlap with other (Hodgkin and non-Hodgkin) lymphoma types. This review describes our approach to the diagnosis of PMBL. METHODS Two cases are presented to illustrate how we diagnose PMBL and separate PMBL from related histologic and biological mimickers, such as Hodgkin lymphoma and gray zone lymphoma. RESULTS A diagnosis of PMBL requires correlation of morphology and immunophenotype with clinical and staging data. Gene expression analysis is not typically performed in clinical labs but has expanded our understanding of the functional pathways underlying this disease and helped identify biomarkers that can be translated to diagnostic practice and possibly to future therapeutic options. CONCLUSIONS PMBL and closely related entities can pose diagnostic challenges. It is important to understand the borders between PMBL and other closely related lymphoma types so that patients receive successful primary treatment with curative intent.
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Affiliation(s)
- Sarah L Ondrejka
- Department of Laboratory Medicine, Cleveland Clinic, Cleveland, OH, USA
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
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Wang X, Wang W, Vega F, Quesada AE. Aggressive Mediastinal Lymphomas. Semin Diagn Pathol 2021:S0740-2570(21)00049-6. [PMID: 34175178 DOI: 10.1053/j.semdp.2021.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 06/10/2021] [Indexed: 11/11/2022]
Abstract
The mediastinum contains essentially all major intrathoracic organs except for the lungs. A variety of both benign and malignant tumors can involve the mediastinum, of which lymphoma is the most common malignancy. Compared to secondary mediastinal involvement by systemic lymphomas, primary mediastinal lymphomas are less common with several specific entities that are mainly confined to mediastinal lymph nodes, and/or thymus. This review will summarize the clinical, histologic, immunophenotypic and molecular genetic features of the most common and most aggressive primary mediastinal lymphomas as well as provide suggested immunohistochemistry panels and differential diagnoses.
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Affiliation(s)
- Xiaoqiong Wang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Wei Wang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Francisco Vega
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Andres E Quesada
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX.
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15
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Fairchild A, McCall CM, Oyekunle T, Niedzwiecki D, Champ C, McKinney M, Kelsey CR. Primary Mediastinal (Thymic) Large B-Cell Lymphoma: Fidelity of Diagnosis Using WHO Criteria. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2020; 21:e464-e469. [PMID: 33487576 DOI: 10.1016/j.clml.2020.12.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 12/11/2020] [Accepted: 12/19/2020] [Indexed: 11/18/2022]
Abstract
PURPOSE Diagnosing primary mediastinal (thymic) large B-cell lymphoma (PMBCL) is challenging because it is a clinicopathologic entity that shares characteristics with other lymphomas and lacks pathognomonic features. We sought to investigate the fidelity between a working diagnosis of PMBCL at our institution and the clinicopathologic criteria established within the 2017 World Health Organization (WHO) classification. PATIENTS AND METHODS Medical records and archived tissue of patients treated for stage I-II PMBCL from 1998 to 2018 were retrospectively reviewed for clinical and pathologic conformity with current WHO criteria. Disease was characterized as definitely PMBCL if all of the following were present: anterior mediastinal mass with or without lymph node involvement, no extranodal disease, B-cell antigen expression, Epstein-Barr virus negativity, and at least one supportive feature: female gender under age 40, bulky primary tumor, CD30 weakly positive, compartmentalizing alveolar fibrosis, lack of surface immunoglobulin expression, and MUM1 or CD23 positivity. Disease without supportive features or other pathologic findings more suggestive of other entities was characterized as equivocal for PMBCL. Lack of an anterior mediastinal mass, presence of distant lymph node involvement or extranodal disease, lack of B-cell antigen expression, or Epstein-Barr virus positivity were characterized as definitely not PMBCL. Clinical management and outcomes were also assessed. RESULTS Of 63 patients treated for presumed stage I-II PMBCL, 58 (92%) met the criteria for PMBCL. The most common reason for a discordant diagnosis was lack of an anterior mediastinal mass (n = 3). Two additional patients were characterized as having disease equivocal for PMBCL. In retrospect, one patient most likely had a mediastinal gray zone lymphoma due to CD15 positivity and another diffuse large B cell, not otherwise specified, at pathologic review. Five-year progression-free and overall survival were 67% (95% confidence interval, 54-77) and 81% (95% confidence interval, 68-89), respectively, for all patients. CONCLUSION Despite the complexity of the clinicopathologic criteria of PMBCL, most patients (92%) who were treated for stage I-II PMBCL at our institution appear to have been accurately diagnosed.
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Affiliation(s)
- Andrew Fairchild
- Department of Radiation Oncology Duke University Medical Center, Durham, NC.
| | - Chad M McCall
- Department of Pathology, Duke University Medical Center, Durham, NC
| | - Taofik Oyekunle
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, NC
| | - Donna Niedzwiecki
- Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, NC
| | - Colin Champ
- Department of Radiation Oncology Duke University Medical Center, Durham, NC
| | - Matthew McKinney
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, NC
| | - Chris R Kelsey
- Department of Radiation Oncology Duke University Medical Center, Durham, NC
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16
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Jacquier A, Syrykh C, Bedgedjian I, Monnien F, Laurent C, Valmary-Degano S, Brousset P. Immunohistochemistry with anti-MAL antibody and RNAscope with MAL probes are complementary techniques for diagnosis of primary mediastinal large B-cell lymphoma. J Clin Pathol 2020; 74:jclinpath-2020-206747. [PMID: 32839159 PMCID: PMC8142454 DOI: 10.1136/jclinpath-2020-206747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/03/2020] [Accepted: 07/07/2020] [Indexed: 01/16/2023]
Abstract
AIMS Primary mediastinal large B-cell lymphoma (PMBL) diagnosis can be challenging on needle biopsies. Robust techniques are needed to ensure diagnosis of this lymphoma which is highly sensitive to recently developed therapy protocols. METHODS In this study, we sought to determine precise PMBL phenotype, compared with diffuse large B-cell lymphoma not otherwise specified, by combining immunohistochemistry with anti-MAL antibody and RNA in situ hybridisation (RNAscope) with specific MAL probes. RESULTS The overall MAL positivity level reached 93% (14/15) of cases of PMBL. Among the 15 cases enrolled in the study, 11 were undoubtedly positive for MAL immunostaining whereas 13 were positive by RNA in situ hybridisation. Interestingly, one case that was negative by in situ hybridisation turned out to be positive by immunohistochemistry. CONCLUSIONS Taken together, our results demonstrate that in situ detection of both MAL transcripts and protein are complementary and increase the sensitivity and specificity of PMBL diagnosis.
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Affiliation(s)
- Anthony Jacquier
- Department of Pathology, University Hospital of Besancon, Besancon, France
| | - Charlotte Syrykh
- Department of Pathology, Cancer University Institute of Toulouse, Toulouse, France
| | | | - Franck Monnien
- Department of Pathology, University Hospital of Besancon, Besancon, France
| | - Camille Laurent
- Department of Pathology, Cancer University Institute of Toulouse, Toulouse, France
| | | | - Pierre Brousset
- Department of Pathology, Cancer University Institute of Toulouse, Toulouse, France
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Vaughan JW, Shi M, Horna P, Olteanu H. Increased CD200 expression in post-transplant lymphoproliferative disorders correlates with an increased frequency of FoxP3(+) regulatory T cells. Ann Diagn Pathol 2020; 48:151585. [PMID: 32829067 DOI: 10.1016/j.anndiagpath.2020.151585] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/30/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
Abstract
CD200 is a membrane protein with immunosuppressive function and is expressed in many hematopoietic neoplasms, including acute myeloid leukemia (AML), plasma cell myeloma (PCM), and B-cell lymphoproliferative disorders, but is mostly negative in diffuse large cell lymphoma (DLBCL). CD200 has been shown to be a poor prognostic marker in AML and PCM; in AML, its immunomodulatory effect was linked to its ability to induce FoxP3(+) regulatory T cells (Tregs). Post-transplant lymphoproliferative disorders (PTLDs) arise in the setting of immune dysregulation, and tumor-infiltrating T cells, including Tregs, have been shown to correlate with outcome in these disorders. Because there is no literature data and CD200 is a potentially useful diagnostic and prognostic marker, we studied the expression of CD200 in a series of 38 PTLDs by immunohistochemistry (ICH), and found that 23.7% PTLDs were CD200(+) and showed strong membrane and cytoplasmic positivity in the neoplastic cells. All CD200(+) monomorphic PTLDs were DLBCLs and the median FoxP3(+) Treg count/hpf was higher in CD200(+) than in CD200(-) PTLDs: 22.6 vs. 0.30 (p < 0.001). These results indicated that almost a quarter of PTLDs in our series are CD200(+) by IHC, and CD200 expression correlates with the frequency of immunosuppressive Tregs. This is novel data and supports a pathophysiologic link between CD200 activity and Tregs. In our series, the 5-year overall survival was shorter in CD200(+) PTLDs, compared to CD200(-) patients, although this difference did not reach statistical significance. In addition, we find a higher proportion of CD200(+) monomorphic PTLD-DLBCLs (31.0%), as compared to de novo DLBCLs (7-8%, as found here and in other studies). This may indicate differential expression of CD200 in B-cell lymphomas arising in the setting of immune dysregulation, and raises the possibility of anti-CD200 immunotherapy for these cases.
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Affiliation(s)
- James W Vaughan
- Department of Pathology, University of Tennessee Graduate School of Medicine, Knoxville, TN, United States of America
| | - Min Shi
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Pedro Horna
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Horatiu Olteanu
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, MN, United States of America.
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18
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Kelemen K, Rimsza LM, Craig FE. Primary Pulmonary B-cell Lymphoma. Semin Diagn Pathol 2020; 37:259-267. [PMID: 32444246 DOI: 10.1053/j.semdp.2020.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/22/2020] [Accepted: 04/09/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Katalin Kelemen
- Mayo Clinic Arizona, Division of Hematopathology, Department of Laboratory Medicine and Pathology, Phoenix, Arizona.
| | - Lisa M Rimsza
- Mayo Clinic Arizona, Division of Hematopathology, Department of Laboratory Medicine and Pathology, Phoenix, Arizona
| | - Fiona E Craig
- Mayo Clinic Arizona, Division of Hematopathology, Department of Laboratory Medicine and Pathology, Phoenix, Arizona
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Primary Mediastinal Nodal and Extranodal Non-Hodgkin Lymphomas: Current Concepts, Historical Evolution, and Useful Diagnostic Approach: Part 1. Adv Anat Pathol 2019; 26:346-370. [PMID: 31567132 DOI: 10.1097/pap.0000000000000249] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Primary mediastinal non-Hodgkin lymphomas (PM-NHLs) represent ~5% of all NHLs and comprise lymphomas of B-cell and T-cell origin. PM-NHLs are defined as involvement of mediastinal lymph nodes, thymus, and/or mediastinal organs (heart, lung, pleura, pericardium) by NHL without evidence of systemic disease at presentation. The clinical scenario is variable and depends on the lymphoma subtype. The radiologic presentation is also variable ranging from a mediastinal mass with or without superior vena cava syndrome, a pleural or a cardiac mass associated with an effusion, or as an effusion only. The diagnosis of PM-NHLs can only be established by microscopic evaluation, and therefore, general pathologists should be aware of these tumors and familiar with their diagnostic approach. The most common anterior mediastinal NHLs (90% to 95%) are primary mediastinal large B-cell lymphoma and T lymphoblastic lymphoma. Thymic marginal zone lymphoma and mediastinal gray zone lymphoma are very rare. The remainder PM-NHLs involving middle or posterior mediastinum include diffuse large B-cell lymphoma (DLBCL) and rare cases of T-cell lymphoma, including anaplastic large cell lymphoma and breast implant-associated anaplastic large cell lymphoma extending to the anterior mediastinum. Primary pleural and cardiac NHLs are mostly DLBCLs. Other rare subtypes of PM-NHLs include DLBCL associated with chronic inflammation/pyothorax-associated lymphoma, fibrin-associated DLBCL (both EBV), and pleural and/or pericardial primary effusion lymphoma (HHV-8/EBV). We review the historical aspects, epidemiology, clinico-radiologic features, histopathology, immunohistochemistry, differential diagnosis, and relevant cytogenetic and molecular features of PM (thymic) LBCL, PM "nonthymic" DLBCL, BCL, unclassifiable, with features intermediate between DLBCL and classic Hodgkin lymphoma (mediastinal gray zone lymphoma), DLBCL associated with chronic inflammation (pyothorax-associated lymphoma), fibrin-associated DLBCL, and primary effusion lymphoma. This review represents the first part of 2 manuscripts covering PM-NHLs.
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20
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Lees C, Keane C, Gandhi MK, Gunawardana J. Biology and therapy of primary mediastinal B-cell lymphoma: current status and future directions. Br J Haematol 2019; 185:25-41. [PMID: 30740662 PMCID: PMC6594147 DOI: 10.1111/bjh.15778] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Primary mediastinal B-cell lymphoma (PMBCL) is a distinct disease closely related to classical nodular sclerosing Hodgkin lymphoma. Conventional diagnostic paradigms utilising clinical, morphological and immunophenotypical features can be challenging due to overlapping features with other B-cell lymphomas. Reliable diagnostic and prognostic biomarkers that are applicable to the conventional diagnostic laboratory are largely lacking. Nuclear factor kappa B (NF-κB) and Janus kinase/signal transducers and activators of transcription (JAK-STAT) signalling pathways are characteristically dysregulated in PMBCL and implicated in several aspects of disease pathogenesis, and the latter pathway in host immune evasion. The tumour microenvironment is manipulated by PMBCL tumours to avoid T-cell mediated destruction via strategies that include loss of tumour cell antigenicity, T-cell exhaustion and activation of suppressive T-regulatory cells. R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, prednisolone) and DA-EPOCH-R (dose-adjusted etoposide, prednisolone, vincristine, cyclophosphamide, doxorubicin, rituximab) are the most common first-line immunochemotherapy regimens. End of treatment positron emission tomography scans are the recommended imaging modality and are being evaluated to stratify patients for radiotherapy. Relapsed/refractory disease has a relatively poor outcome despite salvage immunochemotherapy and subsequent autologous stem cell transplantation. Novel therapies are therefore being developed for treatment-resistant disease, targeting aberrant cellular signalling and immune evasion.
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Affiliation(s)
- Charlotte Lees
- Blood Cancer Research GroupMater ResearchUniversity of QueenslandTranslational Research InstituteBrisbaneQLDAustralia
- Princess Alexandra Hospital Southside Clinical UnitFaculty of MedicineUniversity of QueenslandTranslational Research InstituteBrisbaneQLDAustralia
| | - Colm Keane
- Blood Cancer Research GroupMater ResearchUniversity of QueenslandTranslational Research InstituteBrisbaneQLDAustralia
- Department of HaematologyPrincess Alexandra HospitalBrisbaneQLDAustralia
| | - Maher K. Gandhi
- Blood Cancer Research GroupMater ResearchUniversity of QueenslandTranslational Research InstituteBrisbaneQLDAustralia
- Department of HaematologyPrincess Alexandra HospitalBrisbaneQLDAustralia
| | - Jay Gunawardana
- Blood Cancer Research GroupMater ResearchUniversity of QueenslandTranslational Research InstituteBrisbaneQLDAustralia
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21
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Cyclin D1-positive Mediastinal Large B-Cell Lymphoma With Copy Number Gains of CCND1 Gene. Am J Surg Pathol 2019; 43:110-120. [DOI: 10.1097/pas.0000000000001154] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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22
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Sturgis CD, Monaco SE, Sakr H, Pantanowitz L. Cytologic perspectives on neoteric B-cell lymphoproliferative disorders. Diagn Cytopathol 2017; 45:1005-1019. [PMID: 28594112 DOI: 10.1002/dc.23766] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 05/09/2017] [Accepted: 05/17/2017] [Indexed: 12/16/2022]
Abstract
The 2008 World Health Organization (WHO) classification of hematopoietic and lymphoid tissues has been recently revised, and publication of the updated 2016 version is expected soon. Given that cytopathologists are often involved in the diagnosis of primary, recurrent, and transformed lymphoproliferative disorders, knowledge of updates to the WHO lymphoma classification, including terminology, pathogenesis, ancillary techniques, and targeted therapies is necessary. Herein, we reference the last decade of cytology specific literature for seven newer B-cell disorders and provide illustrative examples of each entity from our files.
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Affiliation(s)
| | - Sara E Monaco
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA
| | - Hany Sakr
- Department of Pathology, Cleveland Clinic, Cleveland, OH
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23
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Flies AS, Blackburn NB, Lyons AB, Hayball JD, Woods GM. Comparative Analysis of Immune Checkpoint Molecules and Their Potential Role in the Transmissible Tasmanian Devil Facial Tumor Disease. Front Immunol 2017; 8:513. [PMID: 28515726 PMCID: PMC5413580 DOI: 10.3389/fimmu.2017.00513] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Accepted: 04/18/2017] [Indexed: 12/13/2022] Open
Abstract
Immune checkpoint molecules function as a system of checks and balances that enhance or inhibit immune responses to infectious agents, foreign tissues, and cancerous cells. Immunotherapies that target immune checkpoint molecules, particularly the inhibitory molecules programmed cell death 1 and cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), have revolutionized human oncology in recent years, yet little is known about these key immune signaling molecules in species other than primates and rodents. The Tasmanian devil facial tumor disease is caused by transmissible cancers that have resulted in a massive decline in the wild Tasmanian devil population. We have recently demonstrated that the inhibitory checkpoint molecule PD-L1 is upregulated on Tasmanian devil (Sarcophilus harrisii) facial tumor cells in response to the interferon-gamma cytokine. As this could play a role in immune evasion by tumor cells, we performed a thorough comparative analysis of checkpoint molecule protein sequences among Tasmanian devils and eight other species. We report that many of the key signaling motifs and ligand-binding sites in the checkpoint molecules are highly conserved across the estimated 162 million years of evolution since the last common ancestor of placental and non-placental mammals. Specifically, we discovered that the CTLA-4 (MYPPPY) ligand-binding motif and the CTLA-4 (GVYVKM) inhibitory domain are completely conserved across all nine species used in our comparative analysis, suggesting that the function of CTLA-4 is likely conserved in these species. We also found that cysteine residues for intra- and intermolecular disulfide bonds were also highly conserved. For instance, all 20 cysteine residues involved in disulfide bonds in the human 4-1BB molecule were also present in devil 4-1BB. Although many key sequences were conserved, we have also identified immunoreceptor tyrosine-based inhibitory motifs (ITIMs) and immunoreceptor tyrosine-based switch motifs (ITSMs) in genes and protein domains that have not been previously reported in any species. This checkpoint molecule analysis and review of salient features for each of the molecules presented here can serve as road map for the development of a Tasmanian devil facial tumor disease immunotherapy. Finally, the strategies can be used as a guide for veterinarians, ecologists, and other researchers willing to venture into the nascent field of wild immunology.
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Affiliation(s)
- Andrew S. Flies
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
- Department of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia
| | - Nicholas B. Blackburn
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
- School of Medicine, South Texas Diabetes and Obesity Institute, University of Texas Rio Grande Valley, Brownsville, TX, USA
| | - Alan Bruce Lyons
- School of Medicine, University of Tasmania, Hobart, TAS, Australia
| | - John D. Hayball
- Department of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia
- Discipline of Obstetrics and Gynaecology, School of Medicine, Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia
| | - Gregory M. Woods
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
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Wang Z, Cook JR. PDCD1LG2 (PD-L2) RNA in situ hybridization is a sensitive, specific, and practical marker of primary mediastinal large B-cell lymphoma. Br J Haematol 2017; 181:564-566. [PMID: 28369778 DOI: 10.1111/bjh.14670] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Zhen Wang
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - James R Cook
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
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Performance of a Commercially Available MAL Antibody in the Diagnosis of Primary Mediastinal Large B-Cell Lymphoma. Am J Surg Pathol 2017; 41:189-194. [DOI: 10.1097/pas.0000000000000771] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Tazawa S, Shiozawa E, Homma M, Arai N, Kabasawa N, Kawaguchi Y, Fujiwara S, Okino K, Kobayashi K, Yamochi T, Tate G, Nakamaki T, Takimoto M. CD200 Expression on Plasma Cell Myeloma Cells is Associated with the Efficacies of Bortezomib, Lenalidomide and Thalidomide. J Clin Exp Hematop 2016; 55:121-6. [PMID: 26763359 DOI: 10.3960/jslrt.55.121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Plasma cell myeloma (PCM) is a devastating disease with a highly heterogeneous outcome, with survival ranging from a few months to longer than 10 years. Treatment of multiple myeloma has changed markedly in the past decade due to the development of new drugs such as bortezomib, lenalidomide and thalidomide, which have greatly improved the outcome of PCM. The clinical and prognostic value of immunophenotyping in PCM remains questionable. The aim of this study was to determine the diagnostic and prognostic significance of CD200 expression in newly diagnosed PCM. We retrospectively reviewed the records of 107 patients newly diagnosed with PCM at Showa University Hospital between January 2004 and September 2013. Expression of CD200 was studied by immunohistochemistry. Clinical and pathological parameters were compared between CD200-positive and CD200-negative cases. CD200-positive PCM cases had lower serum albumin (p = 0.0001) compared to those without CD200 expression. Our results showed no significant difference in median overall survival between patients with CD200-positive and CD200-negative PCM. However, there was a strong correlation between CD200 expression and serum albumin level. In the CD200-negative group, median overall survival was significantly longer in patients who received new drug treatment. These findings suggest that CD200 expression is a useful marker for evaluation of the severity of PCM and that lack of CD200 expression may improve the sensitivity of PCM to therapy with new drugs.
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Affiliation(s)
- Sakiko Tazawa
- Department of Pathology and Laboratory Medicine, Showa University School of Medicine
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Abstract
Diffuse large B-cell lymphoma (DLBCL) is an aggressive disease with considerable heterogeneity reflected in the 2008 World Health Organization classification. In recent years, genome-wide assessment of genetic and epigenetic alterations has shed light upon distinct molecular subsets linked to dysregulation of specific genes or pathways. Besides fostering our knowledge regarding the molecular complexity of DLBCL types, these studies have unraveled previously unappreciated genetic lesions, which may be exploited for prognostic and therapeutic purposes. Following the last World Health Organization classification, we have witnessed the emergence of new variants of specific DLBCL entities, such as CD30 DLBCL, human immunodeficiency virus-related and age-related variants of plasmablastic lymphoma, and EBV DLBCL arising in young patients. In this review, we will present an update on the clinical, pathologic, and molecular features of DLBCL incorporating recently gained information with respect to their pathobiology and prognosis. We will emphasize the distinctive features of newly described or emerging variants and highlight advances in our understanding of entities presenting a diagnostic challenge, such as T-cell/histiocyte-rich large B-cell lmphoma and unclassifiable large B-cell lymphomas. Furthermore, we will discuss recent advances in the genomic characterization of DLBCL, as they may relate to prognostication and tailored therapeutic intervention. The information presented in this review derives from English language publications appearing in PubMed throughout December 2015. For a complete outline of this paper, please visit: http://links.lww.com/PAP/A12.
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Abstract
Abstract
The diffuse aggressive large B-cell lymphomas are a heterogeneous group of B-cell malignancies. Although many are readily recognized due to characteristic clinical and pathologic features, several problematic areas still exist in diagnosis of these lymphomas due to a variety of reasons that include imprecise or difficult-to-apply diagnostic criteria, gaps in our understanding of lymphoma biology, and limitations in technologies available in the clinical laboratory compared to the research laboratory. This may result in some degree of confusion in the pathology report, particularly if the issues are not clearly explained, leading to frustration or misinterpretation on the part of the reader. In this review, I will discuss the pathologic features of a subset of the WHO 2008 classification diffuse aggressive large B-cell lymphomas, focusing on areas in which difficulties exist in diagnosis and/or biomarker marker assessment. A deeper understanding of the issues and areas of uncertainty due to limitations in our knowledge about the biology of these diseases should lead to better communication between pathologists and clinicians.
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Bohling SD, Davis E, Thompson K, Kussick SJ, Love J. Flow cytometric analysis of CD200 expression by pulmonary small cell carcinoma. CYTOMETRY PART B-CLINICAL CYTOMETRY 2015; 90:493-498. [PMID: 26584149 DOI: 10.1002/cyto.b.21340] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 09/04/2015] [Accepted: 11/11/2015] [Indexed: 11/10/2022]
Abstract
BACKGROUND CD200 is a membrane bound glycoprotein that is expressed by a variety of normal tissues and hematopoietic malignancies. Flow cytometric analysis of CD200 expression has utility in the evaluation of mature B-cell neoplasms, myeloma, and acute leukemia; however, CD200 expression in nonhematopoietic malignancies has not been extensively studied. METHODS We studied 14 cases of biopsy proven pulmonary small cell carcinoma in which a discrete CD45 negative, CD56 positive abnormal cell population was identified by flow cytometry. We retrospectively evaluated these cases for flow cytometric and immunohistochemical evidence of CD200 expression. RESULTS Twelve of the 14 cases of pulmonary small cell carcinoma showed convincing expression of CD200 by both immunohistochemistry and flow cytometry. CONCLUSIONS Pulmonary small cell carcinoma frequently expresses CD200 at a level that can be detected by flow cytometry and immunohistochemistry. CD200 expression therefore may be used to help identify pulmonary small cell carcinoma in flow cytometry specimens and tissue sections. CD200 may also play a role in the biology of pulmonary small cell carcinoma and is a potential target of future therapies. © 2015 International Clinical Cytometry Society.
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Affiliation(s)
| | - Evan Davis
- Multicare Health System, Tacoma, Washington
| | | | | | - Jason Love
- Western Washington Pathology, Tacoma, Washington
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Sorigue M, Junca J, Granada I. CD200 in High-Grade Lymphoma, Chronic Lymphocytic Leukemia, and Chronic Lymphocytic Leukemia-Phenotype Monoclonal B-Cell Lymphocytosis. Am J Clin Pathol 2015; 144:677-9. [PMID: 26386092 DOI: 10.1309/ajcpo2kkfhoexnzf] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Primary mediastinal large B-cell lymphoma. Cancer Treat Rev 2015; 41:476-85. [PMID: 25913715 DOI: 10.1016/j.ctrv.2015.04.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/09/2015] [Accepted: 04/12/2015] [Indexed: 11/24/2022]
Abstract
The management of primary mediastinal large B-cell lymphoma (PMBCL) requires a balance between optimizing chances of cure and reducing risk of long-term toxicities. The combination of rituximab to cyclophosphamide, doxorubicin, vincristine and prednisone (RCHOP) followed by mediastinal radiation results in a plateau in progression-free survival after first few years of follow-up. In rituximab era, a negative positron emission tomography (PET) scan performed after the completion of immunochemotherapy has a high predictive value for durable remission. Consequently, end-of-therapy PET may be utilizable to avoid radiation without compromising survival. Additionally, intensified chemotherapy alone has shown excellent survival. PMBCL is frequently associated with amplification of programmed death ligand (PDL) 1/2 and constitutive activation of JAK-STAT and NFKB pathways; these may serve as promising therapeutic targets. Clinical trials that integrate novel therapies into upfront immunochemotherapy and utilize end-of-therapy PET scan to guide mediastinal radiation have potential to further enhance survival and prevent long-term toxicities.
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Twa DDW, Steidl C. Structural genomic alterations in primary mediastinal large B-cell lymphoma. Leuk Lymphoma 2015; 56:2239-50. [DOI: 10.3109/10428194.2014.985673] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Expression of programmed cell death 1 ligand 2 (PD-L2) is a distinguishing feature of primary mediastinal (thymic) large B-cell lymphoma and associated with PDCD1LG2 copy gain. Am J Surg Pathol 2015; 38:1715-23. [PMID: 25025450 DOI: 10.1097/pas.0000000000000297] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Primary mediastinal (thymic) large B-cell lymphoma (PMBL) and diffuse large B-cell lymphoma (DLBCL) are tumors with distinct clinical and molecular characteristics that are difficult to distinguish by histopathologic and phenotypic analyses alone. Programmed cell death 1 ligand 2 (PD-L2) is a cell surface protein expressed by activated macrophages and dendritic cells that binds PD-1 on T cells to inhibit immune responses. Amplification and/or translocations involving chromosome 9p24.1, a region that includes PDCD1LG2-encoding PD-L2, is a common event in PMBL but not DLBCL and suggests that PD-L2 expression might be a distinguishing feature of PMBL. We developed an assay for the immunohistochemical detection of PD-L2 protein in fixed biopsy specimens (PD-L2 IHC), which we applied to a cohort of PMBLs and DLBCLs. For a subset of cases, we correlated the results of PD-L2 IHC with PDCD1LG2 copy number (CN) as determined by quantitative polymerase chain reaction. Twenty-three of 32 (72%) PMBLs but only 1 of 37 (3%) DLBCLs were positive by PD-L2 IHC. Among PMBLs with PDCD1LG2 CN gain, all were positive by PD-L2 IHC. One PMBL without CN gain was positive by PD-L2 IHC. When expressed in PMBL, PD-L2 was restricted to tumor cells and not detected on intratumoral macrophages. We conclude that PD-L2 protein is robustly expressed by the majority of PMBLs but only rare DLBCLs and often associated with PDCD1LG2 copy gain. PD-L2 IHC may serve as a useful ancillary test for distinguishing PMBL from DLBCL and for the rational selection of patients for therapeutic antibodies that inhibit PD-1 signaling.
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