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Miranda RN, Amador C, Chan JKC, Guitart J, Rech KL, Medeiros LJ, Naresh KN. Fifth Edition of the World Health Organization Classification of Tumors of the Hematopoietic and Lymphoid Tissues: Mature T-Cell, NK-Cell, and Stroma-Derived Neoplasms of Lymphoid Tissues. Mod Pathol 2024; 37:100512. [PMID: 38734236 DOI: 10.1016/j.modpat.2024.100512] [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: 12/31/2023] [Revised: 04/14/2024] [Accepted: 05/02/2024] [Indexed: 05/13/2024]
Abstract
This review focuses on mature T cells, natural killer (NK) cells, and stroma-derived neoplasms in the fifth edition of the World Health Organization classification of hematolymphoid tumors, including changes from the revised fourth edition. Overall, information has expanded, primarily due to advancements in genomic understanding. The updated classification adopts a hierarchical format. The updated classification relies on a multidisciplinary approach, incorporating insights from a diverse group of pathologists, clinicians, and geneticists. Indolent NK-cell lymphoproliferative disorder of the gastrointestinal tract, Epstein-Barr virus-positive nodal T- and NK-cell lymphoma, and several stroma-derived neoplasms of lymphoid tissues have been newly introduced or included. The review also provides guidance on how the fifth edition of the World Health Organization classification of hematolymphoid tumors can be applied in routine clinical practice.
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Affiliation(s)
- Roberto N Miranda
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Catalina Amador
- Department of Pathology, University of Miami, Miami, Florida
| | - John K C Chan
- Department of Pathology, Queen Elizabeth Hospital, Kowloon, Hong Kong
| | - Joan Guitart
- Department of Dermatology, Northwestern University Feinberg Medical School, Chicago, Illinois
| | - Karen L Rech
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kikkeri N Naresh
- Section of Pathology, Translational Science and Therapeutics Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Laboratory Medicine & Pathology, University of Washington, Seattle, Washington.
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2
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Ondrejka SL, Amador C, Climent F, Ng SB, Soma L, Zamo A, Dirnhofer S, Quintanilla-Martinez L, Wotherspoon A, Leoncini L, de Leval L. Follicular helper T-cell lymphomas: disease spectrum, relationship with clonal hematopoiesis, and mimics. A report of the 2022 EA4HP/SH lymphoma workshop. Virchows Arch 2023; 483:349-365. [PMID: 37500795 PMCID: PMC10541838 DOI: 10.1007/s00428-023-03607-5] [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: 06/07/2023] [Revised: 06/30/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
Follicular helper T-cell lymphomas (TFH lymphomas) were discussed in session V of the lymphoma workshop of the European Association for Haematopathology (EA4HP)/Society for Hematopathology (SH) 2022 meeting in Florence, Italy. The session focused on the morphologic spectrum of TFH lymphoma, including its three subtypes: angioimmunoblastic-type (AITL), follicular-type, and not otherwise specified (NOS). The submitted cases encompassed classic examples of TFH lymphoma and unusual cases such as those with early or indolent presentations, associated B-cell proliferations, or Hodgkin/Reed-Sternberg-like cells. The relationship between TFH lymphoma and clonal hematopoiesis was highlighted by several cases documenting divergent evolution of myeloid neoplasm and AITL from shared clonal mutations. The distinction between TFH lymphoma and peripheral T-cell lymphoma, not otherwise specified (PTCL, NOS), was stressed, and many challenging examples were presented. Various cases highlighted the difficulties of differentiating TFH lymphoma from other established types of lymphoma and reactive conditions. Cutaneous T-cell lymphoma expressing TFH markers, particularly when resulting in lymph node involvement, should be distinguished from TFH lymphomas. Additional immunophenotyping and next-generation sequencing studies were performed on various cases in this session, highlighting the importance of these technologies to our current understanding and classification of TFH lymphomas.
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Affiliation(s)
- Sarah L Ondrejka
- Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Catalina Amador
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, University of Miami, Miami, FL, USA
| | - Fina Climent
- Pathology Department, Hospital Universitari de Bellvitge, IDIBELL, L'Hospitalet De Llobregat, Barcelona, Spain
| | - Siok-Bian Ng
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Lorinda Soma
- Department of Pathology, City of Hope National Medical Center, Duarte, CA, USA
| | - Alberto Zamo
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Stefan Dirnhofer
- Institute of Medical Genetics and Pathology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, Eberhard Karls University of Tübingen and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
| | | | - Lorenzo Leoncini
- Department of Medical Biotechnology, University of Siena, Siena, Italy
| | - Laurence de Leval
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland.
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3
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Donzel M, Trecourt A, Balme B, Harou O, Mauduit C, Bachy E, Guesquières H, Fontaine J, Ortonne N, Perier-Muzet M, Dalle S, Traverse-Glehen A. Deciphering the spectrum of cutaneous lymphomas expressing TFH markers. Sci Rep 2023; 13:6500. [PMID: 37081015 PMCID: PMC10119163 DOI: 10.1038/s41598-023-33031-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 04/06/2023] [Indexed: 04/22/2023] Open
Abstract
T-follicular helper (TFH) markers are expressed in the microenvironnement of marginal zone B-cell lymphoma (MZL), and in lymphomas arising from TFH-cells, sometimes making the differential diagnosis difficult. In the skin, the "TFH-spectrum" is poorly defined, going from primary cutaneous lymphoproliferative disorder with small/medium CD4+ T-cells (SMLPD) to cutaneous localizations of systemic angioimmunoblastic T-cell lymphoma (cAITL), and may pass through intermediate forms (primary cutaneous T-follicular helper derived lymphoma, not otherwise specified (PCTFHL,NOS)). We retrospectively analyzed 20 MZL, 13 SMLPD, 5 PCTFHL, and 11 cAITL clinically, histologically, and molecularly, to define tools to differentiate them. Characteristics that might favor the diagnosis of MZL over SMLPD are: multiple skin nodules (p < 0.001), nodular architecture (p < 0.01), residual germinal centers with follicular dendritic cell network (p < 0.001), monotypic plasma cells (p < 0.001), and few staining with PD1 (p = 0.016) or CXCL13 (p = 0.03). PCTFHL and cAITL presented as multiple (p < 0.01) lesions, in older patients (p < 0.01), with systemic symptoms and/or biological alterations (p < 0.01). Immunophenotypic loss of T-cell markers (p < 0.001), BCL6 (p = 0.023) and/or CD10 staining (p = 0.08), and a higher proliferative index (≥ 30%, p = 0.039) favoured these diagnoses over SMLPD. Pathogenic variants were observed by genomic sequencing in 47% of MZL (TNFAIP3 (32%), EP300 (21%), NOTCH2 (16%), KMT2D (16%), CARD11 (10.5%)), 8% of SMLPD (TET2), 40% of PCTFHL (SOCS1 (20%), ARID1A (20%)) and 64% of cAITL (TET2 (63.6%), RHOA (36.4%), NOTCH1 (9%)). This study characterizes the various clinical and histological features between cutaneous lymphomas expressing TFH markers and highlights the value of the interest of screening for genomic mutations in difficult cases.
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Affiliation(s)
- Marie Donzel
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France.
| | - Alexis Trecourt
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France
| | - Brigitte Balme
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France
| | - Olivier Harou
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France
| | - Claire Mauduit
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France
| | - Emmanuel Bachy
- Hospices Civils de Lyon, Cancer Research Center of Lyon, INSERM U1052, CNRS UMR 5286, CLB, UCBL, Université Lyon 1, Lyon, France
- Hospices Civils de Lyon, Service d'Hématologie, Hôpital Lyon Sud, Lyon, France
| | - Hervé Guesquières
- Hospices Civils de Lyon, Cancer Research Center of Lyon, INSERM U1052, CNRS UMR 5286, CLB, UCBL, Université Lyon 1, Lyon, France
- Hospices Civils de Lyon, Service d'Hématologie, Hôpital Lyon Sud, Lyon, France
| | - Juliette Fontaine
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France
| | - Nicolas Ortonne
- Biological Immunology, APHP Henri Mondor Hospital, Paris Est Creteil University (UPEC) and INSERM U955 Team Ortonne (NFL), Créteil, France
- Department of Dermatology, APHP Henri Mondor Hospital, Créteil, France
| | - Marie Perier-Muzet
- Hospices Civils de Lyon, Service de Dermatologie, Hôpital Lyon Sud, Lyon, France
| | - Stéphane Dalle
- Hospices Civils de Lyon, Cancer Research Center of Lyon, INSERM U1052, CNRS UMR 5286, CLB, UCBL, Université Lyon 1, Lyon, France
- Hospices Civils de Lyon, Service de Dermatologie, Hôpital Lyon Sud, Lyon, France
| | - Alexandra Traverse-Glehen
- Institut de Pathologie multisites, Hospices Civils de Lyon, Hôpital Lyon Sud, 165 Chemin du Grand Revoyet, 69310, Lyon, Pierre-Bénite, France
- Hospices Civils de Lyon, Cancer Research Center of Lyon, INSERM U1052, CNRS UMR 5286, CLB, UCBL, Université Lyon 1, Lyon, France
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Spigariolo CB, Berti E, Cerri A, Venegoni L, Croci G, Violetti SA. T follicular helper phenotype mycosis fungoides associated with acanthosis nigricans. J Cutan Pathol 2023; 50:420-424. [PMID: 36764679 DOI: 10.1111/cup.14405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/30/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023]
Abstract
The association between acanthosis nigricans (AN) and mycosis fungoides (MF) has rarely been described, but it is known that MF may appear as AN-like vegetating and papillomatous plaques in skin folds, or may be associated with paraneoplastic AN. There have also been recent descriptions of a form of "intertriginous MF" that is characterized by skin fold involvement and the expression of T follicular helper (TFH) markers, and that often has an aggressive course. We describe the case of a 48-year-old man affected by MF associated with AN, whose lesions were characterized by a TFH immunophenotype and the expression of the GATA-3 nuclear master regulator that may be related to a TFH-2 subpopulation or possible disease progression.
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Affiliation(s)
- Cristina B Spigariolo
- Unit of Dermatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Emilio Berti
- Unit of Dermatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Amilcare Cerri
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.,Dermatology Unit, ASST Santi Paolo e Carlo, Milan, Italy
| | - Luigia Venegoni
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giorgio Croci
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.,Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Silvia Alberti Violetti
- Unit of Dermatology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
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Wang L, Rocas D, Dalle S, Sako N, Pelletier L, Martin N, Dupuy A, Tazi N, Balme B, Vergier B, Beylot-Barry M, Carlotti A, Bagot M, Battistella M, Chaby G, Ingen-Housz-Oro S, Gaulard P, Ortonne N. Primary cutaneous peripheral T-cell lymphomas with a T-follicular helper phenotype: an integrative clinical, pathological and molecular case series study. Br J Dermatol 2022; 187:970-980. [PMID: 35895386 PMCID: PMC10087773 DOI: 10.1111/bjd.21791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/04/2022] [Accepted: 07/22/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Primary cutaneous peripheral T-cell lymphomas with a T-follicular helper phenotype (pcTFH-PTCL) are poorly characterized, and often compared to, but not corresponding with, mycosis fungoides (MF), Sézary syndrome, primary cutaneous CD4+ lymphoproliferative disorder, and skin manifestations of angioimmunoblastic T-cell lymphomas (AITL). OBJECTIVES We describe the clinicopathological features of pcTFH-PTCL in this original series of 23 patients, and also characterize these cases molecularly. METHODS Clinical and histopathological data of the selected patients were reviewed. Patient biopsy samples were also analysed by targeted next-generation sequencing. RESULTS All patients (15 men, eight women; median age 66 years) presented with skin lesions, without systemic disease. Most were stage T3b, with nodular (n = 16), papular (n = 6) or plaque (atypical for MF, n = 1) lesions. Three (13%) developed systemic disease and died of lymphoma. Nine (39%) patients received more than one line of chemotherapy. Histologically, the lymphomas were CD4+ T-cell proliferations, usually dense and located in the deep dermis (n = 14, 61%), with the expression of at least two TFH markers (CD10, CXCL13, PD1, ICOS, BCL6), including three markers in 16 cases (70%). They were associated with a variable proportion of B cells. Eight patients were diagnosed with an associated B-cell lymphoproliferative disorder (LPD) on biopsy, including Epstein-Barr virus (EBV)-positive diffuse large B-cell lymphoma (n = 3), EBV+ LPD (n = 1) and monotypic plasma cell LPD (n = 4). Targeted sequencing showed four patients to have a mutated TET2-RHOAG17V association (as frequently seen in AITL) and another a TET2/DNMT3A/PLCG1/SETD2 mutational profile. The latter patient, one with a TET2-RHOA association, and one with no detected mutations, developed systemic disease and died. Five other patients showed isolated mutations in TET2 (n = 1), PLCG1 (n = 2), SETD2 (n = 1) or STAT5B (n = 1). CONCLUSIONS Patients with pcTFH-PTCL have pathological and genetic features that overlap with those of systemic lymphoma of TFH derivation. Clinically, most remained confined to the skin, with only three patients showing systemic spread and death. Whether pcTFH-PTCL should be integrated as a new subgroup of TFH lymphomas in future classifications is still a matter of debate. What is already known about this topic? There is a group of cutaneous lymphomas that express T-follicular helper (TFH) markers that do not appear to correspond to existing World Health Organization diagnostic entities. These include mycosis fungoides, Sézary syndrome, or primary cutaneous CD4+ small/medium-sized T-cell lymphoproliferative disorder or cutaneous extensions of systemic peripheral T-cell lymphomas (PTCL) with TFH phenotype. What does this study add? This is the first large original series of patients with a diagnosis of primary cutaneous PTCL with a TFH phenotype (pcTFH-PTCL) to be molecularly characterized. pcTFH-PTCL may be a standalone group of cutaneous lymphomas with clinicopathological and molecular characteristics that overlap with those of systemic TFH lymphomas, such as angioimmunoblastic T-cell lymphoma, and does not belong to known diagnostic groups of cutaneous lymphoma. This has an impact on the treatment and follow-up of patients; the clinical behaviour needs to be better clarified in further studies to tailor patient management.
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Affiliation(s)
- Luojun Wang
- Department of Pathology, Assistance Publique - Hôpitaux de Paris, Henri-Mondor Hospital, 94010, Créteil, France.,INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
| | - Delphine Rocas
- Department of Pathology, Lyon Sud, Pierre-Bénite Hospital, 69495, Lyon, France
| | - Stéphane Dalle
- Department of Dermatology, Lyon Sud, Pierre-Bénite Hospital, 69495, Lyon, France
| | - Nouhoum Sako
- INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
| | - Laura Pelletier
- INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
| | - Nadine Martin
- INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
| | - Aurélie Dupuy
- INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
| | - Nadia Tazi
- Department of Pathology, Assistance Publique - Hôpitaux de Paris, Henri-Mondor Hospital, 94010, Créteil, France
| | - Brigitte Balme
- Department of Pathology, Lyon Sud, Pierre-Bénite Hospital, 69495, Lyon, France
| | - Béatrice Vergier
- Department of Pathology, CHU de Bordeaux, Haut-Lévêque Hospital, 33600, Pessac, France.,INSERM, U1312, Université de Bordeaux, 33000, Bordeaux, France
| | - Marie Beylot-Barry
- INSERM, U1312, Université de Bordeaux, 33000, Bordeaux, France.,Department of Dermatology, CHU de Bordeaux, Saint-André Hospital, 33000, Bordeaux, France
| | - Agnès Carlotti
- Department of Pathology, Assistance Publique - Hôpitaux de Paris, Cochin Hospital, 75014, Paris, France
| | - Martine Bagot
- Department of Dermatology, Assistance Publique - Hôpitaux de Paris, Saint-Louis Hospital, 75010, Université Paris Cité, Paris, France
| | - Maxime Battistella
- Department of Pathology, Assistance Publique - Hôpitaux de Paris, Saint-Louis Hospital, 75010, Université Paris Cité, Paris, France
| | - Guillaume Chaby
- Department of Dermatology, CHU d'Amiens-Picardie, Hôpital Sud, 80054, Amiens, France
| | - Saskia Ingen-Housz-Oro
- Department of Dermatology, Assistance Publique - Hôpitaux de Paris, Henri-Mondor Hospital, 94010, Créteil, France
| | - Philippe Gaulard
- Department of Pathology, Assistance Publique - Hôpitaux de Paris, Henri-Mondor Hospital, 94010, Créteil, France.,INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
| | - Nicolas Ortonne
- Department of Pathology, Assistance Publique - Hôpitaux de Paris, Henri-Mondor Hospital, 94010, Créteil, France.,INSERM U955 Institut Mondor de Recherche Biomédicale (IMRB), Paris Est Créteil University, 94010, Créteil, France
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Shameli A, Roshan TM. CD200 expression on Sezary cells: A valuable tool for flow cytometric assessment of peripheral blood T-cell neoplasms. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2022; 102:303-311. [PMID: 35661398 DOI: 10.1002/cyto.b.22080] [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: 12/11/2021] [Revised: 05/01/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND CD200 (OX-2) is a valuable marker in the diagnosis of B-cell neoplasms and is commonly used in the screening panels for assessment of peripheral blood B-cell lymphoproliferative disorders. However, there is limited understanding about CD200 expression in T-cell neoplasms. A previous study has shown that CD200 is expressed on the neoplastic cells of angioimmunoblastic T-cell lymphoma (AITL) by immunohistochemistry, but no study has evaluated CD200 expression in T-cell neoplasms by flow cytometry. METHODS We assessed CD200 expression in peripheral blood T-cell lymphoproliferative disorders by retrospective analysis of our institutional flow cytometry screening database over a 6-year period. RESULTS In addition to AITL, we identified CD200 expression in a significant number of mycosis fungoides/Sezary syndrome cases (58%, 19 of 33 samples), while most other T-cell neoplasms were negative for CD200. These findings were confirmed by CD200 immunohistochemical staining of tissue specimens from our patient cohort. CONCLUSIONS CD200 is commonly expressed on circulating Sezary cells, a feature that can potentially improve the diagnostic value of flow cytometry for assessment of T-cell neoplasms.
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Affiliation(s)
- Afshin Shameli
- Division of Hematopathology, Alberta Precision Laboratories, South Zone and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Tariq M Roshan
- Division of Hematopathology, Alberta Precision Laboratories, South Zone and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, Alberta, Canada
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7
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Mitteldorf C. Multistaining for a better understanding of lymphoma biology. Br J Dermatol 2022; 187:139-140. [PMID: 35508376 DOI: 10.1111/bjd.21590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christina Mitteldorf
- Department for Dermatology, Venereology and Allergology, University Medical Centre Göttingen, Göttingen, Niedersachsen, Germany
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8
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Pileri A, Tabanelli V, Fuligni F, Agostinelli C, Guglielmo A, Sabattini E, Grandi V, Pileri SA, Pimpinelli N. PD-1 and PD-L1 expression in mycosis fungoides and Sézary Syndrome. Ital J Dermatol Venerol 2022; 157:355-362. [PMID: 35373781 DOI: 10.23736/s2784-8671.22.07275-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The mechanisms involved in mycosis fungoides and Sezary Syndrome progression are largely unknown. Over the last decade the interest in immune system contrast of neoplasm has grown owing to the introduction of immunotherapy. PD-1 and its ligand (PD-L1) are the target of several immunotherapy treatment. In the literature reports on the expression of PD-1 and PD-L1 have provided contrasting results. METHODS In our analysis we investigated PD-1 expression in neoplastic cells and in tumour infiltrating lymphocytes (TILs) as well as PD-L1 expression in tumour cells and in tumour associated macrophages (TAMs). PD-L1 and PD-1 positive cells were counted in 5 high-power fields (HPF) and scored as the average number of positive neoplastic cells/TILs/TAMs per HPF. RESULTS From databases of two institutions (Bologna and Florence) thirty-five patients corresponding to 43 biopsies were retrieved. In seven instances sequential biopsies were present. No statistically significant expression was observed comparing early to advanced stages by analysing PD-1 by tumour cells and TILs and of PD-L1 by tumour cells and TAMs. CONCLUSIONS Our results corroborate that PD-1 and PD-L1 expression is not stage-dependent in mycosis fungoides and Sezary syndrome. However, PD-1 and PD-L1 expression in affected patients provides a rationale to schedule anti PD-1/PD-L1 drugs.
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Affiliation(s)
- Alessandro Pileri
- Dermatology Unit, IRCCS Policlinico Sant'Orsola, Bologna, Italy - .,Dermatology Unit, Department of Experimental Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy -
| | - Valentina Tabanelli
- Division of Haematopathology, European Institute of Oncology (IEO) IRCCS, Milan, Italy
| | - Fabio Fuligni
- Department of Genetics and Genome Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Claudio Agostinelli
- Haematopathology Unit, Department of Experimental Diagnostic and Specialty Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy.,Haematopathology Unit, IRCCS Policlinico Sant'Orsola, Bologna, Italy
| | - Alba Guglielmo
- Dermatology Unit, IRCCS Policlinico Sant'Orsola, Bologna, Italy.,Dermatology Unit, Department of Experimental Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Elena Sabattini
- Haematopathology Unit, Department of Experimental Diagnostic and Specialty Medicine, S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Vieri Grandi
- Department of Health Sciences, Division of Dermatology, University of Florence, Florence, Italy
| | - Stefano A Pileri
- Division of Haematopathology, European Institute of Oncology (IEO) IRCCS, Milan, Italy
| | - Nicola Pimpinelli
- Department of Health Sciences, Division of Dermatology, University of Florence, Florence, Italy
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9
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Amir Ali A, Shameli A, Zhang C, Gniadecki R, Street L, Hardin J. Intertriginous mycosis fungoides with T follicular helper cell phenotype progressing to Sézary syndrome. Clin Exp Dermatol 2021; 47:751-753. [PMID: 34798679 DOI: 10.1111/ced.15022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 10/24/2021] [Accepted: 11/16/2021] [Indexed: 11/27/2022]
Abstract
This case report highlights the challenges in diagnosis and therapeutic options for an individual who initially presented with intertriginous mycosis fungoides with a T follicular helper cell phenotype, which later evolved to Sézary syndrome.
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Affiliation(s)
- A Amir Ali
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - A Shameli
- Division of Hematology, Alberta Precision Laboratories, South Zone and Department of Pathology and Laboratory Medicine, University of Calgary, Calgary, AB, Canada
| | - C Zhang
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - R Gniadecki
- Division of Dermatology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - L Street
- Division of Hematology, Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - J Hardin
- Division of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada
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Park J, Daniels J, Wartewig T, Ringbloom KG, Martinez-Escala ME, Choi S, Thomas JJ, Doukas PG, Yang J, Snowden C, Law C, Lee Y, Lee K, Zhang Y, Conran C, Tegtmeyer K, Mo SH, Pease DR, Jothishankar B, Kwok PY, Abdulla FR, Pro B, Louissaint A, Boggon TJ, Sosman J, Guitart J, Rao D, Ruland J, Choi J. Integrated genomic analyses of cutaneous T-cell lymphomas reveal the molecular bases for disease heterogeneity. Blood 2021; 138:1225-1236. [PMID: 34115827 PMCID: PMC8499046 DOI: 10.1182/blood.2020009655] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 05/20/2021] [Indexed: 11/20/2022] Open
Abstract
Cutaneous T-cell lymphomas (CTCLs) are a clinically heterogeneous collection of lymphomas of the skin-homing T cell. To identify molecular drivers of disease phenotypes, we assembled representative samples of CTCLs from patients with diverse disease subtypes and stages. Via DNA/RNA-sequencing, immunophenotyping, and ex vivo functional assays, we identified the landscape of putative driver genes, elucidated genetic relationships between CTCLs across disease stages, and inferred molecular subtypes in patients with stage-matched leukemic disease. Collectively, our analysis identified 86 putative driver genes, including 19 genes not previously implicated in this disease. Two mutations have never been described in any cancer. Functionally, multiple mutations augment T-cell receptor-dependent proliferation, highlighting the importance of this pathway in lymphomagenesis. To identify putative genetic causes of disease heterogeneity, we examined the distribution of driver genes across clinical cohorts. There are broad similarities across disease stages. Many driver genes are shared by mycosis fungoides (MF) and Sezary syndrome (SS). However, there are significantly more structural variants in leukemic disease, leading to highly recurrent deletions of putative tumor suppressors that are uncommon in early-stage skin-centered MF. For example, TP53 is deleted in 7% and 87% of MF and SS, respectively. In both human and mouse samples, PD1 mutations drive aggressive behavior. PD1 wild-type lymphomas show features of T-cell exhaustion. PD1 deletions are sufficient to reverse the exhaustion phenotype, promote a FOXM1-driven transcriptional signature, and predict significantly worse survival. Collectively, our findings clarify CTCL genetics and provide novel insights into pathways that drive diverse disease phenotypes.
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Affiliation(s)
- Joonhee Park
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Jay Daniels
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Tim Wartewig
- Institute of Clinical Chemistry and Pathobiochemistry, School of Medicine, Technical University of Munich, Munich, Germany
- Center for Translational Cancer Research (TranslaTUM), Munich, Germany
| | - Kimberly G Ringbloom
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | | | - Jane J Thomas
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | - Jingyi Yang
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Caroline Snowden
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Calvin Law
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Yujin Lee
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Katie Lee
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Yancong Zhang
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | - Kyle Tegtmeyer
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Samuel H Mo
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | - Balaji Jothishankar
- Department of Medicine, Section of Dermatology, University of Chicago Pritzker School of Medicine, Chicago, IL
| | - Pui-Yan Kwok
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA
| | - Farah R Abdulla
- Division of Dermatology, City of Hope Comprehensive Cancer Center, Duarte, CA
| | - Barbara Pro
- Division of Hematology/Oncology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Abner Louissaint
- Department of Pathology, Massachusetts General Hospital, Boston, MA
| | - Titus J Boggon
- Department of Pharmacology and
- Department of Molecular Biology and Biophysics, Yale University School of Medicine, New Haven, CT
| | - Jeffrey Sosman
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL
| | | | - Deepak Rao
- Division of Rheumatology, Inflammation, Immunity, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Jürgen Ruland
- Institute of Clinical Chemistry and Pathobiochemistry, School of Medicine, Technical University of Munich, Munich, Germany
- Center for Translational Cancer Research (TranslaTUM), Munich, Germany
- German Cancer Consortium (DKTK), Heidelberg, Germany; and
- German Center for Infection Research (DZIF), Munich, Germany
| | - Jaehyuk Choi
- Department of Dermatology, and
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL
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11
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Follicular T-cell lymphoma: a short review with brief discussion of other nodal lymphomas/lymphoproliferative disorders of T-follicular helper cell origin. J Hematop 2021. [DOI: 10.1007/s12308-021-00460-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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12
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Attygalle AD, Zamò A, Fend F, Johnston P, Arber DA, Laurent C. Challenges and limitations in the primary diagnosis of T-cell and natural killer cell/T-cell lymphoma in bone marrow biopsy. Histopathology 2020; 77:2-17. [PMID: 32064659 DOI: 10.1111/his.14093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Alberto Zamò
- Department of Oncology, University of Turin, Turin, Italy.,Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Falko Fend
- Institute of Pathology and Comprehensive Cancer Centre, Tübingen University Hospital, Tübingen, Germany
| | - Peter Johnston
- Department of Pathology, NHS Grampian, University of Aberdeen, NHS Education for Scotland, Aberdeen, UK
| | - Daniel A Arber
- Department of Pathology, University of Chicago, Chicago, IL, USA
| | - Camille Laurent
- Pathology and Cytology Department, Centre Hospitalo-Universitaire de Toulouse, Institut Universitaire du Cancer de Toulouse-Oncopole, Centre de Recherche en Cancerologie de Toulouse, Inserm, UMR1037 laboratoire d'excellence TOUCAN, Paul Sabatier University Toulouse III, Toulouse, France
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13
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Gru AA, McHargue C, Salavaggione AL. A Systematic Approach to the Cutaneous Lymphoid Infiltrates: A Clinical, Morphologic, and Immunophenotypic Evaluation. Arch Pathol Lab Med 2020; 143:958-979. [PMID: 31339758 DOI: 10.5858/arpa.2018-0294-ra] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT.— The evaluation of cutaneous lymphoid infiltrates, both neoplastic and inflammatory, occurs very frequently in routine dermatopathologic examination and consultation practices. The "tough" cutaneous lymphoid infiltrate is feared by many pathologists; skin biopsies are relatively small, whereas diagnostic possibilities are relatively broad. It is true that cutaneous lymphomas can be difficult to diagnose and that in many circumstances multiple biopsies are required to establish a correct diagnostic interpretation. As a reminder, one should understand that low-grade cutaneous lymphomas are indolent disorders that usually linger for decades and that therapy does not result in disease cure. It is also important to remember that in most circumstances, those patients will die from another process that is completely unrelated to a diagnosis of skin lymphoma (even in the absence of specific therapy). OBJECTIVE.— To use a clinicopathologic, immunophenotypic, and molecular approach in the evaluation of common lymphocytic infiltrates. DATA SOURCES.— An in-depth analysis of updated literature in the field of cutaneous lymphomas was done, with particular emphasis on updated terminology from the most recent World Health Organization classification of skin and hematologic tumors. CONCLUSIONS.— A diagnosis of cutaneous lymphoid infiltrates can be adequately approached using a systematic scheme following the proposed ABCDE system. Overall, cutaneous T- and B-cell lymphomas are rare and "reactive" infiltrates are more common. Evaluation of lymphoid proliferations should start with a good sense of knowledge of the clinical presentation of the lesions, the clinical differential considerations, and a conscientious and appropriate use of immunohistochemistry and molecular tools.
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Affiliation(s)
- Alejandro A Gru
- From the Departments of Pathology (Drs Gru and Salavaggione) and Dermatology (Dr Gru), University of Virginia, Charlottesville; and the Department of Dermatology (Dr McHargue), Henry Ford Health System, Detroit, Michigan
| | - Chauncey McHargue
- From the Departments of Pathology (Drs Gru and Salavaggione) and Dermatology (Dr Gru), University of Virginia, Charlottesville; and the Department of Dermatology (Dr McHargue), Henry Ford Health System, Detroit, Michigan
| | - Andrea L Salavaggione
- From the Departments of Pathology (Drs Gru and Salavaggione) and Dermatology (Dr Gru), University of Virginia, Charlottesville; and the Department of Dermatology (Dr McHargue), Henry Ford Health System, Detroit, Michigan
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14
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Piris MA, Rodriguez-Pinilla SM, Santonja C, Betancor I, Alonso-Alonso R, Gru AA, Rodriguez M. Update on peripheral T-cell lymphomas with T-helper phenotype: Are there too many subtypes? Semin Diagn Pathol 2019; 37:24-31. [PMID: 31870687 DOI: 10.1053/j.semdp.2019.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Follicular helper T (TFH) cells are the providers of T-cell help to B-cells in the development of germinal centers and for the generation of most class-switched antibodies. The markers most commonly associated with TFH activity are IL21, IL4, CD40L, BCL6, SAP, CXCR5/CXCL13, and ICOS. T-cell lymphoma genomic studies have shown that different T-cell lymphoma types express signatures typical for TFH cells, this including angioimmunoblastic T-cell lymphoma (AITL), a related condition termed peripheral T-cell lymphoma with TFH phenotype and primary cutaneous CD4+ small/medium T-cell lymphoproliferative disorder. Angioimmunoblastic T-cell lymphoma is a well-established entity, a clinically aggressive disease with a survival of 30% OS after 5 years. Molecular and clinical studies have confirmed this as a well-established clinicopathological entity with relatively specific gene mutations, including mutations found in hematopoietic precursor cells and others. Peripheral T-cell lymphoma with TFH phenotype is an associated disorder with histology of PTCL but a TFH phenotype, as defined by the expression of 2-3 immunohistochemical markers. Molecular studies on this entity are showing a partial overlap with AITL. Primary cutaneous CD4+ small/medium lymphoproliferative disorder is an entirely different process that takes place in the skin, showing frank cytologic atypia, monoclonal TCR rearrangement and TFH phenotype in the context of a clinically benign lesion. Here we review the main clinical, molecular and diagnostic features of these three lymphoproliferative processes.
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Affiliation(s)
- Miguel A Piris
- Servicio de Anatomía Patológica, Fundación Jiménez Díaz, CIBERONC, Madrid, Spain.
| | | | - Carlos Santonja
- Servicio de Anatomía Patológica, Fundación Jiménez Díaz, CIBERONC, Madrid, Spain
| | - Isabel Betancor
- Servicio de Anatomía Patológica, Fundación Jiménez Díaz, CIBERONC, Madrid, Spain
| | - Ruth Alonso-Alonso
- Servicio de Anatomía Patológica, Fundación Jiménez Díaz, CIBERONC, Madrid, Spain
| | - Alejandro A Gru
- Department of Pathology, University of Virginia, Charlottesville, VA, United States
| | - Marta Rodriguez
- Servicio de Anatomía Patológica, Fundación Jiménez Díaz, CIBERONC, Madrid, Spain
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15
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Gerlach MM, Juskevicius D, Vela V, Dirnhofer S, Tzankov A. Bone Marrow Infiltration of Angioimmunoblastic T-Cell Lymphoma: Identification and Prognostic Impact of Histologic Patterns and Diagnostic Application of Ancillary Phenotypic and Molecular Analyses. Arch Pathol Lab Med 2019; 144:602-611. [PMID: 31556696 DOI: 10.5858/arpa.2019-0007-oa] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Angioimmunoblastic T-cell lymphomas originate from T follicular helper cells and express respective markers (BCL6, CD10, CXCL13, ICOS, and PD-1). Although commonly present, bone marrow involvement by angioimmunoblastic T-cell lymphoma can be diagnostically challenging. Additionally, only little is known about the distribution of T follicular helper cells in healthy and reactively changed bone marrows or in samples affected by other lymphomas. OBJECTIVE.— To establish a diagnostic approach to reliably identify bone marrow infiltration of angioimmunoblastic T-cell lymphoma. DESIGN.— We analyzed the morphologic infiltration pattern and the expression of T follicular helper-cell markers in 42 matched paired lymph node and bone marrow samples and applied comparative clonality testing. Furthermore, we studied the expression of BCL6 and PD-1 in a control cohort of healthy, reactively changed, and otherwise affected bone marrows. RESULTS.— We identified 3 different bone marrow infiltration patterns correlating with overall survival (interstitial/micronodular infiltration with or without eosinophilia and diffuse infiltration with eosinophilia). The matched pairs showed a consistent (co)expression of PD-1 and BCL6 with a generally weaker expression in the bone marrow than in the lymph nodes. Comparative clonality testing was helpful in only a minority of cases. Infiltrates of the most important differential diagnoses contained either PD-1- or BCL6-positive tumor-infiltrating cells, but no coexpressing cells. CONCLUSIONS.— Bone marrow infiltration by angioimmunoblastic T-cell lymphoma displays 3 different patterns that correlate with prognosis. BCL6 and PD-1 can be reliably used to identify lymphoma infiltrates and to help rule out several differential diagnoses. Comparative clonality testing rarely provides additional value and cannot replace morphologic and phenotypic analyses.
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Affiliation(s)
- Magdalena M Gerlach
- From the Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - Darius Juskevicius
- From the Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - Visar Vela
- From the Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - Stefan Dirnhofer
- From the Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
| | - Alexandar Tzankov
- From the Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland
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16
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Jevremovic D, Olteanu H. Flow Cytometry Applications in the Diagnosis of T/NK-Cell Lymphoproliferative Disorders. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019; 96:99-115. [PMID: 30729667 DOI: 10.1002/cyto.b.21768] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 02/02/2023]
Abstract
This article provides an overview of the role of flow cytometry in the diagnosis, prognosis, and follow-up of T and NK-cell lymphoproliferative disorders. For each category, we will briefly discuss the immunophenotypic features of normal T and NK cells, and address technical issues in flow cytometry, the approach to diagnosis in various contexts, pitfalls in interpretation, and its use in follow-up and post-therapy management. In addition to reviewing the diagnostic, prognostic, and therapeutic utility of flow cytometric immunophenotyping in several of specific T and NK cell entities, we will also cover some of the new immunophenotypic markers. Furthermore, we will touch upon incorporation of flow cytometry in the final diagnosis, including correlation with other ancillary tests. © 2019 International Clinical Cytometry Society.
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Affiliation(s)
- Dragan Jevremovic
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, Minnesota
| | - Horatiu Olteanu
- Division of Hematopathology, Department of Pathology and Laboratory Medicine, Mayo Clinic, Rochester, Minnesota
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17
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Atanackovic D, Luetkens T. Biomarkers for checkpoint inhibition in hematologic malignancies. Semin Cancer Biol 2018; 52:198-206. [PMID: 29775689 DOI: 10.1016/j.semcancer.2018.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/14/2018] [Accepted: 05/14/2018] [Indexed: 01/27/2023]
Abstract
In the past few years we have seen remarkable paradigm shifts in the treatment of many solid tumors due to the introduction of inhibitors targeting immune checkpoints such as PD-1/PD-L1 and CTLA-4. Recent results indicate that checkpoint inhibition also represents a very promising approach for certain types of hematologic malignancies. Unfortunately, treatment with checkpoint inhibitors is also associated with substantial toxicities and high costs and only a subset of patients appears to derive clinical benefit from these treatments. This demonstrates the urgent need for biomarkers for the identification of patient populations that are likely to respond to this type of therapy and/or have fewer side effects. Here, we have reviewed available information on the prognostic and predictive value of biomarkers for anti-CTLA-4 and anti-PD-1/PD-L1 as the most commonly used checkpoint inhibitors. There are currently no reliable biomarkers capable of predicting responses to anti-CTLA-4 agents, such as ipilimumab, in hematologic malignancies. Certain polymorphisms in the CTLA-4 gene, however, seem to have an impact on the patients' outcome, especially in the case of chronic lymphocytic leukemia (CLL). There is now sufficient data supporting PD-L1 expression levels in the tumor tissue as an independent prognostic factor in B cell lymphomas such as diffuse large B-cell lymphoma (DLBCL). Overexpression of PD-L1 in the tumor tissue and elevated serum levels of soluble PD-L1 may also represent adverse prognostic factors in certain subtypes of T cell lymphomas. Finally, expression levels of PD-L1 also seem to predict responses to anti-PD-1/PD-L1 approaches in patients with Hodgkin lymphoma. Future studies will have to further delineate the prognostic/predictive role of PD-L1 expression as a biomarker in hematologic malignancies and may be able to identify confounding variables, which will hopefully to some extent be generalizable to other types of anti-tumor immunotherapies.
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Affiliation(s)
- Djordje Atanackovic
- Multiple Myeloma Program & Cancer Immunology, Division of Hematology and Hematologic Malignancies, University of Utah/Huntsman Cancer Institute, Salt Lake City, UT, United States.
| | - Tim Luetkens
- Multiple Myeloma Program & Cancer Immunology, Division of Hematology and Hematologic Malignancies, University of Utah/Huntsman Cancer Institute, Salt Lake City, UT, United States
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Abstract
Cutaneous T-cell lymphomas comprise a heterogeneous group of diseases characterized by monoclonal proliferations of T lymphocytes primarily involving skin, modified skin appendages, and some mucosal sites. This article addresses the basic clinical, histologic, and immunohistochemical characteristics of this group of diseases, with additional attention to evolving literature on dermoscopy, reflectance confocal microscopy, flow cytometry, and molecular data that may increasingly be applied to diagnostic and therapeutic algorithms in these diseases. Select unusual phenotypes or diagnostic examples of classic phenotypes are demonstrated, and flags for consideration while making a pathologic diagnosis of cutaneous T-cell lymphoma are suggested.
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Affiliation(s)
- Melissa Pulitzer
- Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
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19
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Upregulation of inhibitory signaling receptor programmed death marker-1 (PD-1) in disease evolution from cutaneous lymphoid dyscrasias to mycosis fungoides and Sezary's syndrome. Ann Diagn Pathol 2017. [DOI: 10.1016/j.anndiagpath.2017.02.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Development of T follicular helper cells and their role in disease and immune system. Biomed Pharmacother 2016; 84:1668-1678. [DOI: 10.1016/j.biopha.2016.10.083] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 10/26/2016] [Accepted: 10/26/2016] [Indexed: 02/06/2023] Open
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Abstract
Conventional presentations of mycosis fungoides may be diagnostically challenging, particularly in light of the controversial boundaries defining the disease. Variant presentations of this cutaneous T-cell lymphoma add a further layer of complexity, requiring a sophisticated and informed perspective when evaluating lymphoid infiltrates in the skin. Herein we discuss well-defined (WHO-EORTC) variants pagetoid reticulosis, granulomatous slack skin and folliculotropic mycosis fungoides as well as less well-defined morphologic/architectural variants, and divergent immunohistochemical presentations of this typically indolent T-cell lymphoproliferative disease.
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22
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Extranodal Marginal Zone Lymphoma-like Presentations of Angioimmunoblastic T-Cell Lymphoma: A T-Cell Lymphoma Masquerading as a B-Cell Lymphoproliferative Disorder. Am J Dermatopathol 2016; 37:604-13. [PMID: 25839892 DOI: 10.1097/dad.0000000000000266] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Angioimmunoblastic T-cell lymphoma (AITL) is the second most common type of peripheral T-cell lymphoma worldwide, and in some countries, it is the most common form. Clinically, AITL usually presents with systemic symptoms, diffuse lymphadenopathy, hepatosplenomegaly, and common laboratory abnormalities such as hypergammaglobulinemia. Rashes are seen in 50%-80% of patients. AITL derives from follicular T-helper cells (TFH), that express germinal center markers and produce hyperactivation of B-cells seen in AITL. Although the histological features of AITL in the skin could be similar to pathological findings present in lymph node biopsies, herein, we present 2 cases of AITL with histological and immunophenotypic features that were somewhat suggestive of extranodal marginal zone lymphoma. Caution is urged to exclude the possibility of a systemic T-cell lymphoma such as AITL in cutaneous and lymph node B-cell proliferations.
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Conjunctival Involvement of T-Cell Lymphoma in a Patient with Mycosis Fungoides. Case Rep Ophthalmol Med 2016; 2016:4786498. [PMID: 26989539 PMCID: PMC4775785 DOI: 10.1155/2016/4786498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2015] [Accepted: 01/27/2016] [Indexed: 11/24/2022] Open
Abstract
Background. Ocular involvement in mycosis fungoides (MF) cases occurs in one-third of patients with the eyelid being the most frequent site affected; however, conjunctival involvement is rarely reported. Herein, we report a rare case of conjunctival involvement of MF. Case Presentation. A 66-year-old man who was previously diagnosed with MF in 2010 and was treated presented in 2014 complaining of foreign body sensation and redness in both eyes. Slit lamp examination of both eyes showed erythematous conjunctival growth that extended circumferentially. Physical examination revealed erythematous skin lesions on different body parts. Conjunctival biopsy was performed and revealed a dense, highly polymorphic lymphocytic population. The immunophenotype demonstrated a neoplastic T-cell origin consistent with MF. A diagnosis of conjunctival involvement by MF was made. The conjunctiva was treated with radiotherapy resulting in tumor regression. There were no recurrences at the 6-month follow-up. Conclusion. T-cell lymphoma should be considered in patients with a history of MF presenting with conjunctival and skin lesions.
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LeBlanc RE, Lefterova MI, Suarez CJ, Tavallaee M, Kim YH, Schrijver I, Kim J, Gratzinger D. Lymph node involvement by mycosis fungoides and Sézary syndrome mimicking angioimmunoblastic T-cell lymphoma. Hum Pathol 2015; 46:1382-9. [PMID: 26193796 DOI: 10.1016/j.humpath.2015.05.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/28/2015] [Accepted: 05/29/2015] [Indexed: 10/23/2022]
Abstract
Clinical management of cutaneous T-cell lymphoma (CTCL) and angioimmunoblastic T-cell lymphoma (AITL) differs markedly. Diagnostic distinction is critical. Herein, we describe a series of 4 patients with clinically, molecularly, and histopathologically annotated mycosis fungoides or Sézary syndrome whose nodal disease mimicked AITL. The patients otherwise exhibited classic clinical manifestations of mycosis fungoides/Sézary syndrome preceding the onset of lymphadenopathy by 1 to 5 years. Skin biopsies revealed epidermotropic infiltrates characteristic of CTCL. Lymph node biopsies revealed dense CD4+ T-cell infiltrates that coexpressed follicular helper T-cell markers and were accompanied by proliferations of high endothelial venules and arborizing CD21+ follicular dendritic cell networks. Two patients had T-cell receptor gene rearrangement studies performed on their skin, lymph node, and peripheral blood demonstrating identical polymerase chain reaction clones in all 3 tissues. A small secondary clonal B-cell population was present in 1 patient that mimicked the B-cell proliferations known to accompany AITL and persisted on successive nodal biopsies over several years. This latter phenomenon has not previously been described in CTCL. The potential for patients to be misdiagnosed with AITL for lack of consideration of advanced-stage CTCL with nodal involvement underscores the necessity of information sharing among the various pathologists and clinicians involved in the care of each patient.
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Affiliation(s)
- Robert E LeBlanc
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305
| | - Martina I Lefterova
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305
| | - Carlos J Suarez
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305
| | - Mahkam Tavallaee
- Department of Dermatology, Stanford University School of Medicine, Stanford, CA 94305
| | - Youn H Kim
- Department of Dermatology, Stanford University School of Medicine, Stanford, CA 94305
| | - Iris Schrijver
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305
| | - Jinah Kim
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305
| | - Dita Gratzinger
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305.
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25
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Dewar R, Andea AA, Guitart J, Arber DA, Weiss LM. Best practices in diagnostic immunohistochemistry: workup of cutaneous lymphoid lesions in the diagnosis of primary cutaneous lymphoma. Arch Pathol Lab Med 2015; 139:338-50. [PMID: 25724031 DOI: 10.5858/arpa.2014-0018-cp] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT Primary cutaneous lymphoma is a common extranodal non-Hodgkin lymphoma. These lesions share common features with their nodal counterparts, but also have differences in morphology, unique clinical presentations, and immunohistochemical features. OBJECTIVE To review the 2008 World Health Organization (WHO) and 2005 consensus WHO-EORTC (European Organisation for Research and Treatment of Cancer) classifications, and address the immunohistochemical findings in the most common primary cutaneous T- and B-cell lymphomas. Since clonality testing is commonly used as an ancillary test in the evaluation of cutaneous lymphoma, a brief section in the use and pitfalls of clonality testing is included. DATA SOURCES The WHO and EORTC classification publications and the relevant recent literature were used to compile appropriate and practical guidelines in this review. CONCLUSIONS The practice of dermatopathology and hematopathology varies widely. Thus, while this review provides an overview and guideline for the workup of lymphoid lesions of the skin, the practitioner should understand the importance of clinical correlation as well as appropriate utility of available resources (such as clonality testing) in arriving at a diagnosis in cutaneous lymphoid lesions.
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Affiliation(s)
- Rajan Dewar
- From the Department of Pathology, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, Massachusetts (Dr Dewar); the Department of Pathology, University of Michigan, Ann Arbor (Dr Andea); the Department of Pathology and Dermatology, Northwestern University, Chicago, Illinois (Dr Guitart); the Department of Pathology, Stanford University Medical Center, Stanford, California (Dr Arber); and the Department of Hematopathology, Clarient Pathology Services, Inc, Aliso Viejo, California (Dr Weiss)
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Pathophysiology of T follicular helper cells in humans and mice. Nat Immunol 2015; 16:142-52. [PMID: 25594465 DOI: 10.1038/ni.3054] [Citation(s) in RCA: 321] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 11/12/2014] [Indexed: 02/08/2023]
Abstract
Follicular helper T cells (TFH cells) compose a heterogeneous subset of CD4(+) T cells that induce the differentiation of B cells into plasma cells and memory cells. They are found within and in proximity to germinal centers in secondary lymphoid organs, and their memory compartment also circulates in the blood. Our knowledge on the biology of TFH cells has increased significantly during the past decade, largely as a result of mouse studies. However, recent studies on human TFH cells isolated from lymphoid organ and blood samples and recent observations on the developmental mechanism of human TFH cells have revealed both similarities and differences between human and mouse TFH cells. Here we present the similarities and differences between mouse and human lymphoid organ-resident TFH cells and discuss the role of TFH cells in response to vaccines and in disease pathogenesis.
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Expression of T-Follicular Helper Markers in Sequential Biopsies of Progressive Mycosis Fungoides and Other Primary Cutaneous T-Cell Lymphomas. Am J Dermatopathol 2015; 37:115-21. [DOI: 10.1097/dad.0000000000000258] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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28
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Expression of follicular helper T-cell markers in primary cutaneous T-cell lymphoma. Am J Dermatopathol 2015; 36:465-70. [PMID: 24162385 DOI: 10.1097/dad.0b013e3182a72f8c] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The follicular helper T cells (TFH) seemed to be expressed in several subsets of T-cell lymphomas. However, their expression in cutaneous T-cell lymphomas (CTCLs) has been rarely described. We investigated the clinical features, histopathological morphology, and expression of TFH markers in CTCLs. Forty-nine patients (24 men and 25 women) diagnosed with CTCL were examined, 25 patients with mycosis fungoides (MF) and 24 with other CTCLs. Immunohistochemical staining for CD10, Bcl-6, inducible costimulator, CXCL13, and PD-1 were performed. Relation between PD-1 and clinical course in MF was evaluated. PD-1 was detected in 21 of 25 (84.0%) MF cases and in 11 of 24 (45.8%) other CTCL cases. Bcl-6, CXCL13, inducible costimulator, and CD10 were occasionally expressed in most T-cell lymphomas, including MF. The staining for PD-1 was negative in all the MF cases with large-cell transformation. No correlation was observed between disease course and PD-1 expression rate in the MF cases. In conclusion, among the TFH markers, PD-1 was most frequently expressed in CTCL. PD-1 was expressed in most MF. PD-1 expression rates were significantly higher in MF than in other CTCLs.
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Cogbill CH, Swerdlow SH, Gibson SE. Utility of CD279/PD-1 immunohistochemistry in the evaluation of benign and neoplastic T-cell-rich bone marrow infiltrates. Am J Clin Pathol 2014; 142:88-98. [PMID: 24926091 DOI: 10.1309/ajcpwf77vognovzu] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVES CD279 expression is used to help identify angioimmunoblastic T-cell lymphoma (AITL) or other T-cell lymphomas of T-follicular helper (TFH) cell origin; however, its utility in assessing lymphoid infiltrates in the bone marrow (BM) is not well established. METHODS Immunohistochemistry for CD279 was performed on normal staging BM and in BM with benign lymphoid aggregates (LAs), AITLs, and other T-cell lymphomas. RESULTS Seven of 10 staging BMs demonstrated scattered, usually weakly CD279+ cells. Thirty-four of 38 BMs had scattered weakly/variably intense CD279+ cells within LAs, but only four contained 11% to 25% CD279+ cells. Three of four AITLs were strongly CD279+, but one contained only around 10% CD279+ cells. Eleven of the other 38 T-cell lymphomas were CD279+, including five possible AITLs; four peripheral T-cell lymphomas, not otherwise specified; and two T-cell large granular lymphocytic leukemias. CONCLUSIONS Although useful in assessing selected BM lymphoid infiltrates, CD279 expression may be limited in AITLs, is not specific for TFH lymphomas, and can be seen in benign lymphoid infiltrates, although without extensive strong positivity.
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Affiliation(s)
| | - Steven H. Swerdlow
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Sarah E. Gibson
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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Takaki M, Inozume T, Matsuzawa T, Ando N, Yamaguchi M, Harada K, Kawamura T, Shibagaki N, Shimada S. Case of primary cutaneous peripheral T-cell lymphoma, not otherwise specified, with characteristics of follicular helper T cells. J Dermatol 2014; 41:529-32. [DOI: 10.1111/1346-8138.12493] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 03/13/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Machiko Takaki
- Department of Dermatology; University of Yamanashi; Chuo Japan
| | - Takashi Inozume
- Department of Dermatology; University of Yamanashi; Chuo Japan
| | | | - Noriko Ando
- Department of Dermatology; University of Yamanashi; Chuo Japan
| | | | - Kazutoshi Harada
- Department of Dermatology; Tokyo Medical University; Tokyo Japan
| | | | | | - Shinji Shimada
- Department of Dermatology; University of Yamanashi; Chuo Japan
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31
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Ingen-Housz-Oro S, Franck N, Beneton N, Fauconneau A, Do-Pham G, Carlotti A, Petit T, Liolios I, Bara C, Carpentier H, Storelli D, Prophette B, Garderet L, Haioun C, Petit E, Delfau-Larue MH, Vergier B, Chosidow O, Beylot-Barry M, Ortonne N. Folliculotropic T-cell infiltrates associated with B-cell chronic lymphocytic leukaemia or MALT lymphoma may reveal either true mycosis fungoides or pseudolymphomatous reaction: seven cases and review of the literature. J Eur Acad Dermatol Venereol 2014; 29:77-85. [DOI: 10.1111/jdv.12454] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
Affiliation(s)
| | - N. Franck
- Department of Dermatology; AP-HP; Cochin Hospital; Paris
| | - N. Beneton
- Department of Dermatology; Le Mans Hospital; Le Mans
| | - A. Fauconneau
- Department of Dermatology; CHU Bordeaux; Bordeaux
- EA2406; Histology and Molecular Pathology of Tumors; Univ. Bordeaux; Bordeaux
| | - G. Do-Pham
- Department of Dermatology; AP-HP; Henri Mondor Hospital; Créteil
| | - A. Carlotti
- Department of Pathology; AP-HP; Cochin Hospital; Paris
| | | | | | - C. Bara
- Department of Dermatology; Le Mans Hospital; Le Mans
| | | | | | - B. Prophette
- Department of Pathology; Le Mans Hospital; Le Mans
| | - L. Garderet
- Department of Hematology; AP-HP; Saint-Antoine Hospital; Paris
| | - C. Haioun
- Lymphoid Malignancies Unit; AP-HP; Henri Mondor Hospital; Créteil
- Université Paris-Est Créteil Val de Marne (UPEC); Créteil
| | - E. Petit
- Policlinique Saint-Jean; Cagnes-sur-Mer
| | - M.-H. Delfau-Larue
- Laboratory of Immunology; AP-HP; Henri Mondor Hospital; Créteil
- Université Paris-Est Créteil Val de Marne (UPEC); Créteil
| | - B. Vergier
- Department of Pathology; CHU Bordeaux; Bordeaux
- EA2406; Histology and Molecular Pathology of Tumors; Univ. Bordeaux; Bordeaux
| | - O. Chosidow
- Department of Dermatology; AP-HP; Henri Mondor Hospital; Créteil
- Université Paris-Est Créteil Val de Marne (UPEC); Créteil
- INSERM; Centre d'Investigation Clinique 006; APHP; Créteil France
| | - M. Beylot-Barry
- Department of Dermatology; CHU Bordeaux; Bordeaux
- EA2406; Histology and Molecular Pathology of Tumors; Univ. Bordeaux; Bordeaux
| | - N. Ortonne
- Université Paris-Est Créteil Val de Marne (UPEC); Créteil
- Department of Pathology; AP-HP; Henri Mondor Hospital; Créteil
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32
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Mitteldorf C, Bieri M, Wey N, Kerl K, Kamarachev J, Pfaltz M, Kutzner H, Roncador G, Tomasini D, Kempf W. Expression of programmed death-1 (CD279) in primary cutaneous B-cell lymphomas with correlation to lymphoma entities and biological behaviour. Br J Dermatol 2013; 169:1212-8. [DOI: 10.1111/bjd.12579] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2013] [Indexed: 12/12/2022]
Affiliation(s)
- C. Mitteldorf
- Department of Dermatology; Klinikum Hildesheim GmbH; Hildesheim Germany
| | - M. Bieri
- Department of Pathology; University Hospital Zürich; Zürich Switzerland
| | - N. Wey
- Department of Pathology; University Hospital Zürich; Zürich Switzerland
| | - K. Kerl
- Department of Dermatology; University Hospital Zürich; Zürich Switzerland
| | - J. Kamarachev
- Department of Dermatology; University Hospital Zürich; Zürich Switzerland
| | - M. Pfaltz
- Department of Psychiatry and Psychotherapy; University Hospital Zürich; Zürich Switzerland
- Kempf und Pfaltz; Histologische Diagnostik; Research Unit; Seminarstrasse 1 CH-8042 Zürich Switzerland
| | - H. Kutzner
- Dermatopathologie Friedrichshafen Bodensee; Friedrichshafen Germany
| | - G. Roncador
- Centro Nacional de Investigaciones Oncologicas; Madrid Spain
| | - D. Tomasini
- Department of Dermatology; Hospital of Busto Arsizio; Busto Arsizio Italy
| | - W. Kempf
- Department of Dermatology; University Hospital Zürich; Zürich Switzerland
- Kempf und Pfaltz; Histologische Diagnostik; Research Unit; Seminarstrasse 1 CH-8042 Zürich Switzerland
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33
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Human T follicular helper (Tfh) cells and disease. Immunol Cell Biol 2013; 92:64-71. [PMID: 24145858 DOI: 10.1038/icb.2013.55] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 09/04/2013] [Accepted: 09/05/2013] [Indexed: 12/14/2022]
Abstract
The generation of protective antibodies by B cells following natural infection or vaccination requires 'help' from CD4(+) T cells. T follicular helper (Tfh) cells are the specialized CD4(+) T cell subset that has evolved the appropriate mechanisms to induce the activation and differentiation of B cells into immunoglobulin (Ig) secreting cells. As such, appropriate control of Tfh cell generation and function is essential to human health as overactivation is likely to result in autoimmunity, whereas underactivation is often associated with immunodeficiency. Furthermore, an understanding of the regulation of these cells may be invaluable to improved vaccine development strategies. Traditionally Tfh cells have been identified by their anatomical location in secondary lymphoid tissues, which has hindered the study of these cells in humans as access to these tissues is often not feasible. However, recent studies have identified the circulating counterparts to tissue Tfh cells and with this has come a wealth of knowledge gained from the study of these cells in human disease. Here we review some of the recent developments on the role of human Tfh cells in health and disease.
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Attygalle AD, Cabeçadas J, Gaulard P, Jaffe ES, de Jong D, Ko YH, Said J, Klapper W. Peripheral T-cell and NK-cell lymphomas and their mimics; taking a step forward - report on the lymphoma workshop of the XVIth meeting of the European Association for Haematopathology and the Society for Hematopathology. Histopathology 2013; 64:171-99. [PMID: 24128129 DOI: 10.1111/his.12251] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Mature T-cell and T/NK-cell neoplasms are both uncommon and heterogeneous, among the broad category of non-Hodgkin lymphomas. Owing to the lack of specific genetic alterations in the vast majority, most currently defined entities show overlapping morphological and immunophenotypic features, and therefore pose a challenge to the diagnostic pathologist. In the light of recent immunophenotypic, cytogenetic and molecular genetics advances in the field of T-cell and T/NK-cell lymphomas, the focus of the lymphoma workshop of the European Association for Haematopathology/Society for Hematopathology meeting in Lisbon, Portugal, in October 2012 was to refine existing diagnostic criteria and clarify the borders between overlapping entities. The panel reviewed over 200 submitted cases, which were grouped into five categories: (i) angioimmunoblastic T-cell lymphoma and T-follicular-helper-cell-associated lymphomas; (ii) CD30-positive T-cell lymphomas/lymphoproliferative diseases; (iii) extranodal T-cell and NK-cell neoplasms; (iv) EBV-associated T-cell/NK-cell lymphomas/lymphoproliferative diseases; and (v) peripheral T-cell lymphoma, not otherwise specified, post-transplant lymphoproliferative disorders, and mimics. This report summarizes the discussions and conclusions of the workshop, which question current diagnostic criteria and provide recommendations for refining existing classifications.
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35
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Buder K, Poppe LM, Bröcker EB, Goebeler M, Rosenwald A, Geissinger E, Kerstan A. Primary cutaneous follicular helper T-cell lymphoma: diagnostic pitfalls of this new lymphoma subtype. J Cutan Pathol 2013; 40:903-8. [PMID: 23941646 DOI: 10.1111/cup.12204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 06/11/2013] [Accepted: 07/07/2013] [Indexed: 11/29/2022]
Abstract
The recently proposed entity of cutaneous follicular helper T (T(FH)) cell lymphoma (CT(FH)CL) harbors distinct clinical and histopathologic features. Here, diagnostic pitfalls are exemplified in a case report and by review of the literature. A 45-year-old patient developed rapidly growing nodules and plaques on upper arms and buttocks, which were initially misdiagnosed as primary cutaneous follicle center B-cell lymphoma (CFCL). Consequently, systemic therapy with rituximab failed and consecutive skin biopsies revealed CT(FH)CL (CD3+CD4+CD10+PD-1+bcl6+ICOS+CXCL13+). Interestingly, the prima vista PD-1-positive and CD10-positive tumor cells lost PD-1 expression in follow-up biopsies while retaining CD10, ICOS and CXCL13 expression. All biopsy specimens displayed an identical clonal T-cell population. Initially, nodules were controlled by local radiotherapy and oral psoralen combined with ultraviolet A (PUVA) therapy. However, disease recurred and progressed rapidly with disseminated nodules. Treatment with bexarotene, methotrexate and polychemotherapy failed to stop disease progression. Finally, modified total skin electron beam radiation resulted in complete remission. Disease stabilized on maintenance therapy with bexarotene in combination with ultraviolet A (UVA) therapy. The case highlights that because of concomitant B-cell stimulation, CT(FH)CL clinicopathologically is prone to be mistaken for CFCL. Importantly, CT(FH)CL might lose PD-1 while retaining CD10 expression in later stages, which may lead to confusion in distinguishing CT(FH)CL from CFCL.
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Affiliation(s)
- Kristina Buder
- Department of Dermatology, Venereology and Allergology, University Hospital Würzburg, Würzburg, Germany
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