1
|
Fei F, Brar N, Herring MB, Menke JR, Oak J, Fernandez-Pol S. Quantification of the median fluorescence intensity of CD3 and CD4 in mycosis fungoides/Sezary syndrome versus non-neoplastic control cases in peripheral blood. J Hematop 2024:10.1007/s12308-024-00599-2. [PMID: 39093388 DOI: 10.1007/s12308-024-00599-2] [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: 03/05/2024] [Accepted: 07/22/2024] [Indexed: 08/04/2024] Open
Abstract
Peripheral blood involvement by MF/SS has significant implications for prognosis and treatment. Flow cytometry is commonly used to assess MF/SS by analyzing the ratio of CD26- and/or CD7-CD4 + T cells and assessment of immunophenotypic abnormalities. However, distinguishing normal from abnormal cells is not always easy. In this study, we aimed to establish quantitative thresholds to better distinguish normal CD4 + T cells from neoplastic CD4 + T cells. A retrospective analysis of flow cytometry data was performed on 30 MF/SS patients with a detectable abnormal T cell population (positive), 63 patients with suspected or confirmed cutaneous involvement without a detectable abnormal T cell population (negative), and 60 healthy controls (control). CD3 and CD4 median fluorescence intensity (MFI) was normalized to internal control subsets. Among the positive cases, 50% had CD3 expression outside ± 2 SD from the mean of the negative and control group in the CD4 + CD26- subset. The corresponding specificity of this threshold was 94%. The ± 2 SD threshold showed a sensitivity of 57% and a specificity of 94% for the CD3 intensity among the CD7-negative subset. For CD4 intensity, the ± 2 SD threshold had a sensitivity of 33.3% and specificity of 95% for the CD26-negative subset and a sensitivity of 37% and specificity of 95% for the CD7-negative subset. In our study, although changes in CD3 and CD4 intensity greater than ± 2 SD were specific for MF/SS, more subtle differences in the intensity of CD3 and CD4 should not be used as the sole abnormality to make a diagnosis of circulating MF/SS.
Collapse
Affiliation(s)
- Fei Fei
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pathology, City of Hope Comprehensive Cancer Center, Duarte, CA, USA
| | - Nivaz Brar
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Melissa Beth Herring
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Joshua R Menke
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jean Oak
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | | |
Collapse
|
2
|
Xu X, Chen Y, Kong L, Li X, Chen D, Yang Z, Wang J. Potential biomarkers for immune monitoring after renal transplantation. Transpl Immunol 2024; 84:102046. [PMID: 38679337 DOI: 10.1016/j.trim.2024.102046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/04/2024] [Accepted: 04/14/2024] [Indexed: 05/01/2024]
Abstract
Renal transplantation represents the foremost efficacious approach for ameliorating end-stage renal disease. Despite the current state of advanced renal transplantation techniques and the established postoperative immunosuppression strategy, a subset of patients continues to experience immune rejection during both the early and late postoperative phases, ultimately leading to graft loss. Consequently, the identification of immunobiomarkers capable of predicting the onset of immune rejection becomes imperative in order to facilitate early intervention strategies and enhance long-term prognoses. Upon reviewing the pertinent literature, we identified several indicators that could potentially serve as immune biomarkers to varying extents. These include the T1/T2 ratio, Treg/Th17 ratio, IL-10/TNF-α ratio, IL-33, IL-34, IL-6, IL-4, other cytokines, and NOX2/4.
Collapse
Affiliation(s)
- Xiaoyu Xu
- Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Yi Chen
- Shandong Medical College, Jinan, China
| | | | - Xianduo Li
- Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Dongdong Chen
- Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Zhe Yang
- Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China.
| | - Jianning Wang
- Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China; Department of Urology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China.
| |
Collapse
|
3
|
Shi M, Morice WG. How I diagnose large granular lymphocytic leukemia. Am J Clin Pathol 2024:aqae064. [PMID: 38823032 DOI: 10.1093/ajcp/aqae064] [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: 02/08/2024] [Accepted: 04/29/2024] [Indexed: 06/03/2024] Open
Abstract
OBJECTIVES Large granular lymphocytic leukemia (LGLL) represents a rare neoplasm of mature T cells or natural killer (NK) cells, with an indolent clinical course. Diagnosing LGLL can be challenging because of overlapping features with reactive processes and other mimickers. METHODS By presenting 2 challenging cases, we elucidate the differentiation of LGLL from its mimics and highlight potential diagnostic pitfalls. A comprehensive review of the clinicopathologic features of LGLL was conducted. RESULTS Large granular lymphocytic leukemia displays a diverse spectrum of clinical presentations, morphologies, flow cytometric immunophenotypes, and molecular profiles. These features are also encountered in reactive conditions, T-cell clones of uncertain significance, and NK cell clones of uncertain significance. CONCLUSIONS In light of the intricate diagnostic landscape, LGLL workup must encompass clinical, morphologic, immunophenotypic, clonal, and molecular findings. Meeting major and minor diagnostic criteria is imperative for the accurate diagnosis of LGLL.
Collapse
Affiliation(s)
- Min Shi
- Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, US
| | | |
Collapse
|
4
|
Lu C, Li M, Fu J, Fan X, Zhong L, Li Y, Xi Q. cyTRBC1 evaluation rapidly identifies sCD3-negative peripheral T-cell lymphomas and reveals a novel type of sCD3-negative T-cell clone with uncertain significance. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024. [PMID: 38818861 DOI: 10.1002/cyto.b.22182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/19/2024] [Accepted: 05/13/2024] [Indexed: 06/01/2024]
Abstract
The flow cytometry-based evaluation of TRBC1 expression has been demonstrated as a rapid and specific method for detecting T-cell clones in sCD3-positive TCRαβ+ mature T-cell lymphoma. The aim of the study was to validate the utility of surface (s) TRBC1 and cytoplastic (cy) TRBC1 assessment in detecting clonality of sCD3-negative peripheral T-cell lymphomas (PTCLs), as well as exploring the existence and characteristics of sCD3-negative clonal T-cell populations with uncertain significance (T-CUS). Evaluation of sTRBC1 and cyTRBC1 were assessed on 61 samples from 37 patients with sCD3-negative PTCLs, including 26 angioimmunoblastic T-cell lymphoma (AITL) patients and 11 non-AITL patients. The sCD3-negative T-CUS were screened from 1602 patients without T-cell malignancy and 100 healthy individuals. Additionally, the clonality of cells was further detected through T-cell gene rearrangement analysis. We demonstrated the monotypic expression patterns of cyTRBC1 in all sCD3-negative PTCLs. Utilizing the cyTRBC1 evaluation assay, we identified a novel and rare subtype of sCD3-negative T-CUS for the first time among 13 out of 1602 (0.8%) patients without T-cell malignancy. The clonality of these cells was further confirmed through T-cell gene rearrangement analysis. This subset exhibited characteristics such as sCD3-cyCD3 + CD4 + CD45RO+, closely resembling AITL rather than non-AITL. Further analysis revealed that sCD3-negative T-CUS exhibited a smaller clone size in the lymph node and mass specimens compared to AITL patients. However, the clone size of sCD3-negative T-CUS was significantly lower than that of non-AITL patients in both specimen groups. In conclusion, we validated the diagnostic utility of cyTRBC1 in detecting sCD3-negative T-cell clonality, provided a comprehensive analysis of sCD3-negative T-CUS, and established a framework and provided valuable insights for distinguishing sCD3-negative T-CUS from sCD3-negative PTCLs based on their phenotypic properties and clone size.
Collapse
Affiliation(s)
- Cong Lu
- Department of Cardiology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Mingyong Li
- Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jun Fu
- Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaoming Fan
- Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Ling Zhong
- Sichuan Provincial Key Laboratory for Human Disease Gene Study and Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanxin Li
- Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Qian Xi
- Department of Laboratory Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| |
Collapse
|
5
|
Shmidt D, Mamonkin M. CAR T Cells in T Cell Acute Lymphoblastic Leukemia and Lymphoblastic Lymphoma. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2024:S2152-2650(24)00211-8. [PMID: 38955579 DOI: 10.1016/j.clml.2024.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 05/28/2024] [Indexed: 07/04/2024]
Abstract
Chimeric antigen receptor (CAR T) therapy produced excellent activity in patients with relapsed/refractory B-lineage malignancies. However, extending these therapies to T cell cancers requires overcoming unique challenges. In the recent years, multiple approaches have been developed in preclinical models and some were tested in clinical trials in patients with treatment-refractory T-cell malignanices with promising early results. Here, we review main hurdles impeding the success of CAR T therapy in T-cell acute lymphoblastic leukemia/lymphoma (T-ALL/LBL), discuss potential solutions, and summarize recent progress in both preclinical and clinical development of CAR T therapy for these diseases.
Collapse
Affiliation(s)
- Daniil Shmidt
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX
| | - Maksim Mamonkin
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX; Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX.
| |
Collapse
|
6
|
Ehinger M, Béné MC. Morphology and multiparameter flow cytometry combined for integrated lymphoma diagnosis on small volume samples: possibilities and limitations. Virchows Arch 2024:10.1007/s00428-024-03819-3. [PMID: 38805049 DOI: 10.1007/s00428-024-03819-3] [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: 01/10/2024] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/29/2024]
Abstract
The diagnosis of lymphoma relies mainly on clinical examination and laboratory explorations. Among the latter, morphological and immunohistochemical analysis of a tissue biopsy are the cornerstones for proper identification and classification of the disease. In lymphoma with blood and/or bone marrow involvement, multiparameter flow cytometry is useful. This technique can also be applied to fresh cells released from a biopsy sample. For full comprehension of lymphomas, surgical biopsies are best and indeed recommended by the hematopathological community. Currently, however, there is a global trend towards less invasive procedures, resulting in smaller samples such as core needle biopsies or fine needle aspirations which can make the diagnosis quite challenging. In this review, the possibilities and limitations to make an accurate lymphoma diagnosis on such small volume material are presented. After recalling the major steps of lymphoma diagnosis, the respective value of histology, cytology, and flow cytometry is discussed, including handling of small specimens. The benefits of an integrated approach are then evoked, followed by discussion about which attitude to adopt in different contexts. Perhaps contrary to the prevailing view among many pathologists, a full diagnosis on small volume material, combined with relevant ancillary techniques, is often possible and indeed supported by recent literature. A glimpse at future evolutions, notably the merit of artificial intelligence tools, is finally provided. All in all, this document aims at providing pathologists with an overview of diagnostic possibilities in lymphoma patients when confronted with small volume material such as core needle biopsies or fine needle aspirations.
Collapse
Affiliation(s)
- Mats Ehinger
- Division of Pathology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden.
- Department of Clinical Genetics, Pathology and Molecular Diagnostics, Office for Medical Services, Region Skåne, Lund, Sweden.
| | - Marie C Béné
- Faculty of Medicine, Nantes University, Nantes, France
| |
Collapse
|
7
|
Jin X, Jiang H, Jiang Y, Chen Z, Zhou W, Pan Q, Tian S. Analysis of flow cytometry data from ultrasound-guided lymph node biopsies with two types of needles. Int J Lab Hematol 2024. [PMID: 38712479 DOI: 10.1111/ijlh.14306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 04/22/2024] [Indexed: 05/08/2024]
Abstract
BACKGROUND In this study, we combined two techniques, ultrasound-guided needle biopsy and flow cytometry (FCM), to explore their value in patients with enlarged lymph nodes. METHODS We compared the results of 198 needle biopsies on FCM and pathology. Forty-two were done by (fine needle aspiration, FNA), and the remaining 156 with (core needle biopsy, CNB), in 36 of 156 patients, a FNA was performed in the same lymph node after completion of the CNB. Except for five types of pathological entities, the rest were differentiated only detected or undetected tumours as the outcome distinction. RESULTS Among the 198 needle biopsies, 13 were inadequate specimens, while the remaining 185 had pathological findings, including 47 benign and 138 neoplastic findings. Thirty-six patients underwent puncture with both FNA and CNB, both needles produced identical results by FCM, but more cells were obtained by FNA. Among the pathologically positive results, there were 23 missed diagnoses in FCM, in contrast, evidence of tumours was observed in the FCM images of 15 needle biopsies that reported benign or findings that were inconsistent with pathology, and the final diagnosis was consistent with the FCM in 10 cases. FCM detected haematolymphoid tumours with a sensitivity of 87.8% and a specificity of 91.9%. CONCLUSION The combination of FCM and ultrasound-guided lymph node needle biopsy can quickly provide guidance for clinical decision-making. We recommend that all lymph node needle biopsies be sent for FCM, the specimen can be obtained by the last puncture with FNA.
Collapse
Affiliation(s)
- Xin Jin
- Department of Clinical Laboratory, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Huifang Jiang
- Department of Hematology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yuxia Jiang
- Department of Hematology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Zhilu Chen
- Department of Hematology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Wenfei Zhou
- Department of Hematology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Qing Pan
- Department of Pathology, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Shuyuan Tian
- Department of Ultrasound, Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, China
| |
Collapse
|
8
|
Devitt KA, Kern W, Li W, Wang X, Wong AJ, Furtado FM, Oak JS, Illingworth A. TRBC1 in flow cytometry: Assay development, validation, and reporting considerations. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:192-202. [PMID: 38700195 DOI: 10.1002/cyto.b.22175] [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: 11/17/2023] [Revised: 03/01/2024] [Accepted: 04/11/2024] [Indexed: 05/05/2024]
Abstract
The assessment of T-cell clonality by flow cytometry has long been suboptimal, relying on aberrant marker expression and/or intensity. The introduction of TRBC1 shows much promise for improving the diagnosis of T-cell neoplasms in the clinical flow laboratory. Most laboratories considering this marker already have existing panels designed for T-cell workups and will be determining how best to incorporate TRBC1. We present this comprehensive summary of TRBC1 and supplemental case examples to familiarize the flow cytometry community with its potential for routine application, provide examples of how to incorporate it into T-cell panels, and signal caution in interpreting the results in certain diagnostic scenarios where appropriate.
Collapse
Affiliation(s)
- Katherine A Devitt
- Department of Pathology and Laboratory Medicine, University of Vermont Medical Center, Burlington, Vermont, USA
- Larner College of Medicine at the University of Vermont, Burlington, Vermont, USA
| | - Wolfgang Kern
- Department of Flow Cytometry, MLL Munich Leukemia Laboratory, Munich, Germany
| | - Weijie Li
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, University of Missouri-Kansas City School of Medicine, Kansas City, Missouri, USA
| | - Xuehai Wang
- Division of Hematopathology, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Allyson J Wong
- Pathology and Laboratory Medicine, Lahey Hospital and Medical Center, Burlington, Massachusetts, USA
| | - Felipe M Furtado
- Hematology Department, Sabin Diagnostico e Saude, Brasília, Brazil
- Oncohematology Department, Hospital da Criança de Brasília, Brasília, Brazil
| | - Jean S Oak
- Department of Pathology, Stanford University, Stanford, California, USA
| | - Andrea Illingworth
- Department of Flow Cytometry, Dahl-Chase Diagnostic Services/Versant Diagnostics, Bangor, Maine, USA
| |
Collapse
|
9
|
Dexter T, Taiwo T, Dearden C, Chan LY, Taussig D, El-Sharkawi D, Dunlop A, Iyengar S. Correlation of T-cell receptor constant beta-chain 1 by flow cytometry with molecular T-cell receptor clonality for the investigation of T-cell lymphoproliferation. Br J Haematol 2024; 204:1554-1556. [PMID: 38407416 DOI: 10.1111/bjh.19299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 02/27/2024]
Affiliation(s)
- Tania Dexter
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Tosin Taiwo
- The Centre for Molecular Pathology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Claire Dearden
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Li Yuan Chan
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - David Taussig
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Dima El-Sharkawi
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Alan Dunlop
- The Centre for Molecular Pathology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Sunil Iyengar
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| |
Collapse
|
10
|
Nocco SE, Ewalt MD, Moy AP, Lewis NE, Zhu M, Lezcano C, Busam K, Pulitzer M. TRBC1 immunohistochemistry distinguishes cutaneous T-cell lymphoma from inflammatory dermatitis: A retrospective analysis of 39 cases. J Am Acad Dermatol 2024; 90:839-841. [PMID: 38061444 PMCID: PMC10960695 DOI: 10.1016/j.jaad.2023.11.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 10/20/2023] [Accepted: 11/17/2023] [Indexed: 01/03/2024]
Affiliation(s)
- Sarah E Nocco
- Department of Dermatology, Weill Cornell Medicine, New York, New York
| | - Mark D Ewalt
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Andrea P Moy
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Natasha E Lewis
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Menglei Zhu
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Cecilia Lezcano
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Klaus Busam
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Melissa Pulitzer
- Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.
| |
Collapse
|
11
|
Horna P, Weybright MJ, Ferrari M, Jungherz D, Peng Y, Akbar Z, Tudor Ilca F, Otteson GE, Seheult JN, Ortmann J, Shi M, Maciocia PM, Herling M, Pule MA, Olteanu H. Dual T-cell constant β chain (TRBC)1 and TRBC2 staining for the identification of T-cell neoplasms by flow cytometry. Blood Cancer J 2024; 14:34. [PMID: 38424120 PMCID: PMC10904869 DOI: 10.1038/s41408-024-01002-0] [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: 12/01/2023] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 03/02/2024] Open
Abstract
The diagnosis of leukemic T-cell malignancies is often challenging, due to overlapping features with reactive T-cells and limitations of currently available T-cell clonality assays. Recently developed therapeutic antibodies specific for the mutually exclusive T-cell receptor constant β chain (TRBC)1 and TRBC2 isoforms provide a unique opportunity to assess for TRBC-restriction as a surrogate of clonality in the flow cytometric analysis of T-cell neoplasms. To demonstrate the diagnostic utility of this approach, we studied 164 clinical specimens with (60) or without (104) T-cell neoplasia, in addition to 39 blood samples from healthy donors. Dual TRBC1 and TRBC2 expression was studied within a comprehensive T-cell panel, in a fashion similar to the routine evaluation of kappa and lambda immunoglobulin light chains for the detection of clonal B-cells. Polytypic TRBC expression was demonstrated on total, CD4+ and CD8+ T-cells from all healthy donors; and by intracellular staining on benign T-cell precursors. All neoplastic T-cells were TRBC-restricted, except for 8 cases (13%) lacking TRBC expression. T-cell clones of uncertain significance were identified in 17 samples without T-cell malignancy (13%) and accounted for smaller subsets than neoplastic clones (median: 4.7 vs. 69% of lymphocytes, p < 0.0001). Single staining for TRBC1 produced spurious TRBC1-dim subsets in 24 clinical specimens (15%), all of which resolved with dual TRBC1/2 staining. Assessment of TRBC restriction by flow cytometry provides a rapid diagnostic method to detect clonal T-cells, and to accurately determine the targetable TRBC isoform expressed by T-cell malignancies.
Collapse
Affiliation(s)
- Pedro Horna
- Division of Hematopathology, Mayo Clinic, Rochester, MN, USA.
| | | | | | - Dennis Jungherz
- Department of Internal Medicine, University of Cologne, Cologne, Germany
| | - YaYi Peng
- Department of Internal Medicine, University of Cologne, Cologne, Germany
| | | | | | | | | | - Janosch Ortmann
- Centre de Recherches Mathematiques, Universite du Quebec a Montreal, Montreal, Canada
| | - Min Shi
- Division of Hematopathology, Mayo Clinic, Rochester, MN, USA
| | | | - Marco Herling
- Department of Internal Medicine, University of Cologne, Cologne, Germany
| | - Martin A Pule
- Autolus Ltd, London, UK
- Cancer Institute, University College London, London, UK
| | - Horatiu Olteanu
- Division of Hematopathology, Mayo Clinic, Rochester, MN, USA
| |
Collapse
|
12
|
Castillo F, Morales C, Spralja B, Díaz-Schmidt J, Iruretagoyena M, Ernst D. Integration of T-cell clonality screening using TRBC-1 in lymphoma suspect samples by flow cytometry. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:64-73. [PMID: 38010106 DOI: 10.1002/cyto.b.22147] [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: 05/25/2023] [Revised: 08/23/2023] [Accepted: 10/12/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND The diagnosis of T-cell non-Hodgkin lymphomas (NHL) is challenging. The development of a monoclonal antibody specific for T-cell receptor β constant region 1 (TRBC1) provides an alternative to discriminate clonal T cells. The aim of this study was to evaluate the diagnostic potential of an anti-TRBC1 mAb for the identification of T-NHL. METHODS We performed a cross-sectional diagnostic analytic study of samples tested for lymphoma. All samples sent for lymphoma screening were first evaluated using the standard Euroflow LST, to which a second additional custom-designed T-cell clonality assessment tube was added CD45/TRBC1/CD2/CD7/CD4/TCRγδ/CD3. Flow cytometry reports were compared with morphological and molecular tests. RESULTS Fifty-nine patient samples were evaluated. Within the T-cell population, cut-off percentages in the CD4+ cells were from 29.4 to 54.6% and from 23.9 to 52.1% in CD8+ cells. Cut-off ratios in CD4+ T cells were from 0.33 to 1.1, and in CD8+ cells between 0.22 and 1.0. Using predefined normal cut-off values, 18 of 59 (30.5%) samples showed a restricted expression of TRBC1. A final diagnosis of a T-NHL was confirmed clinically and/or by histopathological studies in 15 of the 18 cases (83.3%). There were no cases of T-NHL by morphology/IHC with normal TRBC1 expression. Non-neoplastic patient samples behaved between predefined TRBC1 cut-off values. CONCLUSIONS Expression of TRBC1 provides a robust method for T-cell clonality assessment, with very high sensitivity and good correlation with complementary methods. TRBC1 can be integrated into routine lymphoma screening strategies via flow cytometry.
Collapse
Affiliation(s)
- Felipe Castillo
- Laboratorio Clínico, Clínica Alemana de Santiago, Vitacura, Chile
| | | | - Biserka Spralja
- Laboratorio Anatomía Patológica, Clínica Alemana de Santiago, Vitacura, Chile
- Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Joaquín Díaz-Schmidt
- Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
- Departamento de Oncología, Clínica Alemana de Santiago, Vitacura, Chile
| | - Mirentxu Iruretagoyena
- Laboratorio Clínico, Clínica Alemana de Santiago, Vitacura, Chile
- Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Daniel Ernst
- Laboratorio Clínico, Clínica Alemana de Santiago, Vitacura, Chile
- Facultad de Medicina Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
- Departamento de Oncología, Clínica Alemana de Santiago, Vitacura, Chile
- Instituto de Ciencia e Innovación en Medicina (ICIM), Universidad del Desarrollo, Santiago, Chile
| |
Collapse
|
13
|
Zhang Q, Yin L, Lai Q, Zhao Y, Peng H. Advances in the pathogenesis and therapeutic strategies of angioimmunoblastic T-cell lymphoma. Clin Exp Med 2023; 23:4219-4235. [PMID: 37759042 DOI: 10.1007/s10238-023-01197-9] [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: 07/08/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023]
Abstract
Angioimmunoblastic T-cell lymphoma (AITL) is an aggressive subtype of peripheral T-cell lymphomas with its cell origin determined to be follicular helper T-cells. AITL is characterized by a prominent tumor microenvironment involving dysregulation of immune cells, signaling pathways, and extracellular matrix. Significant progress has been made in the molecular pathophysiology of AITL, including genetic mutations, immune metabolism, hematopoietic-derived microenvironment, and non-hematopoietic microenvironment cells. Early diagnosis, detection of severe complications, and timely effective treatment are crucial for managing AITL. Treatment typically involves various combination chemotherapies, but the prognosis is often poor, and relapsed and refractory AITL remains challenging, necessitating improved treatment strategies. Therefore, this article provides an overview of the pathogenesis and latest advances in the treatment of AITL, with a focus on potential therapeutic targets, novel treatment strategies, and emerging immunotherapeutic approaches.
Collapse
Affiliation(s)
- Qingyang Zhang
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Le Yin
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Qinqiao Lai
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Yan Zhao
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Hongling Peng
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China.
- Hunan Key Laboratory of Tumor Models and Individualized Medicine, Changsha, 410011, Hunan, China.
- Hunan Engineering Research Center of Cell Immunotherapy for Hematopoietic Malignancies, Changsha, 410011, Hunan, China.
| |
Collapse
|
14
|
Singh AP, Courville EL. Advances in Monitoring and Prognostication for Lymphoma by Flow Cytometry. Clin Lab Med 2023; 43:351-361. [PMID: 37481316 DOI: 10.1016/j.cll.2023.04.010] [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] [Indexed: 07/24/2023]
Abstract
Flow cytometry (FC) is a well-established method important in the diagnosis and subclassification of lymphoma. In this article, the role of FC in lymphoma prognostication will be explored, and the clinical role for FC minimal/measurable residual disease testing as a monitoring tool for mature lymphoma will be introduced. Potential pitfalls of monitoring for residual/recurrent disease following immunotherapy will be presented.
Collapse
Affiliation(s)
- Amrit P Singh
- Department of Pathology, University of Virginia Health, PO Box 800214, Charlottesville, VA 22908, USA
| | - Elizabeth L Courville
- Department of Pathology, University of Virginia Health, PO Box 800214, Charlottesville, VA 22908, USA.
| |
Collapse
|
15
|
Seheult JN, Otteson GE, Jevremovic D, Horna P, Timm MM, Yuan J, Morice WG, Olteanu H, Shi M. Establishing NK-Cell Receptor Restriction by Flow Cytometry and Detecting Potential NK-Cell Clones of Uncertain Significance. Mod Pathol 2023; 36:100255. [PMID: 37385341 DOI: 10.1016/j.modpat.2023.100255] [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: 03/29/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 07/01/2023]
Abstract
Natural killer (NK) cells develop a complex inhibitory and/or activating NK-cell receptor system, including killer cell immunoglobulin-like receptors (KIRs or CD158) and CD94/NKG2 dimers, which are variably combined to generate the individual's NK-cell receptor repertoire. Establishing NK-cell receptor restriction by flow cytometric immunophenotyping is an important step in diagnosing NK-cell neoplasms, but reference interval (RI) data for interpreting these studies are lacking. Specimens from 145 donors and 63 patients with NK-cell neoplasms were used to identify discriminatory rules based on 95% and 99% nonparametric RIs for CD158a+, CD158b+, CD158e+, KIR-negative, and NKG2A+ NK-cell populations to establish NK-cell receptor restriction. These 99% upper RI limits (NKG2a >88% or CD158a >53% or CD158b >72% or CD158e >54% or KIR-negative >72%) provided optimal discrimination between NK-cell neoplasm cases and healthy donor controls with an accuracy of 100% compared with the clinicopathologic diagnosis. The selected rules were applied to 62 consecutive samples received in our flow cytometry laboratory that were reflexed to an NK-cell panel due to an expanded NK-cell percentage (exceeding 40% of total lymphocytes). Twenty-two (35%) of 62 samples were found to harbor a very small NK-cell population with restricted NK-cell receptor expression based on the rule combination, suggestive of NK-cell clonality. A thorough clinicopathologic evaluation for the 62 patients did not reveal diagnostic features of NK-cell neoplasms; therefore, these potential clonal populations of NK cells were designated as NK-cell clones of uncertain significance (NK-CUS). In this study, we established decision rules for NK-cell receptor restriction from the largest published cohorts of healthy donors and NK-cell neoplasms. The presence of small NK-cell populations with restricted NK-cell receptors does not appear to be an uncommon finding, and its significance requires further exploration.
Collapse
Affiliation(s)
- Jansen N Seheult
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Gregory E Otteson
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Dragan Jevremovic
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Pedro Horna
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Michael M Timm
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Ji Yuan
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - William G Morice
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Horatiu Olteanu
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Min Shi
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota.
| |
Collapse
|
16
|
Song P, Wusiman D, Li W, Guo L, Ying J, Gao S, He J. Validating a Macrophage Marker Gene Signature (MMGS) in Lung Adenocarcinoma Prognosis and Response to Immunotherapy. J Immunother 2023; 46:205-215. [PMID: 37220007 DOI: 10.1097/cji.0000000000000477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 04/27/2023] [Indexed: 05/25/2023]
Abstract
Lung adenocarcinoma (LUAD) is the leading cause of cancer-related death worldwide. Tumor-associated macrophages play pivotal roles in the tumor microenvironment (TME) and prognosis of LUAD. We first used single-cell RNA sequencing data to identify macrophage marker genes in LUAD. Univariate, least absolute shrinkage and selection operator and stepwise multivariate Cox regression analyses were conducted to evaluate macrophage marker genes as prognostic factors and to construct the macrophage marker genes signature (MMGS). A novel 8-gene signature was constructed to predict prognosis based on 465 macrophage marker genes identified by an analysis of single-cell RNA sequencing data of LUAD, and was also verified in 4 independent GEO cohorts. The MMGS significantly classified patients into high-risk and low-risk groups in terms of OS. A prognostic nomogram based on independent risk factors was established to predict the 2-, 3- and 5-year survival, which indicated superior accuracy in predicting prognosis. The high-risk group was correlated to higher tumor mutational burden, number of neoantigens, T-cell receptor richness, and lower TIDE, which suggested that high-risk patients were more likely to benefit from immunotherapy. The prediction of the possibility of immunotherapy efficacy was also discussed. Analysis of an immunotherapy cohort further verified that patients with high-risk scores had better immunotherapy responses than low-risk patients. The MMGS is a promising signature for predicting prognosis and effectiveness of immunotherapy in patients with LUAD, and may be helpful for clinical decision-making.
Collapse
Affiliation(s)
- Peng Song
- Department of Thoracic Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Dilinaer Wusiman
- Department of Head and Neck Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenbin Li
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei Guo
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jianming Ying
- Department of Pathology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shugeng Gao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
17
|
Zhang J, Fernandez-Pol S. TRBC1 enables identification of an otherwise immunophenotypically silent case of angioimmunoblastic T-cell lymphoma. J Hematop 2023; 16:59-61. [PMID: 38175375 DOI: 10.1007/s12308-023-00533-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 02/13/2023] [Indexed: 02/24/2023] Open
Affiliation(s)
- Jingjing Zhang
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
| | | |
Collapse
|
18
|
Luo L, Zhou X, Zhou L, Liang Z, Yang J, Tu S, Li Y. Current state of CAR-T therapy for T-cell malignancies. Ther Adv Hematol 2022; 13:20406207221143025. [PMID: 36601636 PMCID: PMC9806442 DOI: 10.1177/20406207221143025] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 11/09/2022] [Indexed: 12/28/2022] Open
Abstract
Chimeric antigen receptor T-cell (CAR-T) therapy has been approved for relapsed/refractory B-cell lymphomas and greatly improves disease outcomes. The impressive success has inspired the application of this approach to other types of tumors. The relapsed/refractory T-cell malignancies are characteristic of high heterogeneity and poor prognoses. The efficacy of current treatments for this group of diseases is limited. CAR-T therapy is a promising solution to ameliorate the current therapeutic situation. One of the major challenges is that normal T-cells typically share mutual antigens with malignant cells, which causes fratricide and serious T-cell aplasia. Moreover, T-cells collected for CAR transduction could be contaminated by malignant T-cells. The selection of suitable target antigens is of vital importance to mitigate fratricide and T-cell aplasia. Using nanobody-derived or naturally selected CAR-T is the latest method to overcome fratricide. Allogeneic CAR-T products and CAR-NK-cells are expected to avoid tumor contamination. Herein, we review the advances in promising target antigens, the current results of CAR-T therapy clinical trials in T-cell malignancies, the obstacles of CAR-T therapy in T-cell malignancies, and the solutions to these issues.
Collapse
Affiliation(s)
| | | | - Lijuan Zhou
- Department of Hematology, Zhujiang Hospital,
Southern Medical University, Guangzhou, Guangdong, China
| | - Zhao Liang
- Department of Hematology, Zhujiang Hospital,
Southern Medical University, Guangzhou, Guangdong, China
| | - Jilong Yang
- Department of Hematology, Zhujiang Hospital,
Southern Medical University, Guangzhou, Guangdong, China
| | | | | |
Collapse
|
19
|
Wang C, Zhu L, Liu S, Yi S, Xiao M, Zhang Y, Mao X. PD-1 combined with TRBC1 and pan-T cell antibodies for robustly monitoring angioimmunoblastic T-cell lymphoma. Front Med (Lausanne) 2022; 9:962428. [PMID: 36160159 PMCID: PMC9492947 DOI: 10.3389/fmed.2022.962428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe diagnosis of AITL is challenging. It may be delayed or even missed due to critical clinical conditions and its histologic and immunophenotypic overlap with other neoplastic and reactive lymphoid proliferations.ObjectiveThe key objective is to obtain an efficient diagnosis, sensitive disease monitoring and treatment efficacy assessment of AITL using multiparameter flow cytometry (MFC).MethodsIn total, 167 de novo AITL patients were immunophenotypically profiled using sensitive MFC. We precisely identified the aberrant T-cell populations of AITL and performed an in-depth description of their phenotypic characteristics in comparison with their residual normal CD4+ T cells. A comparison of Programmed death receptor-1 (PD-1) expression was performed among AITL and other T-cell lymphomas.ResultsMFC detected a neoplastic T-cell population in 94.1% (80/85) of tissue, 71.5% (108/151) of bone marrow (BM), 100% (8/8) of peripheral blood (PB) and 78.6% (11/14) of body fluid samples. The most frequent immunophenotypic aberrations included the absence and diminished expression of CD3 (71.25% in tissues, 71.3% in BM, 75% in PB, 81.8% in hydrothorax and ascites specimens), followed by the loss or partial loss of CD7 (71.25% in LN, 67.6% in BM, 50% in PB, 81.8% in hydrothorax and ascites specimens). The immunophenotyping of neoplastic T-cell populations showed a high degree of similarity among different sites of the same patient and they might change over time but were relatively stable. Bright PD-1 expression showed high sensitivity and specificity in differentiating AITL from other T-cell lymphomas. In 14 AITL patients, neoplastic T-cell populations were initially missed by T-cell screening tube but were successfully discovered by bright PD-1 expression.ConclusionT-cell screening tube can reliably screen neoplastic T-cell populations in AITL patients with typical immunophenotyping, such as loss of surface CD3 and loss of CD7 with a relatively high ratio. Bright PD-1 expression is essential for identifying aberrant T cells in almost all AITLs. The clonality assessment antibody TRBC1 is efficient for robustly and cheaply assessing T-cell clonality. Using PD-1 and TRBC1 combined with pan-T cell antibodies can make a precise diagnosis of AITL and also sensitively monitor minimal residual disease regardless of the antigenic drift of the neoplastic T cells.
Collapse
|
20
|
[The expressional characteristics and diagnostic values of TRBC1 in mature T-cell lymphoma]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2022; 43:575-580. [PMID: 36709135 PMCID: PMC9395569 DOI: 10.3760/cma.j.issn.0253-2727.2022.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Objective: To investigate the expression characteristics of TRBC1 protein in mature T-cell lymphoma (TCL) , and compare with T-cell receptor (TCR) -Vβ repertoire analysis and TCR gene rearrangement results, to explore the value of TRBC1 in the diagnosis of TCL. Methods: The expression of TRBC1 was detected by multi-parameter flow cytometry in 30 cases of TCL, 40 cases of normal controls and 50 cases of patients without T lymphocyte proliferative diseases (non-TCL) admitted to the Department of Hematology, The First Affiliated Hospital of Nanjing Medical University. The diagnostic value of TCRVβ repertoire analysis, TCR gene rearrangement and TRBC1 restricted expression detection in TCL was evaluated. Results: The positive rates of CD4(+)T and CD8(+)T cell subsets TRBC1 in normal control group were (39.6±6.5) % and (39.3±4.4) %. The positive rates of CD4(+)T and CD8(+)T cell subsets TRBC1 in non-TCL were (39.1±3.8) % and (36.0±8.4) %. All 30 cases of TCL were CD3(+)TCRγδ(-), and the positive rate of TRBC1 was >92.3% or <12.7%. All cases showed restrictive expression pattern (monoclonal expression) , which was significantly different from those of the normal control and the non-TCL cases (P<0.001) . In terms of the diagnostic performance of T cell clonality, the sensitivity of TRBC1 was 100%, the positive detection rate of TCR gene rearrangement was 92.8%, and the sensitivity of TCRVβ detection was 94.1%. Kappa test showed high consistency among the three detective methods. Conclusion: Multi-parameter flow cytometry detection of TRBC1 expression level can quickly and efficiently diagnose mature T-cell lymphoma, which has good clinical application value.
Collapse
|
21
|
Martin-Moro F, Martin-Rubio I, Garcia-Vela JA. TRBC1 expression assessed by flow cytometry as a novel marker of clonality in cutaneous αβ T-cell lymphomas with peripheral blood involvement. Br J Dermatol 2022; 187:623-625. [PMID: 35606929 DOI: 10.1111/bjd.21678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/18/2022] [Accepted: 05/21/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Fernando Martin-Moro
- Hematology Department, Ramon y Cajal University Hospital, Madrid, Spain.,University of Alcala, Alcala de Henares, Madrid, Spain
| | - Isaac Martin-Rubio
- Hematology Department, Getafe University Hospital, Getafe, Madrid, Spain
| | - Jose A Garcia-Vela
- Hematology Department, Getafe University Hospital, Getafe, Madrid, Spain
| |
Collapse
|
22
|
OUP accepted manuscript. Lab Med 2022; 53:417-425. [DOI: 10.1093/labmed/lmac014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
23
|
Mohammed Saleh MF, Kotb A, Abdallah GEM, Muhsen IN, El Fakih R, Aljurf M. Recent Advances in Diagnosis and Therapy of Angioimmunoblastic T Cell Lymphoma. Curr Oncol 2021; 28:5480-5498. [PMID: 34940095 PMCID: PMC8699908 DOI: 10.3390/curroncol28060456] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/09/2021] [Accepted: 12/17/2021] [Indexed: 12/28/2022] Open
Abstract
Angioimmunoblastic T cell lymphoma (AITL) is a common subtype of mature peripheral T cell lymphoma (PTCL). As per the 2016 World Health Organization classification, AITL is now considered as a subtype of nodal T cell lymphoma with follicular helper T cells. The diagnosis is challenging and requires a constellation of clinical, laboratory and histopathological findings. Significant progress in the molecular pathophysiology of AITL has been achieved in the past two decades. Characteristic genomic features have been recognized that could provide a potential platform for better diagnosis and future prognostic models. Frontline therapy for AITL was mainly depending on chemotherapy and the management of relapsed or refractory AITL is still unsatisfactory with a very poor prognosis. Upfront transplantation offers better survival. Novel agents have been introduced recently with promising outcomes. Several clinical trials of combinations using novel agents are underway. Herein, we briefly review recent advances in AITL diagnosis and the evolving treatment landscape.
Collapse
Affiliation(s)
- Mostafa F. Mohammed Saleh
- Adult Hematology, Transplantation and Cellular Therapy Section, Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; (A.K.); (R.E.F.); (M.A.)
- Clinical Hematology Unit, Department of Internal Medicine, Faculty of Medicine, Assiut University, Assiut 71515, Egypt;
| | - Ahmed Kotb
- Adult Hematology, Transplantation and Cellular Therapy Section, Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; (A.K.); (R.E.F.); (M.A.)
- Clinical Hematology Unit, Department of Internal Medicine, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Ghada E. M. Abdallah
- Clinical Hematology Unit, Department of Internal Medicine, Faculty of Medicine, Assiut University, Assiut 71515, Egypt;
| | - Ibrahim N. Muhsen
- Department of Medicine, Houston Methodist Hospital, Houston, TX 77030, USA;
| | - Riad El Fakih
- Adult Hematology, Transplantation and Cellular Therapy Section, Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; (A.K.); (R.E.F.); (M.A.)
| | - Mahmoud Aljurf
- Adult Hematology, Transplantation and Cellular Therapy Section, Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; (A.K.); (R.E.F.); (M.A.)
| |
Collapse
|
24
|
Litwin V. Issue Highlights-November 2021. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2021; 100:619-621. [PMID: 34787373 DOI: 10.1002/cyto.b.22037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
|
25
|
Muñoz-García N, Lima M, Villamor N, Morán-Plata FJ, Barrena S, Mateos S, Caldas C, Balanzategui A, Alcoceba M, Domínguez A, Gómez F, Langerak AW, van Dongen JJM, Orfao A, Almeida J. Anti-TRBC1 Antibody-Based Flow Cytometric Detection of T-Cell Clonality: Standardization of Sample Preparation and Diagnostic Implementation. Cancers (Basel) 2021; 13:cancers13174379. [PMID: 34503189 PMCID: PMC8430560 DOI: 10.3390/cancers13174379] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/17/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
A single antibody (anti-TRBC1; JOVI-1 antibody clone) against one of the two mutually exclusive T-cell receptor β-chain constant domains was identified as a potentially useful flow-cytometry (FCM) marker to assess Tαβ-cell clonality. We optimized the TRBC1-FCM approach for detecting clonal Tαβ-cells and validated the method in 211 normal, reactive and pathological samples. TRBC1 labeling significantly improved in the presence of CD3. Purified TRBC1+ and TRBC1- monoclonal and polyclonal Tαβ-cells rearranged TRBJ1 in 44/47 (94%) and TRBJ1+TRBJ2 in 48 of 48 (100%) populations, respectively, which confirmed the high specificity of this assay. Additionally, TRBC1+/TRBC1- ratios within different Tαβ-cell subsets are provided as reference for polyclonal cells, among which a bimodal pattern of TRBC1-expression profile was found for all TCRVβ families, whereas highly-variable TRBC1+/TRBC1- ratios were observed in more mature vs. naïve Tαβ-cell subsets (vs. total T-cells). In 112/117 (96%) samples containing clonal Tαβ-cells in which the approach was validated, monotypic expression of TRBC1 was confirmed. Dilutional experiments showed a level of detection for detecting clonal Tαβ-cells of ≤10-4 in seven out of eight pathological samples. These results support implementation of the optimized TRBC1-FCM approach as a fast, specific and accurate method for assessing T-cell clonality in diagnostic-FCM panels, and for minimal (residual) disease detection in mature Tαβ+ leukemia/lymphoma patients.
Collapse
Affiliation(s)
- Noemí Muñoz-García
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
| | - Margarida Lima
- Department of Hematology, Laboratory of Cytometry, Hospital de Santo António, Centro Hospitalar do Porto, 4099-001 Porto, Portugal;
- Unit for Multidisciplinary Research in Biomedicine (UMIB), Abel Salazar Institute of Biomedical Sciences (ICBAS), University of Porto, 4050-313 Porto, Portugal
| | - Neus Villamor
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
- Department of Pathology, Hematopathology Unit, Hospital Clínic, IDIBAPS, 08036 Barcelona, Spain
| | - F. Javier Morán-Plata
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
| | - Susana Barrena
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
| | - Sheila Mateos
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
| | - Carolina Caldas
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
| | - Ana Balanzategui
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
- Hematology Service, University Hospital of Salamanca, Translational and Clinical Research Program, Centro de Investigación del Cáncer/IBMCC and IBSAL, 37007 Salamanca, Spain
| | - Miguel Alcoceba
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
- Hematology Service, University Hospital of Salamanca, Translational and Clinical Research Program, Centro de Investigación del Cáncer/IBMCC and IBSAL, 37007 Salamanca, Spain
| | - Alejandro Domínguez
- Centro de Salud Miguel Armijo, Sanidad de Castilla y León (SACYL), 37007 Salamanca, Spain; (A.D.); (F.G.)
| | - Fabio Gómez
- Centro de Salud Miguel Armijo, Sanidad de Castilla y León (SACYL), 37007 Salamanca, Spain; (A.D.); (F.G.)
| | - Anton W. Langerak
- Department of Immunology, Laboratory Medical immunology, Erasmus MC, University Medical Center Rotterdam, 3015 GD Rotterdam, The Netherlands;
| | - Jacques J. M. van Dongen
- Department of Immunology, Leiden University Medical Center (LUMC), 2333 ZA Leiden, The Netherlands;
| | - Alberto Orfao
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
| | - Julia Almeida
- Translational and Clinical Research Program, Centro de Investigación del Cáncer and IBMCC (CSIC-University of Salamanca), Cytometry Service, NUCLEUS, Department of Medicine, University of Salamanca (USAL) and Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain; (N.M.-G.); (F.J.M.-P.); (S.B.); (S.M.); (C.C.); (A.O.)
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, 28029 Madrid, Spain; (N.V.); (A.B.); (M.A.)
- Correspondence:
| |
Collapse
|
26
|
DiGiuseppe JA. Issue Highlights-July 2021. CYTOMETRY PART B-CLINICAL CYTOMETRY 2021; 100:393-396. [PMID: 34292659 DOI: 10.1002/cyto.b.22027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
27
|
Horna P, Shi M, Olteanu H, Johansson U. Emerging Role of T-cell Receptor Constant β Chain-1 (TRBC1) Expression in the Flow Cytometric Diagnosis of T-cell Malignancies. Int J Mol Sci 2021; 22:ijms22041817. [PMID: 33673033 PMCID: PMC7918842 DOI: 10.3390/ijms22041817] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/09/2021] [Accepted: 02/09/2021] [Indexed: 02/07/2023] Open
Abstract
T-cell clonality testing is integral to the diagnostic work-up of T-cell malignancies; however, current methods lack specificity and sensitivity, which can make the diagnostic process difficult. The recent discovery of a monoclonal antibody (mAb) specific for human TRBC1 will greatly improve the outlook for T-cell malignancy diagnostics. The anti-TRBC1 mAb can be used in flow cytometry immunophenotyping assays to provide a low-cost, robust, and highly specific test that detects clonality of immunophenotypically distinct T-cell populations. Recent studies demonstrate the clinical utility of this approach in several contexts; use of this antibody in appropriately designed flow cytometry panels improves detection of circulating disease in patients with cutaneous T-cell lymphoma, eliminates the need for molecular clonality testing in the context of large granular lymphocyte leukemia, and provides more conclusive results in the context of many other T-cell disorders. It is worth noting that the increased ability to detect discrete clonal T-cell populations means that identification of T-cell clones of uncertain clinical significance (T-CUS) will become more common. This review discusses this new antibody and describes how it defines clonal T-cells. We present and discuss assay design and summarize findings to date about the use of flow cytometry TRBC1 analysis in the field of diagnostics, including lymph node and fluid sample investigations. We also make suggestions about how to apply the assay results in clinical work-ups, including how to interpret and report findings of T-CUS. Finally, we highlight areas that we think will benefit from further research.
Collapse
Affiliation(s)
- Pedro Horna
- Division of Hematopathology, Mayo Clinic, Rochester, MN 55905, USA; (P.H.); (M.S.); (H.O.)
| | - Min Shi
- Division of Hematopathology, Mayo Clinic, Rochester, MN 55905, USA; (P.H.); (M.S.); (H.O.)
| | - Horatiu Olteanu
- Division of Hematopathology, Mayo Clinic, Rochester, MN 55905, USA; (P.H.); (M.S.); (H.O.)
| | - Ulrika Johansson
- SI-HMDS, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol BS1 3NU, UK
- Correspondence:
| |
Collapse
|
28
|
Sorigue M, Hernandez-Gallego A, Centeno C, Raya M, Vergara S, Junca J, Tapia G. Contribution of anti-T cell receptor beta constant 1 to the classification of a mediastinal mass. CYTOMETRY PART B-CLINICAL CYTOMETRY 2020; 100:689-691. [PMID: 33252837 DOI: 10.1002/cyto.b.21973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 11/14/2020] [Indexed: 11/05/2022]
Affiliation(s)
- Marc Sorigue
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol. Functional Cytomics-IJC, Universitat Autònoma de Barcelona, Badalona, Spain
| | | | - Carmen Centeno
- Department of Pneumology, Hospital Germans Trias i Pujol, Badalona, Spain
| | - Minerva Raya
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol. Functional Cytomics-IJC, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Sara Vergara
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol. Functional Cytomics-IJC, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Jordi Junca
- Hematology Laboratory, ICO-Hospital Germans Trias i Pujol. Functional Cytomics-IJC, Universitat Autònoma de Barcelona, Badalona, Spain
| | - Gustavo Tapia
- Department of Pathology, Hospital Germans Trias i Pujol, Badalona, Spain
| |
Collapse
|
29
|
Utility of TRBC1 Expression in the Diagnosis of Peripheral Blood Involvement by Cutaneous T-Cell Lymphoma. J Invest Dermatol 2020; 141:821-829.e2. [PMID: 33049270 DOI: 10.1016/j.jid.2020.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/24/2020] [Accepted: 09/23/2020] [Indexed: 12/23/2022]
Abstract
Peripheral blood involvement by cutaneous T-cell lymphoma is typically assessed by flow cytometry and plays a critical role in diagnosis, classification, and prognosis. Simplified strategies to detect tumor cells (Sezary cells) fail to exclude reactive subsets, whereas tumor-specific abnormalities are subtle and inconsistently present. We implemented a flow cytometric strategy to detect clonal Sezary cells based on the monotypic expression of one of two mutually exclusive TCR constant β chains, TRBC1 and TRBC2. Analysis of CD4+ T-cell subsets and TCR variable β classes from healthy donors showed polytypic TRBC1 staining. Clonal Sezary cells were identified by TRBC1 staining in 56 of 111 (50%) samples from patients with cutaneous T-cell lymphoma, accounting for 7-18,155 cells/μl and including 13 cases (23%) lacking tumor-specific immunophenotypic abnormalities. CD4+ T-cell subsets from 86 patients without T-cell lymphoma showed polytypic TRBC1 staining, except for five patients (6%) with minute T-cell clones of uncertain significance accounting for 53-136 cells/μl. Assessment of TRBC1 expression within a comprehensive single-tube flow cytometry assay effectively overcomes interpretative uncertainties in the identification of Sezary cells without the need for a separate T-cell clonality assay.
Collapse
|
30
|
Vega F, Medeiros LJ. A suggested immunohistochemical algorithm for the classification of T-cell lymphomas involving lymph nodes. Hum Pathol 2020; 102:104-116. [PMID: 32479842 DOI: 10.1016/j.humpath.2020.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 12/16/2022]
Abstract
T-cell lymphomas are a heterogeneous group of neoplasms derived from mature T lymphocytes. These neoplasms are uncommon and usually diagnostically challenging. The focus of this article is to suggest an immunohistochemistry-based, practical approach to assist in the diagnosis of nodal T-cell lymphomas. These neoplasms fall into two major groups: those with many CD30+ tumor cells (group A) and neoplasms that are negative or show only partial expression of CD30 (group B). The differential diagnosis of group A neoplasms mainly includes ALK+ anaplastic large-cell lymphoma (ALCL), ALK-negative ALCL, mycosis fungoides with CD30+ large-cell transformation, adult T-cell leukemia/lymphoma, extranodal T-cell lymphomas involving lymph nodes (usually regional), and peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS). Group B neoplasms also include two groups based on the presence or absence of T follicular helper (TFH) markers. Those neoplasms expressing at least 2 TFH markers include angioimmunoblastic T-cell lymphoma, nodal PTCL with a TFH phenotype, and follicular T-cell lymphoma. Neoplasms expressing ≤1 TFH marker can be further subdivided based on the expression of CD8 and cytotoxic markers and mainly include PTCL-NOS and a series of unusual subsets including primary Epstein-Barr virus-positive nodal natural killer/T-cell lymphoma, PTCL-NOS with a cytotoxic immunophenotype, and γ/δ T-cell lymphomas. Using this algorithmic approach, we suggest that the pathologist can establish a diagnosis for most nodal T-cell lymphomas encountered in daily practice.
Collapse
Affiliation(s)
- Francisco Vega
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| |
Collapse
|