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Magnoli F, Marchiori D, Facchi S, Martin V, Campiotti L, Merli M, Sessa F, Tibiletti MG, Uccella S. High frequency of BCL2 gene rearrangement-negative follicular lymphoma in northwestern Italy. Cancer Genet 2023; 274-275:1-9. [PMID: 36917896 DOI: 10.1016/j.cancergen.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 02/10/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023]
Abstract
BCL2 rearrangement is reported to be an early pathogenetic event in follicular lymphoma (FL) and it is considered as a reliable marker in the follow up of the disease. We aimed to investigate the frequency of BCL2 rearrangement in FLs from northwestern Italy, to evaluate their clinicopathological features, and to investigate alternative genetic aberrations in BCL2-negative FLs. We collected a series of 76 consecutive FLs diagnosed between 2013 and 2016. All lymphomas underwent histopathological review. Interphasic fluorescent in situ hybridization (FISH) was performed with break apart probes targeting BCL2, IGH, BCL6 and MYC on paraffin embedded (PE) and fresh frozen (FF) specimens. 1p36 region and p53 locus in BLC2-negative cases were investigated using dual color probes. Karyotype analysis was available in a subset of cases. BCL2 rearrangements were detected in 39 cases (51,3%). Of the remaining 37, 6 showed IGH rearrangement, and were further tested: 1 showed variant BCL2 translocation, 1 had BCL6 rearrangement, and the other 4 were negative for further gene rearrangements. FISH on FF specimens detected small BCL2+ clones in cases otherwise categorized as BCL2-. 1p36 and p53 deletion were observed in 1 and 8 BCL2- FLs, respectively. Karyotype analysis documented 3q, 1p and BCL6 alternative abnormalities in 3 cases. In conclusion, BCL2 rearrangement is not a constant finding in FL, its frequency being probably affected by geographical factors. Thus, it should not be considered as a reliable molecular marker in the follow up of the disease, unless it is found to be present at the initial diagnosis of FL. Alternative genetic aberrations exist in BCL2-negative cases.
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Affiliation(s)
| | - Deborah Marchiori
- Unit of Pathology, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Sofia Facchi
- Unit of Pathology, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Vittoria Martin
- Institute of Pathology, Ente Ospedaliero Cantonale (EOC), Locarno, Switzerland
| | - Leonardo Campiotti
- Unit of Internal Medicine, Department of Medicine and Surgery, Università degli Studi dell'Insubria, Varese, Italy
| | - Michele Merli
- Unit of Hematology, ASST dei Sette Laghi, Varese, Italy
| | - Fausto Sessa
- Unit of Pathology, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | | | - Silvia Uccella
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20072 Pieve Emanule, Milan, Italy; Pathology Service, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan 20089, Italy.
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2
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Alnughmush A, Fakih RE, Mohammed S, Aljurf M. Pediatric-type follicular lymphoma: a short review. Int J Hematol Oncol 2022; 11:IJH41. [PMID: 36514787 PMCID: PMC9732916 DOI: 10.2217/ijh-2022-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 11/03/2022] [Indexed: 11/23/2022] Open
Abstract
Pediatric-type follicular lymphoma is an uncommon and newly recognized entity of lymphoid neoplasm commonly encountered in the young population. Despite its indolent clinical course and localized nodal involvement, it has been characterized by its high-grade histopathological features. The overlapping features between this disease and several entities have made approaching this unique entity significantly challenging, with all such features being reflected in the strict diagnostic criteria highlighted by the WHO 2016 lymphoid malignancy classification. Despite its characteristic high-grade histology, its cure rates have remained high, with relapse and transformation rarely occurring. Interestingly, several cases have achieved remission following nodal disease resection, possibly eliminating the need for chemotherapy and radiation and preventing long-term morbidities from later approaches in disease survivors.
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Affiliation(s)
- Ahmed Alnughmush
- Section of Hematology & Bone Marrow Transplant, King Faisal Specialist Hospital & Research Center, Riyadh, Kingdom of Saudi Arabia,Author for correspondence:
| | - Riad El Fakih
- Section of Hematology & Bone Marrow Transplant, King Faisal Specialist Hospital & Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Shamayel Mohammed
- Department of Pathology, King Faisal Specialist Hospital & Research Center, Riyadh, Kingdom of Saudi Arabia
| | - Mahmoud Aljurf
- Section of Hematology & Bone Marrow Transplant, King Faisal Specialist Hospital & Research Center, Riyadh, Kingdom of Saudi Arabia
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3
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Distinct clinical and genetic features of hepatitis B virus-associated follicular lymphoma in Chinese patients. Blood Adv 2022; 6:2731-2744. [PMID: 35030632 PMCID: PMC9092402 DOI: 10.1182/bloodadvances.2021006410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 12/19/2021] [Indexed: 12/15/2022] Open
Abstract
Hepatitis B virus (HBV) infection has been associated with an increased risk for B-cell lymphomas. We previously showed that 20% of diffuse large B-cell lymphoma (DLBCL) patients from China, an endemic area of HBV infection, have chronic HBV infection (surface antigen positive, HBsAg+) and are characterized by distinct clinical and genetic features. Here, we showed that 24% of follicular lymphoma (FL) Chinese patients are HBsAg+. Compared to the HBsAg-negative FL patients, HBsAg+ patients are younger, have a higher histological grade at diagnosis and have a higher incidence of disease progression within 24 months. Moreover, by sequencing the genomes of 109 FL tumors, we observed enhanced mutagenesis and distinct genetic profile in HBsAg+ FLs, with a unique set of preferentially mutated genes (TNFAIP3, FAS, HIST1H1C, KLF2, TP53, PIM1, TMSB4X, DUSP2, TAGAP, LYN and SETD2), but lack of the hallmark of HBsAg-negative FLs, i.e., IGH/BCL2 translocations and CREBBP mutations. Transcriptomic analyses further showed that HBsAg+ FLs displayed gene-expression signatures resembling the activated B-cell-like subtype of DLBCL, involving IRF4-targeted genes and NF-κB/MYD88 signaling pathways. Finally, we identified an increased infiltration of CD8+ memory T-cells, CD4+ Th1-cells, and M1-macrophages and higher T-cell exhaustion gene signature in HBsAg+ FL samples. Taken together, we present new genetic/epigenetic evidence that links chronic HBV infection to B-cell lymphomagenesis, and HBV-associated FL is likely to have a distinct cell-of-origin and represent as a separate subtype of FL. Targetable genetic/epigenetic alterations identified in tumors and their associated tumor microenvironment may provide potential novel therapeutic approaches for this subgroup of patients.
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4
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Cucco F, Barrans S, Sha C, Clipson A, Crouch S, Dobson R, Chen Z, Thompson JS, Care MA, Cummin T, Caddy J, Liu H, Robinson A, Schuh A, Fitzgibbon J, Painter D, Smith A, Roman E, Tooze R, Burton C, Davies AJ, Westhead DR, Johnson PWM, Du MQ. Distinct genetic changes reveal evolutionary history and heterogeneous molecular grade of DLBCL with MYC/BCL2 double-hit. Leukemia 2020; 34:1329-1341. [PMID: 31844144 PMCID: PMC7192846 DOI: 10.1038/s41375-019-0691-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 11/22/2019] [Accepted: 12/06/2019] [Indexed: 12/11/2022]
Abstract
Using a Burkitt lymphoma-like gene expression signature, we recently defined a high-risk molecular high-grade (MHG) group mainly within germinal centre B-cell like diffuse large B-cell lymphomas (GCB-DLBCL), which was enriched for MYC/BCL2 double-hit (MYC/BCL2-DH). The genetic basis underlying MHG-DLBCL and their aggressive clinical behaviour remain unknown. We investigated 697 cases of DLBCL, particularly those with MYC/BCL2-DH (n = 62) by targeted sequencing and gene expression profiling. We showed that DLBCL with MYC/BCL2-DH, and those with BCL2 translocation, harbour the characteristic mutation signatures that are associated with follicular lymphoma and its high-grade transformation. We identified frequent MYC hotspot mutations that affect the phosphorylation site (T58) and its adjacent amino acids, which are important for MYC protein degradation. These MYC mutations were seen in a subset of cases with MYC translocation, but predominantly in those of MHG. The mutations were more frequent in double-hit lymphomas with IG as the MYC translocation partner, and were associated with higher MYC protein expression and poor patient survival. DLBCL with MYC/BCL2-DH and those with BCL2 translocation alone are most likely derived from follicular lymphoma or its precursor lesion, and acquisition of MYC pathogenic mutations may augment MYC function, resulting in aggressive clinical behaviour.
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Affiliation(s)
- Francesco Cucco
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Sharon Barrans
- Haematological Malignancy Diagnostic Service, St James' University Hospital, Leeds, UK
| | - Chulin Sha
- Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | | | - Simon Crouch
- Department of Health Sciences, University of York, York, UK
| | - Rachel Dobson
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Zi Chen
- Department of Pathology, University of Cambridge, Cambridge, UK
| | | | - Matthew A Care
- Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Thomas Cummin
- Cancer Research UK Centre and Southampton Clinical Trials Unit, University of Southampton, Southampton, UK
| | - Josh Caddy
- Cancer Research UK Centre and Southampton Clinical Trials Unit, University of Southampton, Southampton, UK
| | - Hongxiang Liu
- Haematopathology and Oncology Diagnostics Service, Cambridge University NHS Foundation Trust, Cambridge, UK
| | - Anne Robinson
- Haematopathology and Oncology Diagnostics Service, Cambridge University NHS Foundation Trust, Cambridge, UK
| | - Anna Schuh
- Department of Oncology, University of Oxford, Oxford, UK
| | - Jude Fitzgibbon
- Centre for Haemato-Oncology, Barts Cancer Institute, London, UK
| | - Daniel Painter
- Department of Health Sciences, University of York, York, UK
| | | | - Eve Roman
- Department of Health Sciences, University of York, York, UK
| | - Reuben Tooze
- Haematological Malignancy Diagnostic Service, St James' University Hospital, Leeds, UK
| | - Catherine Burton
- Haematological Malignancy Diagnostic Service, St James' University Hospital, Leeds, UK
| | - Andrew J Davies
- Cancer Research UK Centre and Southampton Clinical Trials Unit, University of Southampton, Southampton, UK
| | | | - Peter W M Johnson
- Cancer Research UK Centre and Southampton Clinical Trials Unit, University of Southampton, Southampton, UK
| | - Ming-Qing Du
- Department of Pathology, University of Cambridge, Cambridge, UK.
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5
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Zhu Z, Li T, Zhang X, Zhang Z, Zhu D, Lin P, Tu S, Ren W. Molecular and clinical progress in follicular lymphoma lacking the t(14;18) translocation (Review). Int J Oncol 2019; 56:7-17. [PMID: 31789408 DOI: 10.3892/ijo.2019.4917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/25/2019] [Indexed: 11/05/2022] Open
Abstract
Although the majority of patients with follicular lymphoma (FL) harbor the t(14;18)(q32;q21) IGH/BCL2 gene rearrangement that leads to the overexpression of BCL2 protein, approximately 20% of FL cases lack t(14;18)(q32;q21). It is considered that BCL2 overexpression underscores the development of the majority of cases of FL and their transformation to more aggressive lymphoma [known as transformed FL (tFL)]. However, FL cases lacking the t(14;18)(q32;q21) translocation exhibit symptoms analogous to their t(14;18)‑positive counterparts. An important goal of recent research on FL has been to clarify the distinctions between the two different forms of FL. Numerous studies have shed light onto the genetic and molecular features of t(14;18)‑negative FL and the related clinical manifestations. In this review, we summarize the current knowledge of t(14;18)‑negative FL occurring in the lymph nodes with an emphasis on the underlying molecular and clinical features. In addition, novel treatment directions are discussed.
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Affiliation(s)
- Zunmin Zhu
- Institute of Hematology, Henan Renmin Hospital, Zhengzhou, Henan 475000, P.R. China
| | - Tao Li
- Laboratory of Hematology, The First Affiliated Hospital of Zhenzhou University, Zhengzhou, Henan 475000, P.R. China
| | - Xuran Zhang
- Department of Laboratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan 450000, P.R. China
| | - Zhengqiang Zhang
- Immunology Laboratory of Chinese Medicine, Henan University of Chinese Medicine, Zhengzhou, Henan 450008, P.R. China
| | - Dandan Zhu
- Zhengzhou Shenyou Biotechnology, Zhengzhou, Henan 450000, P.R. China
| | - Pei Lin
- Department of Hematopathology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shichun Tu
- Scintillon Institute for Biomedical and Bioenergy Research, San Diego, CA 92121, USA
| | - Weihong Ren
- Department of Laboratory Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou, Henan 450000, P.R. China
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Levy D, Bertoldi ERM, Ruiz JLM, Pereira J, Bydlowski SP. Presence of t(14;18) translocation in healthy individuals varies according to ethnic background in the Brazilian population. ACTA ACUST UNITED AC 2017; 50:e6172. [PMID: 28591381 PMCID: PMC5463534 DOI: 10.1590/1414-431x20176172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 03/27/2017] [Indexed: 11/21/2022]
Abstract
Several groups have demonstrated that healthy individuals can present the t(14;18) translocation. In this report, the presence of the translocation was examined in healthy blood donors in Brazil, a country considered an ethnic melting pot. The translocation was detected by nested PCR in 227 peripheral blood samples from individuals with different ethnic backgrounds. The t(14;18) translocation was found in 45 of 85 White individuals (52.94%); in 57 of 72 Black individuals (79.17%); and in 68 of 70 individuals (97.14%) of Japanese-descent. In conclusion, the frequency of the t(14;18) translocation in the Brazilian population varies according to the ethnic background.
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Affiliation(s)
- D Levy
- Laboratório de Genética e Hematologia Molecular (LIM31), Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E R M Bertoldi
- Laboratório de Genética e Hematologia Molecular (LIM31), Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - J L M Ruiz
- Universidade Federal da Integracão Latino-Americana, Porto Belo, Foz do Iguaçu, PR, Brasil
| | - J Pereira
- Laboratório de Genética e Hematologia Molecular (LIM31), Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S P Bydlowski
- Laboratório de Genética e Hematologia Molecular (LIM31), Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil
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7
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Nobili L, Ronchetti D, Taiana E, Neri A. Long non-coding RNAs in B-cell malignancies: a comprehensive overview. Oncotarget 2017; 8:60605-60623. [PMID: 28947998 PMCID: PMC5601166 DOI: 10.18632/oncotarget.17303] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/16/2017] [Indexed: 01/06/2023] Open
Abstract
B-cell malignancies constitute a large part of hematological neoplasias. They represent a heterogeneous group of diseases, including Hodgkin's lymphoma, most non-Hodgkin's lymphomas (NHL), some leukemias and myelomas. B-cell malignancies reflect defined stages of normal B-cell differentiation and this represents the major basis for their classification. Long non-coding RNAs (lncRNAs) are non-protein-coding transcripts longer than 200 nucleotides, for which many recent studies have demonstrated a function in regulating gene expression, cell biology and carcinogenesis. Deregulated expression levels of lncRNAs have been observed in various types of cancers including hematological malignancies. The involvement of lncRNAs in cancer initiation and progression and their attractive features both as biomarker and for therapeutic research are becoming increasingly evident. In this review, we summarize the recent literature to highlight the status of the knowledge of lncRNAs role in normal B-cell development and in the pathogenesis of B-cell tumors.
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Affiliation(s)
- Lucia Nobili
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
| | - Domenica Ronchetti
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
| | - Elisa Taiana
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
| | - Antonino Neri
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Hematology, Fondazione Cà Granda IRCCS Policlinico, Milano, Italy
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8
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Pan Y, Guo Y, Luo Y, Li H, Xu Y. MicroRNA expression profiling of Chinese follicular lymphoma by microarray: A preliminary study. Int Immunopharmacol 2016; 39:41-47. [PMID: 27409728 DOI: 10.1016/j.intimp.2016.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/29/2016] [Accepted: 07/05/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND MicroRNAs (miRNAs) have been widely regarded as crucial regulators in various biological processes involved in carcinogenesis. However, the comprehensive miRNA profiles of Chinese follicular lymphoma (FL) remains completely unknown. METHODS The Exiqon miRCURY LNA™ microRNA Array (v.18.0) was used to detect the miRNA expression profiles of three Chinese FL samples, and compared to three reactive lymphatic nodes (RLN). Quantitative real-time polymerase chain reaction (qRT-PCR) was used to confirm the selected miRNAs in different series. Three databases (miRAnda, miRBase and TargetScan) were used to predict the putative target genes. Bioinformatic analysis (gene ontology analysis and pathway analysis) was performed for further evaluation. RESULTS The microarray assay demonstrated that 1643 miRNAs were expressed; in which 103 miRNAs were upregulated and 68 miRNAs were downregulated, according to P-value (<0.05) and fold change (FC>2-fold). Furthermore, qRT-PCR was used to confirm that miR-17-5p, miR-20a-5p and miR-19a-3p were upregulated, and miR-3615 was downregulated (P<0.05). Bioinformatic analysis (gene ontology analysis and pathway analysis) was used for further evaluation. Pathway analysis indicated that 25 pathways corresponded to differentially expressed miRNAs (P-value cut-off is 0.05). Furthermore, miR-17-5p, miR-20a-5p and miR-19a-3p were validated by qRT-PCR in an independent series including five FL3a and five RLN cases. Data analysis revealed that the changing trend of miR-19a-3p and miR-17-5p expression in the independent series was basically identical with that of the microarray data. CONCLUSIONS Our results are the first to reveal the miRNA expression profiling of Chinese FL and three upregulated miRNAs. Furthermore, the expression of miR-19a-3p and miR-17-5p were found to be significantly upregulated in FL3a. Further study needs to be urgently performed to reveal its potential role in the pathogenesis of FL in the near future.
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Affiliation(s)
- Yi Pan
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China.
| | - Yan Guo
- Department of Epidemiology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Ye Luo
- Department of Pathology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Hua Li
- Department of Endoscopy, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
| | - Yong Xu
- Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, China
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9
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Thomas R, Demeter Z, Kennedy KA, Borst L, Singh K, Valli VE, Le Boedec K, Breen M. Integrated immunohistochemical and DNA copy number profiling analysis provides insight into the molecular pathogenesis of canine follicular lymphoma. Vet Comp Oncol 2016; 15:852-867. [PMID: 27135201 DOI: 10.1111/vco.12227] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 02/21/2016] [Accepted: 02/22/2016] [Indexed: 12/16/2022]
Abstract
Follicular lymphomas (FLs) typically exhibit a chromosome translocation that induces constitutive expression of the anti-apoptotic bcl2 protein and accumulation of additional molecular defects. This rearrangement offers a promising therapeutic target, but its nature as a fundamental driver of FL pathogenesis remains unclear as 15% of cases lack the translocation. We performed an integrated immunohistochemical and genomic investigation of 10 naturally occurring FL cases from domestic dogs, showing that, as with human tumours, they exhibit marked heterogeneity in the frequency and intensity of bcl2 protein expression. Genomic copy number aberrations were infrequent and broadly consistent with those of other canine B-cell lymphoma subtypes. None of the canine FL specimens exhibited a rearrangement consistent with the hallmark translocation of human FL, despite their remarkable histomorphologic similarity. Parallel exploration of canine and human cases may reveal alternative tumour-initiating mechanisms other than BCL2 disruption, yielding a more complete definition of the molecular pathogenesis of FL.
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Affiliation(s)
- R Thomas
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.,Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, USA
| | - Z Demeter
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois, Urbana, IL, USA.,IDEXX Reference Laboratories Inc., West Sacramento, CA, USA
| | - K A Kennedy
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - L Borst
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA
| | - K Singh
- Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Illinois, Urbana, IL, USA
| | - V E Valli
- Visalia Pathology Medical Group, Visalia, CA, USA
| | - K Le Boedec
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana, IL, USA
| | - M Breen
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, NC, USA.,Center for Comparative Medicine and Translational Research, North Carolina State University, Raleigh, NC, USA.,Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, USA.,University of North Carolina at Chapel Hill, Lineberger Comprehensive Cancer Center, Chapel Hill, NC, USA
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10
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Pan Y, Li H, Guo Y, Luo Y, Li H, Xu Y, Deng J, Sun B. A pilot study of long noncoding RNA expression profiling by microarray in follicular lymphoma. Gene 2016; 577:132-9. [DOI: 10.1016/j.gene.2015.11.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/20/2015] [Accepted: 11/20/2015] [Indexed: 10/22/2022]
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11
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Guo S, Chan JKC, Iqbal J, McKeithan T, Fu K, Meng B, Pan Y, Cheuk W, Luo D, Wang R, Zhang W, Greiner TC, Chan WC. EZH2 mutations in follicular lymphoma from different ethnic groups and associated gene expression alterations. Clin Cancer Res 2014; 20:3078-86. [PMID: 24634383 DOI: 10.1158/1078-0432.ccr-13-1597] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Gain-of-function mutations of enhancer of Zeste homolog 2 (EZH2) occur frequently in diffuse large B-cell lymphomas and in follicular lymphomas. However, the frequency of EZH2 mutation in Chinese follicular lymphomas and the potential targets affected by this mutation are unknown. EXPERIMENTAL DESIGN We determined EZH2 codon 641 mutations in Chinese follicular lymphomas (n = 124) and compared them with Western follicular lymphomas (n = 70) using a sensitive pyrosequencing assay. Gene expression profiling (GEP) was performed to determine differential gene expression between the mutated versus unmutated subgroups, and selected genes were validated using immunohistochemistry. RESULTS Our results showed similar frequencies of EZH2 codon 641 mutations in Chinese and Western follicular lymphoma cohorts (16.9% vs. 18.6%, χ(2) test, P = 0.773), including all five reported mutation variants. We observed significant association of EZH2 mutation with low morphologic grade follicular lymphomas (grade 1-2, 23.6% vs. grade 3, 7.7%, χ(2) test, P = 0.02). EZH2 mutations also showed significant association with BCL2 rearrangement in the Chinese cohort (26.8% vs. 8.8%, χ(2) test, P = 0.008) and combined cohorts (26.3% vs. 9.1%, χ(2) test, P = 0.002). GEP analysis identified several genes, including TCF4, FOXP1, TCL1A, BIK, and RASSF6P, with significantly lower mRNA expression (P < 0.01) in mutated cases, and the potential target TCL1A showed consistent results at the protein level. CONCLUSION Similar prevalence of EZH2 mutation in two ethnic groups suggests shared pathogenetic mechanisms. The much lower frequency of EZH2 mutation in cases without BCL2 translocation suggests a different pattern of evolution of this subtype of follicular lymphoma. GEP studies showed a set of differentially expressed genes and suggested that EZH2 mutation may help to lock the tumor cells at the germinal center stage of differentiation.
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Affiliation(s)
- Shuangping Guo
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NebraskaAuthors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - John K C Chan
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Javeed Iqbal
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Timothy McKeithan
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Kai Fu
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Bin Meng
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Yi Pan
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Wah Cheuk
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Donglan Luo
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Ruian Wang
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Weiwei Zhang
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Timothy C Greiner
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Wing C Chan
- Authors' Affiliations: Department of Pathology, Xi Jing Hospital, the Fourth Military Medical University, Xi'an, Shaan Xi Province; Department of Pathology, Queen Elizabeth Hospital, Hong Kong; Department of Pathology, Shandong University School of Medicine, Jinan, Shandong Province; Department of Pathology, Tianjin Cancer Hospital; Department of Pathology, Guangdong General Hospital and Guangdong Academy of Medical Sciences, Guangzhou, China; and Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska
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Argyris PP, Dolan M, Piperi E, Tosios KI, Pambuccian SE, Koutlas IG. Oral follicular lymphomas. A short report of 8 cases with assessment of the IGH/BCL2 gene fusion with fluorescence in situ hybridization. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:343-7. [PMID: 23953419 DOI: 10.1016/j.oooo.2013.06.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 06/11/2013] [Accepted: 06/14/2013] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To present the clinicopathologic features and confirm the presence of the IGH/BCL2 gene fusion in an oral follicular lymphoma (OFL) series. STUDY DESIGN Cases of OFLs were retrieved from a data base of non-Hodgkin lymphomas (NHL). Fluorescence in situ hybridization (FISH) was performed to confirm the IGH/BCL2 fusion. RESULTS Eight (8.7%) of 92 NHL were OFLs. Six (75%) patients were male and two female (mean age: 73.4 ± 14.8). The most frequent site was the palate. Five of the 8 patients are alive and without disease. Five (three grade 1 and two grade 2) of six successfully hybridized cases revealed the IGH/BCL2 gene fusion. The sixth case, a grade 3 follicular lymphoma (FL), demonstrated multiple BCL2 signals without IGH/BCL2 fusion. CONCLUSIONS OFLs exhibit an indolent clinical behavior. In the present study, 5/6 cases in which FISH was successful had an IGH/BCL2 fusion as would result from the t(14; 18)(q32; q21) translocation commonly seen in FL of extraoral sites.
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Affiliation(s)
- Prokopios P Argyris
- Department of Oral Pathology and Medicine, School of Dentistry, National and Kapodistrian University of Athens, Greece
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