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Chen H, Pan T, He Y, Zeng R, Li Y, Yi L, Zang H, Chen S, Duan Q, Xiao L, Zhou H. Primary Mediastinal B-Cell Lymphoma: Novel Precision Therapies and Future Directions. Front Oncol 2021; 11:654854. [PMID: 33869061 PMCID: PMC8044947 DOI: 10.3389/fonc.2021.654854] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/01/2021] [Indexed: 11/13/2022] Open
Abstract
Primary mediastinal large B-cell lymphoma (PMBCL) is a distinct clinicopathologic disease from other types of diffuse large B-cell lymphoma (DLBCL) with unique prognostic features and limited availability of clinical data. The current standard treatment for newly diagnosed PMBCL has long been dependent on a dose-intensive, dose-adjusted multi-agent chemotherapy regimen of rituximab plus etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (DA-R-EPOCH). Recent randomized trials have provided evidence that R-CHOP followed by consolidation radiotherapy (RT) is a valuable alternative option to first-line treatment. For recurrent/refractory PMBCL (rrPMBCL), new drugs such as pembrolizumab and CAR-T cell therapy have proven to be effective in a few studies. Positron emission tomography-computed tomography (PET-CT) is the preferred imaging modality of choice for the initial phase of lymphoma treatment and to assess response to treatment. In the future, baseline quantitative PET-CT can be used to predict prognosis in PMBCL. This review focuses on the pathology of PMBCL, underlying molecular basis, treatment options, radiotherapy, targeted therapies, and the potential role of PET-CT to guide treatment choices in this disease.
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Affiliation(s)
- Huan Chen
- Department of Lymphoma and Hematology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Tao Pan
- Department of Lymphoma and Hematology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China.,The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yizi He
- Department of Lymphoma and Hematology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Ruolan Zeng
- Department of Lymphoma and Hematology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Yajun Li
- Department of Lymphoma and Hematology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Liming Yi
- Department of Human Anatomy, Hunan University of Medicine, Huaihua, China
| | - Hui Zang
- Department of Basic Medicine, Yiyang Medical College, Yiyang, China
| | - Siwei Chen
- Department of Histology and Embryology of School of Basic Medical Science, Central South University, Changsha, China
| | - Qintong Duan
- Department of Histology and Embryology of School of Basic Medical Science, Central South University, Changsha, China
| | - Ling Xiao
- Department of Histology and Embryology of School of Basic Medical Science, Central South University, Changsha, China
| | - Hui Zhou
- Department of Lymphoma and Hematology, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
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Eliassen E, Lum E, Pritchett J, Ongradi J, Krueger G, Crawford JR, Phan TL, Ablashi D, Hudnall SD. Human Herpesvirus 6 and Malignancy: A Review. Front Oncol 2018; 8:512. [PMID: 30542640 PMCID: PMC6277865 DOI: 10.3389/fonc.2018.00512] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 10/19/2018] [Indexed: 12/21/2022] Open
Abstract
In order to determine the role of human herpesvirus 6 (HHV-6) in human disease, several confounding factors, including methods of detection, types of controls, and the ubiquitous nature of the virus, must be considered. This is particularly problematic in the case of cancer, in which rates of detection vary greatly among studies. To determine what part, if any, HHV-6 plays in oncogenesis, a review of the literature was performed. There is evidence that HHV-6 is present in certain types of cancer; however, detection of the virus within tumor cells is insufficient for assigning a direct role of HHV-6 in tumorigenesis. Findings supportive of a causal role for a virus in cancer include presence of the virus in a large proportion of cases, presence of the virus in most tumor cells, and virus-induced in-vitro cell transformation. HHV-6, if not directly oncogenic, may act as a contributory factor that indirectly enhances tumor cell growth, in some cases by cooperation with other viruses. Another possibility is that HHV-6 may merely be an opportunistic virus that thrives in the immunodeficient tumor microenvironment. Although many studies have been carried out, it is still premature to definitively implicate HHV-6 in several human cancers. In some instances, evidence suggests that HHV-6 may cooperate with other viruses, including EBV, HPV, and HHV-8, in the development of cancer, and HHV-6 may have a role in such conditions as nodular sclerosis Hodgkin lymphoma, gastrointestinal cancer, glial tumors, and oral cancers. However, further studies will be required to determine the exact contributions of HHV-6 to tumorigenesis.
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Affiliation(s)
- Eva Eliassen
- HHV-6 Foundation, Santa Barbara, CA, United States
| | - Emily Lum
- HHV-6 Foundation, Santa Barbara, CA, United States
| | - Joshua Pritchett
- Department of Internal Medicine, Mayo Clinic, Rochester, MN, United States
| | - Joseph Ongradi
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Gerhard Krueger
- Department of Pathology and Laboratory Medicine, University of Texas- Houston Medical School, Houston, TX, United States
| | - John R Crawford
- Department of Neurosciences and Pediatrics, University of California San Diego and Rady Children's Hospital, San Diego, CA, United States
| | - Tuan L Phan
- HHV-6 Foundation, Santa Barbara, CA, United States.,Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, United States
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Drexler HG, Ehrentraut S, Nagel S, Eberth S, MacLeod RAF. Malignant hematopoietic cell lines: in vitro models for the study of primary mediastinal B-cell lymphomas. Leuk Res 2014; 39:18-29. [PMID: 25480038 DOI: 10.1016/j.leukres.2014.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/30/2014] [Accepted: 11/05/2014] [Indexed: 11/27/2022]
Abstract
Primary mediastinal B-cell lymphoma (PMBL) is a highly aggressive disease with a unique set of biological, clinical, morphological, immunological and in particular genetic features that in the molecular era of defining lymphomas clearly distinguishes it as a separate entity from other diffuse large B-cell lymphomas (DLBCL). A precise molecular diagnosis of PMBL can be achieved by gene expression profiling. The signature gene expression profile of PMBL is more closely related to classic Hodgkin lymphoma (cHL) than to other DLBCL subgroups. A number of common genetic aberrations in PMBL and cHL further underscore their close relationship. To investigate the pathobiology of lymphomas in depth, many groups have turned to cell lines that are suitable models facilitating molecular studies and providing unique insights. For the purposes of the current perspective, we focus on four bona fide PMBL-derived cell lines (FARAGE, KARPAS-1106, MEDB-1, U-2940) that we identified and validated as such through hierarchical cluster analysis among a large collection of leukemia-lymphoma cell lines. These gene expression profiles showed that the four PMBL cell lines represent a distinct entity and are most similar to cHL cell lines, confirming derivation from a related cell type. A validated cell line resource for PMBL should assist those seeking druggable targets in this entity. This review aims to provide a comprehensive overview of the currently available cellular models for the study of PMBL.
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Affiliation(s)
- Hans G Drexler
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany.
| | - Stefan Ehrentraut
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
| | - Stefan Nagel
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
| | - Sonja Eberth
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
| | - Roderick A F MacLeod
- Leibniz-Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Dept. Human and Animal Cell Lines, Braunschweig, Germany
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Ritz O, Rommel K, Dorsch K, Kelsch E, Melzner J, Buck M, Leroy K, Papadopoulou V, Wagner S, Marienfeld R, Brüderlein S, Lennerz JK, Möller P. STAT6-mediated BCL6 repression in primary mediastinal B-cell lymphoma (PMBL). Oncotarget 2014; 4:1093-102. [PMID: 23852366 PMCID: PMC3759668 DOI: 10.18632/oncotarget.1149] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Primary mediastinal B-cell lymphoma (PMBL) is characterized by aberrant activation of JAK/STAT-signaling resulting in constitutive presence of phosphorylated STAT6 (pSTAT6). In primary PMBL samples pSTAT6 is only expressed in a sub-population of lymphoma cells in a pattern that is reminiscent of that of the BCL6 oncogene. Double-fluorescence staining was carried out to determine the association between these two proteins in ten primary PMBL cases and three available PMBL cell line models. Surprisingly, only a minute fraction of double-positive nuclei was observed, while each sample contained considerable fractions of single-positive pSTAT6 and BCL6 nuclei. The intratumoral coexistence of BCL6+/pSTAT6− and BCL6−/pSTAT6+ subpopulations suggests a negative interaction between these factors. In silico screening of the STAT6 /BCL6 promoters for DNA consensus binding sites identified five STAT-binding-sites in the BCL6 promoter. We confirmed STAT6 binding to the BCL6 promoter in vitro and in vivo by band shift / super shift assays and chromatin immunoprecipitations. Using BCL6 luciferase reporter assays, depletion of STAT6 by siRNA, and ectopic overexpression of a constitutive active STAT6 mutant, we proved that pSTAT6 is sufficient to transcriptionally repress BCL6. Recently developed small molecule inhibitors 79-6 and TG101348 that increases BCL6 target gene expression and decreases pSTAT6 levels, respectively, demonstrate that a combined targeting results in additive efficacy regarding their negative effect on cell viability. The delineated pSTAT6-mediated molecular repression mechanism links JAK/STAT to BCL6-signaling in PMBL and may carry therapeutic potential.
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Affiliation(s)
- Olga Ritz
- Institute of Pathology, University Ulm, Ulm, Germany
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Abstract
INTRODUCTION Brentuximab vedotin is an antibody-drug conjugate which consists of the anti-CD30 monoclonal antibody cAC10 conjugated with the cytotoxic agent monomethyl auristatin E (MMAE). Brentuximab vedotin has been approved by the US Food and Drug Administration for the treatment of relapsed or refractory Hodgkin's lymphoma (HL) and anaplastic large cell lymphoma (ALCL). The efficacy of brentuximab vedotin in other CD30(+) lymphomas is currently being investigated. AREAS COVERED In this paper, we review the currently available treatment options for systemic peripheral T-cell lymphomas (PTCL) and the role of brentuximab vedotin in relapsed or refractory ALCL. In addition, ongoing clinical trial of brentuximab vedotin in relapsed PTCL and combination therapy with other chemotherapies for initial treatment of CD30 lymphoma will also be reviewed. EXPERT OPINION Brentuximab vedotin has established its role in the treatment of relapsed or refractory HL and ALCL. In the next few years, the efficacy of this agent in other CD30(+) lymphomas will be described. The safety and efficacy of several brentuximab-based combination regimens, including use as frontline chemotherapy is under investigation.
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Affiliation(s)
- Yasuhiro Oki
- Department of Lymphoma and Myeloma, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Avilés A, Neri N, Fernández R, Huerta-Guzmán J, Nambo MJ. Randomized clinical trial to assess the efficacy of radiotherapy in primary mediastinal large B-lymphoma. Int J Radiat Oncol Biol Phys 2011; 83:1227-31. [PMID: 22172907 DOI: 10.1016/j.ijrobp.2011.09.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2010] [Revised: 08/25/2011] [Accepted: 09/12/2011] [Indexed: 10/14/2022]
Abstract
PURPOSE We developed a controlled clinical trial to assess the efficacy and toxicity of adjuvant-involved field radiotherapy (IFRT) in patients with primary mediastinal B-cell lymphoma that achieved complete response after the patients were treated with cyclophosphamide, doxorubicin, vincristine, prednisone, and rituximab (R-CHOP-14). METHODS AND MATERIALS Between January 2001 and June 2004, 124 consecutive patients who were in complete remission after dose dense chemotherapy and rituximab administration (R-CHOP14) were randomly assigned to received IFRT (30 Gy). Sixty-three patients received IFR, and 61 patients did not (control group). RESULTS The study aimed to include 182 patients in each arm but was closed prematurely because in a security analysis (June 2004), progression and early relapse were more frequent in patients that did not received IFRT. Patients were followed until March 2009, at which point actuarial curves at 10 years showed that progression free-survival was 72% in patients who received IFR and 20% in the control group (p < 0.001), overall survival was 72% and 31%, respectively (p < 0.001). Acute toxicity was mild and well tolerated. DISCUSSION Adjuvant radiotherapy to sites of bulky disease was the only difference to have an improvement in outcome in our patients; the use of rituximab during induction did not improve complete response rates and did affect overall survival; patients who received rituximab but not IFRT had a worse prognosis. CONCLUSIONS The use of IFRT in patients with primary mediastinal B-cell lymphoma who achieved complete response remain as the best treatment available, even in patients that received rituximab during induction.
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Affiliation(s)
- Agustin Avilés
- Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, México, D. F., Mexico.
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Primary mediastinal large B-cell lymphoma (PMLBCL) in Chinese patients: clinical characteristics and prognostic factors. Int J Hematol 2011; 94:178-184. [DOI: 10.1007/s12185-011-0898-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2011] [Revised: 07/05/2011] [Accepted: 07/05/2011] [Indexed: 12/31/2022]
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Rieger M, Österborg A, Pettengell R, White D, Gill D, Walewski J, Kuhnt E, Loeffler M, Pfreundschuh M, Ho AD. Primary mediastinal B-cell lymphoma treated with CHOP-like chemotherapy with or without rituximab: results of the Mabthera International Trial Group study. Ann Oncol 2010; 22:664-670. [PMID: 20724576 DOI: 10.1093/annonc/mdq418] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The aim of this subgroup analysis of the Mabthera International Trial Group study was to evaluate the impact of chemotherapy and rituximab in primary mediastinal B-cell lymphoma (PMBCL) in comparison to other diffuse large B-cell lymphoma (DLBCL). METHODS Patients were randomly assigned to six cycles of CHOP-like regimens with or without rituximab. RESULTS Of 824 patients enrolled, 87 had PMBCL and 627 other types of DLBCL. Rituximab increased the rates of complete remission (unconfirmed) in both PMBCL (from 54% to 80%, P = 0.015) and DLBCL (from 72% to 87%, P < 0.001). In PMBCL, rituximab virtually eliminated progressive disease (PD) (2.5% versus 24%, P < 0.001), whereas without rituximab, PD was more frequent in PMBCL than in DLBCL (24% versus 10%, P = 0.010). With a median observation time of 34 months, 3-year event-free survival (EFS) was improved by rituximab for PMBCL (78% versus 52%, P = 0.012) and for DLBCL (81% versus 61%, P < 0.001). Overall survival benefit was similar for DLBCL (93% versus 85%, P < 0.001) and PMBCL (89% versus 78%, P = 0.158). CONCLUSION In young patients with PMBCL (age-adjusted International Prognostic Index 0-1), rituximab added to six cycles of CHOP-like chemotherapy increases response rate and EFS to the same extent as other DLBCL. The combination of rituximab with CHOP chemotherapy is an effective treatment in PMBCL with good prognosis features.
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Affiliation(s)
- M Rieger
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany.
| | - A Österborg
- Departments of Oncology, Haematology, Karolinska University Hospital, Stockholm, Sweden
| | | | - D White
- Dalhousie University, Halifax, Nova Scotia for the NCIC Clinical Trials Group, Kingston, Ontario, Canada
| | - D Gill
- Department of Haematology, Princess Alexandra Hospital, Queensland, Australia
| | - J Walewski
- Department of Lymphoma, Maria Sklodowska-Curie Institute and Oncology Centre, Warszawa, Poland
| | - E Kuhnt
- Clinical Trial Centre Leipzig, University of Leipzig, Leipzig
| | - M Loeffler
- Institute of Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig
| | | | - A D Ho
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
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Treatment of primary mediastinal large B cell lymphoma with an alternating chemotherapy regimen based on high-dose methotrexate. Ann Hematol 2008; 88:433-9. [PMID: 18853160 DOI: 10.1007/s00277-008-0625-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2007] [Accepted: 12/21/2007] [Indexed: 10/21/2022]
Abstract
Primary mediastinal large B cell lymphomas (MLCL) differ from other diffuse large cell lymphomas, leading to a description as a separate entity in the current World Health Organization classification. Dose intensification improves long-term results, but no standard therapy has been established so far. We investigated the use of a high-dose methotrexate-based alternating chemotherapy regimen (B-ALL protocol of the German ALL study group) followed by consolidative mediastinal radiotherapy first as a single-center trial, then later as a prospective multicenter trial in 44 patients with a median age of 33 years. Response rates exceeded 90% with an overall survival rate of 80% in the single-center group (8.6 years median follow-up) and 82% in the multicenter group (2.5 years follow-up).Short-term toxicity was manageable, but required hospitalization: the rates of grade 3 or 4 toxicity were 20% (for mucositis), 42% (for neutropenia), 29% (for thrombocytopenia), and 9% (for neutropenic fever). No relapse occurred more than 2 years after diagnosis and initiation of treatment, but unfortunately, no patient with overt progression or relapse within these 2 years could be salvaged. Future directions in the treatment of MLCL will not focus on further dose intensification, but rather on the incorporation of (radio)immunotherapy as a therapeutic tool and gene expression profiling as well as positron emission tomography-computed tomography as stratifying tools.
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