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Robinson JE, Greiner TC, Bouska AC, Iqbal J, Cutucache CE. Identification of a Splenic Marginal Zone Lymphoma Signature: Preliminary Findings With Diagnostic Potential. Front Oncol 2020; 10:640. [PMID: 32457837 PMCID: PMC7225304 DOI: 10.3389/fonc.2020.00640] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/06/2020] [Indexed: 12/12/2022] Open
Abstract
Splenic marginal zone lymphoma (SMZL) is a rare, indolent non-Hodgkin's lymphoma that affects 0. 13 per 100,000 persons annually. Overall survival of SMZL is estimated to reach 8-11 years in most cases, but up to 30% of SMZL cases develop aggressive presentations resulting in greatly diminished time of survival. SMZL presents with a very heterogeneous molecular profile, making diagnosis problematic, and accurate prognosis even less likely. The study herein has identified a potential diagnostic gene expression signature with highly specific predictive utility, coined the SMZL-specific Gene Expression Signature (SSGES). Additionally, five of the most impactful markers identified within the SSGES were selected for a five-protein panel, for further evaluation among control and SMZL patient samples. These markers included EME2, ERCC5, SETBP1, USP24, and ZBTB32. When compared with control spleen and other B-cell lymphoma subtypes, significantly higher expression was noticed in SMZL samples when stained for EME2 and USP24. Additionally, ERCC5, SETBP1, USP24, and ZBTB32 staining displayed indications of prognostic value for SMZL patients. Delineation of the SSGES offers a unique SMZL signature that could provide diagnostic utility for a malignancy that has historically been difficult to identify, and the five-marker protein panel provides additional support for such findings. These results should be further investigated and validated in subsequent molecular investigations of SMZL so it may be potentially incorporated into standard oncology practice for improving the understanding and outlook for SMZL patients.
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Affiliation(s)
- Jacob E Robinson
- Department of Biology, University of Nebraska Omaha, Omaha, NE, United States
| | - Timothy C Greiner
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Alyssa C Bouska
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Javeed Iqbal
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
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First-line treatment with bendamustine and rituximab, in patients with intermediate-/high-risk splenic marginal zone lymphomas. Med Oncol 2017; 35:15. [PMID: 29288421 DOI: 10.1007/s12032-017-1076-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/27/2017] [Indexed: 01/18/2023]
Abstract
Splenic marginal zone lymphomas (SMZLs) are rare indolent B cell neoplasms that affect the spleen, bone marrow, and blood. Although they have an indolent course in the majority of patients, who have a median survival of 8-10 years, ∼ 30% may experience a worse outcome. The prognostic criteria of progression are lymph node and extra-nodal involvement, high lymphocyte counts, anaemia, and thrombocytopenia. The treatment of SMZLs include a "wait and watch strategy", splenectomy, and alkylating agents ± rituximab. We here describe data relating to 70 patients with intermediate-/high-risk SMZLs, who received rituximab/bendamustine as first-line treatment for a median of 60 days (range 1-75) after diagnosis. Sixty patients (86%) achieved a complete response (CR), and seven (10%) a partial response (PR). Three patients (4.3%) experienced disease progression (PD). The median duration of remission was 18 months. Side effects were generally mild. Our findings suggest that rituximab/bendamustine is a feasible treatment option in patients with intermediate-/high-risk SMZLs.
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Guerrini F, Paolicchi M, Ghio F, Ciabatti E, Grassi S, Salehzadeh S, Ercolano G, Metelli MR, Del Re M, Iovino L, Petrini I, Carulli G, Cecconi N, Rousseau M, Cervetti G, Galimberti S. The Droplet Digital PCR: A New Valid Molecular Approach for the Assessment of B-RAF V600E Mutation in Hairy Cell Leukemia. Front Pharmacol 2016; 7:363. [PMID: 27790140 PMCID: PMC5061817 DOI: 10.3389/fphar.2016.00363] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 09/20/2016] [Indexed: 12/22/2022] Open
Abstract
Hairy cell leukemia (HCL) is a chronic lymphoproliferative B-cell disorder where the B-RAF V600E mutation has been recently detected, as reported for solid neoplasias but not for other B-cell lymphomas. The digital droplet PCR (dd-PCR) is a molecular technique that, without standard references, is able to accurately quantitate DNA mutations. ddPCR could be an useful instrument for the detection of the B-RAF V600E mutation in HCL, where the minimal residual disease monitoring is fundamental for planning a patients-targeted treatment in the era of new anti-CD20 and anti-RAF compounds. This retrospective study enrolled 47 patients observed at the Hematology Unit of the University of Pisa, Italy, from January 2005 to January 2014: 27 patients were affected by “classic” HCL, two by the variant HCL (vHCL), and 18 by splenic marginal zone lymphoma (SMZL). The aim of the study was to compare dd-PCR to “classic” quantitative PCR (QT-PCR) in terms of sensitivity and specificity and to demonstrate its possible use in HCL. Results showed that: (1) the sensitivity of dd-PCR is about half a logarithm superior to QT-PCR (5 × 10-5 vs. 2.5 × 10-4), (2) the specificity of the dd-PCR is comparable to QT-PCR (no patient with marginal splenic lymphoma or HCL variant resulted mutated), (3) its high sensitivity would allow to use dd-PCR in the monitoring of MRD. At the end of treatment, among patients in complete remission, 33% were still MRD-positive by dd-PCR versus 28% by QT-PCR versus 11% by the evaluation of the B-cell clonality, after 12 months, dd-PCR was comparable to QT-PCR and both detected the B-RAF mutation in 15% of cases defined as MRD-negative by IgH rearrangement. Moreover, (4) the feasibility and the costs of dd-PCR are comparable to those of QT-PCR. In conclusion, our study supports the introduction of dd-PCR in the scenario of HCL, also during the follow-up.
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Affiliation(s)
- Francesca Guerrini
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
| | - Matteo Paolicchi
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Francesco Ghio
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
| | - Elena Ciabatti
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Susanna Grassi
- Section of Hematology, Department of Clinical and Experimental Medicine, University of PisaPisa, Italy; GeNoMEC, University of SienaSiena, Italy
| | - Serena Salehzadeh
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
| | - Giacomo Ercolano
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Maria R Metelli
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Marzia Del Re
- Clinical Pharmacology and Pharmacogenetic Unit, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
| | - Lorenzo Iovino
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
| | - Iacopo Petrini
- Section of Pathology, Department of Translational Medicine and New Technologies, University of Pisa Pisa, Italy
| | - Giovanni Carulli
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
| | - Nadia Cecconi
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Martina Rousseau
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Giulia Cervetti
- UO hematology, Azienda Ospedaliero-Universitaria Pisana Pisa, Italy
| | - Sara Galimberti
- Section of Hematology, Department of Clinical and Experimental Medicine, University of Pisa Pisa, Italy
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