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Danesin N, Bonaldi L, Martines A, Nalio S, Bertorelle R, Compagno S, Marcato R, Manni S, Scarmozzino F, Pizzi M, Tos APD, Cellini A, Scapinello G, Visentin A, Trentin L, Piazza F. Impact of the presence and number of chromosomal abnormalities on the clinical outcome in Waldenström Macroglobulinemia: a monocentric experience. Ann Hematol 2024:10.1007/s00277-024-05770-4. [PMID: 38687347 DOI: 10.1007/s00277-024-05770-4] [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: 02/07/2024] [Accepted: 04/19/2024] [Indexed: 05/02/2024]
Abstract
The prognostic and predictive role of specific gene mutations in Waldenström Macroglobulinemia (WM) is well-ascertained whereas the clinical impact of chromosome aberrations is far less known. Recent work has provided initial evidence for an adverse prognostic impact of some aberrations, such as del(6q), while other studies suggest a possible relationship between some clinical features (e.g. advanced age and/or inflammatory status) and specific cytogenetic abnormalities. To add to the still limited knowledge on WM cytogenetics and its clinical implications, we herein report our experience in a cohort of WM patients across 23 years. Based on our retrospective study, we found that abnormal karyotype was more represented in older patients and maintained a statistically significant independence from other molecular, clinical, and biological features related to WM. The presence and number of cytogenetic aberrations correlated with inferior overall and progression-free survival outcomes regardless of the type of single chromosome aberration. Our data suggests that the role of the altered karyotype deserves to be further clarified especially in elderly WM patients, in whom cytogenetic abnormalities and disease biology appear to be characterized by a higher degree of complexity.
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Affiliation(s)
- Nicolò Danesin
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy
| | - Laura Bonaldi
- Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
| | - Annalisa Martines
- Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
| | - Silvia Nalio
- Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
| | - Roberta Bertorelle
- Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
| | - Sofia Compagno
- Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
| | - Raffaella Marcato
- Immunology and Molecular Oncology Diagnostics, Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
| | - Sabrina Manni
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy
- Veneto Institute of Molecular Medicine, Fondazione Per La Ricerca Biomedica Avanzata, Padua, Italy
| | - Federico Scarmozzino
- Surgical Pathology and Cytopathology Unit, Department of Medicine, University of Padova, Padua, Italy
| | - Marco Pizzi
- Surgical Pathology and Cytopathology Unit, Department of Medicine, University of Padova, Padua, Italy
| | - Angelo Paolo Dei Tos
- Surgical Pathology and Cytopathology Unit, Department of Medicine, University of Padova, Padua, Italy
| | - Alessandro Cellini
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy
| | - Greta Scapinello
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy
| | - Andrea Visentin
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy
| | - Livio Trentin
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy
| | - Francesco Piazza
- Hematology Unit, Department of Medicine, University of Padova, Via Giustiniani 2, 35128, Padua, Italy.
- Veneto Institute of Molecular Medicine, Fondazione Per La Ricerca Biomedica Avanzata, Padua, Italy.
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2
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Kastritis E, Buske C. There's life in the old dog yet: immunochemotherapy in Waldenström's macroglobulinemia. Leukemia 2024:10.1038/s41375-024-02195-w. [PMID: 38454119 DOI: 10.1038/s41375-024-02195-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 03/09/2024]
Affiliation(s)
- Efstathios Kastritis
- Department of Clinical Therapeutics, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece.
| | - Christian Buske
- Institute of Experimental Cancer Research, University Hospital Ulm, Ulm, Germany.
- Department of Internal Medicine III, University Hospital Ulm, Ulm, Germany.
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Østergaard S, Schejbel L, Breinholt MF, Pedersen MØ, Hammer T, Munksgaard L, Nørgaard P, Høgdall E, Gjerdrum LMR, Nielsen TH. Mutational landscape in Waldenström macroglobulinemia evaluated using a next-generation sequencing lymphoma panel in routine clinical practice. Leuk Lymphoma 2024:1-10. [PMID: 38340359 DOI: 10.1080/10428194.2024.2313623] [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: 06/26/2023] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Abstract
Next-generation sequencing (NGS) affords comprehensive insights into the genomic landscape of lymphomas. We examined the mutational pattern in patients with Waldenström macroglobulinemia (WM) or lymphoplasmacytic lymphoma (LPL) as well as the diagnostic and clinical utility of a tailored NGS lymphoma panel. A consecutive series of 45 patients was reviewed and NGS analysis was performed as part of a routine diagnostic setup. The custom designed NGS panel assayed all coding sequences of 59 genes of known clinical significance in lymphoid neoplasms. The most frequently mutated genes were MYD88, CXCR4, BIRC3, CD79B, and ARID1A. Additional somatic mutations were detected in 17 genes with four mutations categorized as pathogenic or likely pathogenic. BIRC3 and TP53 mutations were associated with adverse clinical phenotypes. NGS performance for the MYD88L265P variant was 96% when compared to qPCR. In conclusion, targeted NGS provided important diagnostic and prognostic information in a routine clinical setting.
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Affiliation(s)
- Simon Østergaard
- Department of Pathology, Zealand University Hospital, Roskilde, Denmark
| | - Lone Schejbel
- Department of Pathology, Copenhagen University Hospital, Herlev, Denmark
| | | | - Mette Ølgod Pedersen
- Department of Pathology, Zealand University Hospital, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Troels Hammer
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lars Munksgaard
- Department of Hematology, Zealand University Hospital, Roskilde, Denmark
| | - Peter Nørgaard
- Department of Pathology, Copenhagen University Hospital, Herlev, Denmark
- Department of Pathology, Hvidovre Hospital, Hvidovre, Denmark
| | - Estrid Høgdall
- Department of Pathology, Copenhagen University Hospital, Herlev, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Lise Mette Rahbek Gjerdrum
- Department of Pathology, Zealand University Hospital, Roskilde, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Torsten Holm Nielsen
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Hematology, Zealand University Hospital, Roskilde, Denmark
- Danish Medicines Agency, Copenhagen, Denmark
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4
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Yi S, Cai Z, Hu Y, He A, Gao S, Li Q, Sha L, Zhang N, Ren Y, Gai X, Yang X, Qin R, Qiu L. Ibrutinib Efficacy, Safety, and Pharmacokinetics in Chinese Patients with Relapsed or Refractory Waldenström's Macroglobulinemia: A Multicenter, Single-Arm, Phase 4 Study. Adv Ther 2024; 41:672-685. [PMID: 38079089 PMCID: PMC10838836 DOI: 10.1007/s12325-023-02720-w] [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: 08/08/2023] [Accepted: 10/26/2023] [Indexed: 02/06/2024]
Abstract
INTRODUCTION Waldenström's macroglobulinemia (WM) is a rare malignant B cell lymphoma which occurs in around 1-2% of all hematologic tumors. Ibrutinib was approved in China for WM on the basis of two global pivotal studies which enrolled no Chinese patients. The aim of this study was to determine the efficacy, safety, and pharmacokinetics of ibrutinib in Chinese patients with relapsed or refractory (r/r) WM. METHODS This was an open-label, single-arm, multicenter phase 4 study conducted across five sites in China. Enrolled patients with clinicopathological confirmed WM received ibrutinib 420 mg once daily orally until disease progression or unacceptable toxicity. The primary endpoint was major response rate (MRR, partial response [PR], or better) according to the modified consensus criteria from the Sixth International Workshop on WM. RESULTS Seventeen patients were enrolled; at data cutoff (March 19, 2022), MRR was 64.7% (90% confidence interval [CI] 42.0-83.4) and overall response rate was 100% (90% CI 83.8-100.0). One (5.9%) patient achieved very good PR, 10 (58.8%) achieved PR, and six (35.3%) achieved minor response. The median duration of response (PR or better) was 14.8 months (95% CI 10.8-not estimable [NE]). Median progression-free survival was 18.4 months (95% CI 12.9-NE). All patients experienced at least one treatment-emergent adverse event (TEAE) related to the study drug, and grade ≥ 3 TEAEs were reported in 13 (76.5%) patients. There were no TEAEs leading to dose reduction or death. The median model estimated maximum plasma concentration and area under the plasma concentration-time curve during 24 h after dosing at steady state were 40.5 ng/mL and 204 ng·h/mL, respectively. CONCLUSIONS Ibrutinib demonstrated durable responses in Chinese patients with r/r WM. Treatment was well tolerated with no new safety signals compared with the pivotal global studies. Ibrutinib exposure was also comparable between Chinese and non-Chinese patients. TRIAL REGISTRATION ClinicalTrials.gov identifier NCT04042376.
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Affiliation(s)
- Shuhua Yi
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
- Tianjin Institutes of Health Science, Tianjin, China
| | - Zhen Cai
- Bone Marrow Transplantation Center, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yu Hu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Aili He
- Department of Hematology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Sujun Gao
- Department of Hematology, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Qian Li
- Janssen China Research & Development, Beijing, China
| | - Linlin Sha
- Janssen China Research & Development, Shanghai, China
| | - Nating Zhang
- Janssen China Research & Development, Shanghai, China
| | - Yupeng Ren
- Janssen China Research & Development, Shanghai, China
| | - Xue Gai
- Janssen China Research & Development, Beijing, China
| | - Xue Yang
- Janssen China Research & Development, Shanghai, China
| | - Rui Qin
- Janssen Research & Development, Raritan, NJ, USA
| | - Lugui Qiu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China.
- Tianjin Institutes of Health Science, Tianjin, China.
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5
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Fend F, van den Brand M, Groenen PJ, Quintanilla-Martinez L, Bagg A. Diagnostic and prognostic molecular pathology of lymphoid malignancies. Virchows Arch 2024; 484:195-214. [PMID: 37747559 PMCID: PMC10948535 DOI: 10.1007/s00428-023-03644-0] [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: 08/03/2023] [Revised: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 09/26/2023]
Abstract
With the explosion in knowledge about the molecular landscape of lymphoid malignancies and the increasing availability of high throughput techniques, molecular diagnostics in hematopathology has moved from isolated marker studies to a more comprehensive approach, integrating results of multiple genes analyzed with a variety of techniques on the DNA and RNA level. Although diagnosis of lymphoma still relies on the careful integration of clinical, morphological, phenotypic, and, if necessary molecular features, and only few entities are defined strictly by genetic features, genetic profiling has contributed profoundly to our current understanding of lymphomas and shaped the two current lymphoma classifications, the International Consensus Classification and the fifth edition of the WHO classification of lymphoid malignancies. In this review, the current state of the art of molecular diagnostics in lymphoproliferations is summarized, including clonality analysis, mutational studies, and gene expression profiling, with a focus on practical applications for diagnosis and prognostication. With consideration for differences in accessibility of high throughput techniques and cost limitations, we tried to distinguish between diagnostically relevant and in part disease-defining molecular features and optional, more extensive genetic profiling, which is usually restricted to clinical studies, patients with relapsed or refractory disease or specific therapeutic decisions. Although molecular diagnostics in lymphomas currently is primarily done for diagnosis and subclassification, prognostic stratification and predictive markers will gain importance in the near future.
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Affiliation(s)
- Falko Fend
- Institute of Pathology and Neuropathology and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany.
| | - Michiel van den Brand
- Pathology-DNA, Location Rijnstate Hospital, Arnhem, the Netherlands
- Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Patricia Jta Groenen
- Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology and Comprehensive Cancer Center, University Hospital Tübingen, Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) 'Image Guided and Functionally Instructed Tumor Therapies', Eberhard Karls University Tübingen, Tübingen, Germany
| | - Adam Bagg
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
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Pérez-Escurza O, Flores-Montero J, Óskarsson JÞ, Sanoja-Flores L, Del Pozo J, Lecrevisse Q, Martín S, Reed ER, Hákonardóttir GK, Harding S, Þorsteinsdóttir S, Rögnvaldsson S, Love TJ, Durie B, Kristinsson SY, Orfao A. Immunophenotypic assessment of clonal plasma cells and B-cells in bone marrow and blood in the diagnostic classification of early stage monoclonal gammopathies: an iSTOPMM study. Blood Cancer J 2023; 13:182. [PMID: 38072838 PMCID: PMC10711003 DOI: 10.1038/s41408-023-00944-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/26/2023] [Accepted: 11/03/2023] [Indexed: 12/18/2023] Open
Abstract
Monoclonal gammopathy of undetermined significance (MGUS) is the earliest discernible stage of multiple myeloma (MM) and Waldenström's macroglobulinemia (WM). Early diagnosis of MG may be compromised by the low-level infiltration, undetectable to low-sensitive methodologies. Here, we investigated the prevalence and immunophenotypic profile of clonal (c) plasma cells (PC) and/or cB-lymphocytes in bone marrow (BM) and blood of subjects with a serum M-component from the iSTOPMM program, using high-sensitive next-generation flow cytometry (NGF), and its utility in the diagnostic classification of early-stage MG. We studied 164 paired BM and blood samples from 82 subjects, focusing the analysis on: 55 MGUS, 12 smoldering MM (SMM) and 8 smoldering WM (SWM). cPC were detected in 84% of the BM samples and cB-lymphocytes in 45%, coexisting in 39% of cases. In 29% of patients, the phenotypic features of cPC and/or cB-lymphocytes allowed a more accurate disease classification, including: 19/55 (35%) MGUS, 1/12 (8%) SMM and 2/8 (25%) SWM. Blood samples were informative in 49% of the BM-positive cases. We demonstrated the utility of NGF for a more accurate diagnostic classification of early-stage MG.
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Affiliation(s)
- Oihane Pérez-Escurza
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca); Cytometry Service, NUCLEUS; Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
| | - Juan Flores-Montero
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca); Cytometry Service, NUCLEUS; Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
- Department of Hematology, University Hospital of Salamanca, Salamanca, Spain
| | | | - Luzalba Sanoja-Flores
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
- Institute of Biomedicine of Seville, Department of Hematology, University Hospital Virgen del Rocío of the Consejo Superior de Investigaciones Científicas (CSIC), University of Seville, Seville, Spain
| | - Julio Del Pozo
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca); Cytometry Service, NUCLEUS; Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
| | - Quentin Lecrevisse
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca); Cytometry Service, NUCLEUS; Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Silvia Martín
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca); Cytometry Service, NUCLEUS; Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
| | - Elín Ruth Reed
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
| | | | | | - Sigrún Þorsteinsdóttir
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Rigshospitalet, Copenhagen, Denmark
| | - Sæmundur Rögnvaldsson
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Department of Science, Landspitali University Hospital, Reykjavík, Iceland
| | - Thorvardur Jon Love
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Department of Science, Landspitali University Hospital, Reykjavík, Iceland
| | - Brian Durie
- Department of Hematology and Oncology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Sigurður Yngvi Kristinsson
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Department of Science, Landspitali University Hospital, Reykjavík, Iceland
| | - Alberto Orfao
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca); Cytometry Service, NUCLEUS; Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain.
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain.
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain.
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain.
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Pan B, Zhu X, Xie Q. The performance and applied value of 18F-FDG PET/CT imaging in Waldenstrom macroglobulinemia. AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING 2023; 13:217-224. [PMID: 38023819 PMCID: PMC10656628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/10/2023] [Indexed: 12/01/2023]
Abstract
Waldenstrom macroglobulinemia (WM) is a rare inert B lymphocyte lymphoma and the role of FDG PET/CT imaging in WM has not been well established. This study aimed to evaluate the metabolic status of WM by 18F-FDG PET/CT imaging. We retrospectively analyzed 20 patients who underwent pretherapy 18F-FDG PET-CT scan. All patients were diagnosed by bone marrow aspiration, laboratory examination and clinical symptoms. Bone marrow involvement was identified with 18F-FDG PET/CT imaging in 16 of 20, and the mean SUVmax of bone marrow was 4.06±0.85, Lymph nodes were involved in 8 of 20 patients, and the mean SUVmax of Lymph nodes was 4.07±1.27. Liver and spleen were involved in one case respectively, with SUVmax being 3.6 and 3.3. 1 case of extramedullary infiltration and 1 case of lymphomatous transformation. 18F-FDG PET/CT imaging not only could reveal the metabolic status of lymph nodes, liver, spleen and bone marrow in WM patients, but also evaluate the status of tumor burden which helps to formulate personalized treatment plans.
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Affiliation(s)
- Bo Pan
- Department of Nuclear Medicine, The First Affiliated Hospital of USTCHefei 230001, Anhui, China
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8
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García-Sanz R, García-Álvarez M, Medina A, Askari E, González-Calle V, Casanova M, de la Torre-Loizaga I, Escalante-Barrigón F, Bastos-Boente M, Bárez A, Vidaña-Bedera N, Alonso JM, Sarasquete ME, González M, Chillón MC, Alcoceba M, Jiménez C. Clonal architecture and evolutionary history of Waldenström's macroglobulinemia at the single-cell level. Dis Model Mech 2023; 16:dmm050227. [PMID: 37493341 PMCID: PMC10461465 DOI: 10.1242/dmm.050227] [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: 04/04/2023] [Accepted: 07/19/2023] [Indexed: 07/27/2023] Open
Abstract
To provide insight into the subclonal architecture and co-dependency patterns of the alterations in Waldenström's macroglobulinemia (WM), we performed single-cell mutational and protein profiling of eight patients. A custom panel was designed to screen for mutations and copy number alterations at the single-cell level in samples taken from patients at diagnosis (n=5) or at disease progression (n=3). Results showed that in asymptomatic WM at diagnosis, MYD88L265P was the predominant clonal alteration; other events, if present, were secondary and subclonal to MYD88L265P. In symptomatic WM, clonal diversity was more evident, uncovering combinations of alterations that synergized to promote clonal expansion and dominance. At disease progression, a dominant clone was observed, sometimes accompanied by other less complex minor clones, which could be consistent with a clonal selection process. Clonal diversity was also reduced, probably due to the effect of treatment. Finally, we combined protein expression with mutational analysis to map somatic genotype with the immunophenotype. Our findings provide a comprehensive view of the clonality of tumor populations in WM and how clonal complexity can evolve and impact disease progression.
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Affiliation(s)
- Ramón García-Sanz
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - María García-Álvarez
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - Alejandro Medina
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - Elham Askari
- Hematology Department, Fundación Jiménez Díaz, Centro de Investigación Biomédica en Red-Cáncer, Madrid 28040, Spain
| | - Verónica González-Calle
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - María Casanova
- Hematology Department, Hospital Costa del Sol, Marbella 29603, Spain
| | - Igor de la Torre-Loizaga
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | | | - Miguel Bastos-Boente
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - Abelardo Bárez
- Hematology Department, Complejo Asistencial de Ávila, Ávila 05071, Spain
| | - Nerea Vidaña-Bedera
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - José María Alonso
- Hematology Department, Complejo Asistencial Universitario de Palencia, Palencia 34005, Spain
| | - María Eugenia Sarasquete
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - Marcos González
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - María Carmen Chillón
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - Miguel Alcoceba
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
| | - Cristina Jiménez
- Hematology Department, University Hospital of Salamanca (HUS/IBSAL), CIBERONC and Cancer Research Institute of Salamanca-IBMCC (USAL-CSIC), Salamanca 37007, Spain
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9
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Markou AN, Bagratuni T, Tsakiri C, Tserpeli V, Skourti S, Mavrianou Koutsoukou N, Papadimou A, Terpos E, Kastritis E, Lianidou E, Dimopoulos MA. Highly Sensitive Detection Method of CXCR4 Tumor Hotspot Mutations by Drop-Off Droplet Digital PCR in Patients with IgM Monoclonal Gammopathies. J Mol Diagn 2023; 25:502-512. [PMID: 37088135 DOI: 10.1016/j.jmoldx.2023.03.010] [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: 01/30/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/25/2023] Open
Abstract
CXCR4 mutations impact disease presentation and treatment outcomes in Waldenström macroglobulinemia. Current techniques used for CXCR4 mutation detection have a number of limitations. The aim of the present study was to develop and analytically validate a novel droplet digital PCR (ddPCR) assay for the simultaneous detection of five of the most common CXCR4 mutations in bone marrow (BM). In silico novel primers and probes designed for simultaneous detection of five hotspot mutations of CXCR4 were first performed. Experimental conditions were optimized, and the assay was analytically validated. The developed assay was further applied in 95 BM samples from patients with IgM gammopathy, 7 BM samples from patients with non-IgM gammopathy and 12 PBMCs from healthy donors, whereas a direct comparison study of Sanger sequencing and allele-specific PCR was performed by using 95 and 39 identical patient tumor DNA samples, respectively. The drop-off ddPCR assay is a robust, cost-effective, highly sensitive, and highly specific screening tool for CXCR4 mutations. Of 95 patients with IgM gammopathy samples, 27 had at least one CXCR4 mutation in their BM samples. With Sanger sequencing, 12 of the 95 samples tested positive, whereas the direct comparison of the developed assay with allele-specific PCR revealed substantial agreement. The clinical performance of the developed assay will be prospectively evaluated in a large number of patients, and the applicability of this assay will be further evaluated.
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Affiliation(s)
- Athina N Markou
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece.
| | - Tina Bagratuni
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Christina Tsakiri
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Victoria Tserpeli
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Stamatia Skourti
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Nefeli Mavrianou Koutsoukou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandra Papadimou
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Terpos
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Efstathios Kastritis
- Department of Clinical Therapeutics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Evi Lianidou
- Analysis of Circulating Tumor Cells Laboratory, Laboratory of Analytical Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece
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10
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García-Sanz R, Tedeschi A. The Management of Relapsed or Refractory Waldenström's Macroglobulinemia. Hematol Oncol Clin North Am 2023:S0889-8588(23)00040-0. [PMID: 37246089 DOI: 10.1016/j.hoc.2023.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Waldenström's macroglobulinemia (WM) is an immunoglobulin M monoclonal gammopathy produced by a bone marrow lymphoplasmacytic lymphoma, an indolent non-Hodgkin lymphoma in which the cure is still an unmet challenge. Combinations with alkylating agents, purine analogs, and monoclonal antibodies, Bruton tyrosine kinase, and proteasome inhibitors are used for the treatment of relapsed and refractory patients. Moreover, new additional agents can be seen on the horizon as potential effective therapies. No consensus on a preferred treatment in the relapsed setting is available yet.
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Affiliation(s)
- Ramón García-Sanz
- Department of Hematology, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Accelerator Project, Centro de Investigación Biomédica en Red-Cáncer (CIBERONC) CB16/12/00369 and Center for Cancer Research-IBMCC (USAL-CSIC), Paseo de San Vicente, 58-182, Salamanca 37007, Spain; Department of Hematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy.
| | - Alessandra Tedeschi
- Department of Hematology, University Hospital of Salamanca, Research Biomedical Institute of Salamanca (IBSAL), Accelerator Project, Centro de Investigación Biomédica en Red-Cáncer (CIBERONC) CB16/12/00369 and Center for Cancer Research-IBMCC (USAL-CSIC), Paseo de San Vicente, 58-182, Salamanca 37007, Spain; Department of Hematology, Niguarda Cancer Center, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy
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