Ryan J. Stubbins , Hannah Cherniawsky , Aly Karsan
{"title":"Cellular and immunotherapies for myelodysplastic syndromes","authors":"Ryan J. Stubbins , Hannah Cherniawsky , Aly Karsan","doi":"10.1053/j.seminhematol.2024.09.006","DOIUrl":"10.1053/j.seminhematol.2024.09.006","url":null,"abstract":"<div><div>In this review article, we outline the current landscape of immune and cell therapy-based approaches for patients with myelodysplastic syndromes (MDS). Given the well characterized graft-versus-leukemia (GVL) effect observed with allogeneic hematopoietic cell transplantation, and the known immune escape mechanisms observed in MDS cells, significant interest exists in developing immune-based approaches to treat MDS. These attempts have included antibody-based drugs that block immune escape molecules, such as inhibitors of the PD-1/PD-L1 and TIM-3/galectin-9 axes that mediate interactions between MDS cells and T-lymphocytes, as well as antibodies that block the CD47/SIRPα interaction, which mediates macrophage phagocytosis. Unfortunately, these approaches have been largely unsuccessful. There is significant potential for T-cell engaging therapies and chimeric antigen receptor T (CAR-T) cells, but there are also several limitations to these approaches that are unique to MDS. However, many of these limitations may be overcome by the next generation of cellular therapies, including those with engineered T-cell receptors or natural killer (NK)-cell based platforms. Regardless of the approach, all these immune cells are subject to the complex bone marrow microenvironment in MDS, which harbours a variable and heterogeneous mix of pro-inflammatory cytokines and immunosuppressive elements. Understanding this interaction will be paramount to ensuring the success of immune and cellular therapies in MDS.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 6","pages":"Pages 397-408"},"PeriodicalIF":5.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142473899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sweta B. Patel , Daniel R. Moskop , Craig T. Jordan, Eric M. Pietras
{"title":"Understanding MDS stem cells: Advances and limitations","authors":"Sweta B. Patel , Daniel R. Moskop , Craig T. Jordan, Eric M. Pietras","doi":"10.1053/j.seminhematol.2024.09.007","DOIUrl":"10.1053/j.seminhematol.2024.09.007","url":null,"abstract":"<div><div>In work spanning several decades, extensive studies have focused on the properties of malignant stem cells that drive the pathogenesis of acute myeloid leukemia (AML). However, relatively little attention has been devoted to several serious myeloid malignancies that occur prior to the onset of frank leukemia, including myelodysplastic syndrome (MDS). Like leukemia, MDS is hypothesized to arise from a pool of immature malignant stem and progenitor cells (MDS-SCs) that serve as a reservoir for disease evolution and progression<sup>1</sup>. While multiple studies have sought to identify and characterize the biology and vulnerabilities of MDS-SCs, yet translation of scientific concepts to therapeutically impactful regimens has been limited. Here, we evaluate the currently known properties of MDS-SCs as well as the post-transcriptional mechanisms that drive MDS pathogenesis at a stem and progenitor level. We highlight limits and gaps in our characterization and understanding of MDS-SCs and address the extent to which the properties of MDS-SC are (and can be) inferred from the characterization of LSCs.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 6","pages":"Pages 409-419"},"PeriodicalIF":5.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Implications for metabolic disturbances in myelodysplastic syndromes","authors":"Kathy L. McGraw , Daniel R. Larson","doi":"10.1053/j.seminhematol.2024.11.004","DOIUrl":"10.1053/j.seminhematol.2024.11.004","url":null,"abstract":"<div><div>The Myelodysplastic Syndromes (MDS) are heterogeneous stem cell malignancies clinically characterized by bone marrow dysplasia, peripheral blood cytopenias, and a high risk for transformation to acute myeloid leukemia. In early stages of disease, differentiation defects and maturation blocks result in deficient hematopoiesis. In higher risk disease, unrestricted proliferation of immature blast cells leads to leukemogenesis. Disease pathogenesis can be attributed to many factors including chronic inflammation that is driven in part by commonly found somatic gene mutations (SGM) fostering expansion of malignant clones while suppressing normal hematopoiesis. Cellular metabolism that both directly and indirectly regulates hematopoietic stem cell (HSC) fate, is intimately connected to the immune system, is altered by MDS somatic gene mutations and is likely is a major contributor to disease pathophysiology. Despite this likely role in pathobiology, there is an underwhelming depth of literature on the subject and the precise metabolic dysregulations in these myeloid malignancies have yet to be fully delineated. In this review, we will provide a general overview of several major metabolic processes and how each directs HSC fate, provide a summary of metabolic studies in MDS, discuss how common SGM and inflammation influence metabolic pathways to drive bone marrow failure, and end with a discussion of standards of care and how these should be carefully considered in the context of metabolic dysregulation.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 6","pages":"Pages 470-478"},"PeriodicalIF":5.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142740416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tito Mendoza , Amanda L. King , Elizabeth Vera , Alain Mina , Kathy McGraw , Steven Pavletic , Terri S. Armstrong
{"title":"Patient-reported outcomes in early phase trials for patients with myelodysplastic syndromes","authors":"Tito Mendoza , Amanda L. King , Elizabeth Vera , Alain Mina , Kathy McGraw , Steven Pavletic , Terri S. Armstrong","doi":"10.1053/j.seminhematol.2024.10.010","DOIUrl":"10.1053/j.seminhematol.2024.10.010","url":null,"abstract":"<div><div>Patients with myelodysplastic syndromes (MDS) or acute myeloid leukemia (AML) experience a wide range of symptoms due both to their underlying disease and the effects of treatment. Designing early phase trials to explore effective therapies in these patients should not only examine anti-tumor activity, but also consider the effects of treatments on how patients feel and function. Assessing symptomatic toxicities associated with new therapies in early phase trials from the patient perspective is best measured using patient-reported outcomes (PROs) and offers valuable insight and complementary information to the traditional adverse event reporting in cancer clinical trials. This review describes PROs, highlights their importance in MDS drug development, and outlines the key psychometric properties and practical considerations that make PROs essential and desirable in evaluating the impact of new therapies. We will provide a general overview of PROs and follow with application of PROs in MDS/AML including strategies to be considered in early phase trials. Finally, we describe the creation of the Office of Patient-Centered Outcomes Research at the US National Institutes of Health which has developed a standardized PROs methodology for early phase trials conducted in the Center for Cancer Research at the US National Cancer Institute.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 6","pages":"Pages 457-464"},"PeriodicalIF":5.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142627558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"RNA splicing as a therapeutic target in myelodysplastic syndromes","authors":"Chun-Chih Tseng, Esther A. Obeng","doi":"10.1053/j.seminhematol.2024.10.005","DOIUrl":"10.1053/j.seminhematol.2024.10.005","url":null,"abstract":"<div><div>Myelodysplastic syndromes (MDS) represent a heterogeneous group of hematological disorders and are more commonly found in people over the age of 60. MDS patients exhibit peripheral blood cytopenias and carry an increased risk of disease progression to acute myeloid leukemia (AML). Splicing factor mutations (including genes <em>SF3B1, SRSF2, U2AF1,</em> and <em>ZRSR2</em>) are early events identified in more than 50% of MDS cases. These mutations cause aberrant pre-mRNA splicing and impact MDS pathophysiology. Emerging evidence shows that splicing factor-mutant cells are more sensitive to perturbations targeting the spliceosome, aberrantly spliced genes and/or their regulated molecular pathways. This review summarizes current therapeutic strategies and ongoing efforts targeting splicing factor mutations for the treatment of MDS.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 6","pages":"Pages 431-441"},"PeriodicalIF":5.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142627560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Therapy-related myelodysplastic syndromes and acute myeloid leukemia","authors":"Sangeetha Venugopal , Amy E. DeZern","doi":"10.1053/j.seminhematol.2024.09.004","DOIUrl":"10.1053/j.seminhematol.2024.09.004","url":null,"abstract":"<div><div>Progress always comes at a price: the field of oncology has seen unprecedented progress in treatment options recently for many solid and hematologic cancers. Unfortunately, these long-term survivors of prior cancer and cytotoxic therapy exposure are at higher risk of therapy-related myelodysplastic syndromes/acute myeloid leukemia (t-MDS/AML.) T-MDS/AML is a myeloid malignancy which occur after exposure to chemotherapy or radiation therapy for unrelated malignancy. T-MDS/AML is associated with adverse cytogenomic features and poor prognosis. While advances in the field of clonal hematopoiesis and germline variants has unraveled the molecular underpinnings of t-MDS/AML, we have miles to go in terms of t-MDS/AML directed therapy and improvement in outcomes. In this review, we discuss the epidemiology of t-MDS/AML, clinical and biological insights, evolution of t-MDS/AML and available treatment options.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 6","pages":"Pages 379-384"},"PeriodicalIF":5.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142473901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Valeria Visconte, Jaroslaw P Maciejewski, Luca Guarnera
{"title":"The potential promise of machine learning in myelodysplastic syndrome.","authors":"Valeria Visconte, Jaroslaw P Maciejewski, Luca Guarnera","doi":"10.1053/j.seminhematol.2024.11.002","DOIUrl":"https://doi.org/10.1053/j.seminhematol.2024.11.002","url":null,"abstract":"<p><p>The introduction of artificial intelligence (AI), and in particular machine learning (ML), has revolutionized biomedical research at the clinical level, a trend that also includes hematologic malignancies and myeloid neoplasia (MN). ML encompasses a wide range of applications such as enhanced diagnostics, outcome predictions, decision trees and clustering. Despite several reports in recent years and the achievement of promising results, none of the ML-based pipelines have been directly translated into clinical practice. ML offers the potential to help refine risk stratification and increase accuracy to correctly predict clinical outcomes and disease classification. One of the complications in the clinical utilization of ML is that a large percentage of hematologists have limited familiarity with these tools which can cause skepticism. Concerns have also been raised by patients that are worried about privacy issues, reliability of the outcomes, and loss of human interaction. In this review, we aim to pinpoint the main mechanisms and applications of ML, as well as application in MN and Myelodysplastic Syndrome, highlighting strengths and limitations, and addressing the potential promise in clinical implementation of ML-pipelines.</p>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":" ","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142771772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CARs Moving Forward: The Development of CAR T-Cell Therapy in the Earlier Treatment Course of Hematologic Malignancies","authors":"Omar Castaneda Puglianini , Julio C. Chavez","doi":"10.1053/j.seminhematol.2024.08.005","DOIUrl":"10.1053/j.seminhematol.2024.08.005","url":null,"abstract":"<div><div>Chimeric antigen receptor T-cell (CAR-T) has revolutionized the treatment of hematologic malignancies. There are several approvals in lymphomas, leukemias and myeloma. Randomized clinical trials have shown that CAR-T cell therapy improves survival over standard of care in diffuse large B-cell lymphoma (DLBCL) and multiple myeloma (MM), changing dramatically the current treatment paradigm. Current efforts are directed in improving outcomes in the frontline setting and confirmatory randomized trials are ongoing.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 5","pages":"Pages 290-296"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142294510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CAR T-cell therapy comes of age: Introductory editorial for the special issue","authors":"Jennifer N. Brudno MD","doi":"10.1053/j.seminhematol.2024.10.003","DOIUrl":"10.1053/j.seminhematol.2024.10.003","url":null,"abstract":"","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 5","pages":"Pages 271-272"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142438241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Road More or Less Traveled- Examining the Role of Consolidative Allogeneic Hematopoietic Stem Cell Transplantation After Chimeric Antigen Receptor T Cell Therapy in B-cell ALL","authors":"Michelle Choe MD , Corinne Summers MD","doi":"10.1053/j.seminhematol.2024.08.004","DOIUrl":"10.1053/j.seminhematol.2024.08.004","url":null,"abstract":"<div><div>Treatment with CD19-targeted chimeric antigen receptor T cell therapy (CD19-CART) has improved salvage rates in children and adults with relapsed and/or refractory B-cell acute lymphoblastic leukemia (ALL). However, not all patients treated with CD19-CAR T cells achieve long-term remission. The role of allogeneic hematopoietic stem cell transplantation as consolidative therapy remains undefined. We aim to review the current literature published to date regarding prognostic markers indicating durable ALL response to CD19-CART and risk factors for relapse after CD19-CART to identify patient cohorts who may benefit from consolidative hematopoietic stem cell transplantation.</div></div>","PeriodicalId":21684,"journal":{"name":"Seminars in hematology","volume":"61 5","pages":"Pages 314-320"},"PeriodicalIF":5.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142381618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}