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Budczies J, Kazdal D, Menzel M, Beck S, Kluck K, Altbürger C, Schwab C, Allgäuer M, Ahadova A, Kloor M, Schirmacher P, Peters S, Krämer A, Christopoulos P, Stenzinger A. Tumour mutational burden: clinical utility, challenges and emerging improvements. Nat Rev Clin Oncol 2024; 21:725-742. [PMID: 39192001 DOI: 10.1038/s41571-024-00932-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2024] [Indexed: 08/29/2024]
Abstract
Tumour mutational burden (TMB), defined as the total number of somatic non-synonymous mutations present within the cancer genome, varies across and within cancer types. A first wave of retrospective and prospective research identified TMB as a predictive biomarker of response to immune-checkpoint inhibitors and culminated in the disease-agnostic approval of pembrolizumab for patients with TMB-high tumours based on data from the Keynote-158 trial. Although the applicability of outcomes from this trial to all cancer types and the optimal thresholds for TMB are yet to be ascertained, research into TMB is advancing along three principal avenues: enhancement of TMB assessments through rigorous quality control measures within the laboratory process, including the mitigation of confounding factors such as limited panel scope and low tumour purity; refinement of the traditional TMB framework through the incorporation of innovative concepts such as clonal, persistent or HLA-corrected TMB, tumour neoantigen load and mutational signatures; and integration of TMB with established and emerging biomarkers such as PD-L1 expression, microsatellite instability, immune gene expression profiles and the tumour immune contexture. Given its pivotal functions in both the pathogenesis of cancer and the ability of the immune system to recognize tumours, a profound comprehension of the foundational principles and the continued evolution of TMB are of paramount relevance for the field of oncology.
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Affiliation(s)
- Jan Budczies
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany.
- Translational Lung Research Center (TLRC) Heidelberg, Member of the German Center for Lung Research (DZL), Heidelberg, Germany.
- Center for Personalized Medicine (ZPM), Heidelberg, Germany.
| | - Daniel Kazdal
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Translational Lung Research Center (TLRC) Heidelberg, Member of the German Center for Lung Research (DZL), Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Michael Menzel
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Susanne Beck
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Klaus Kluck
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Christian Altbürger
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Constantin Schwab
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Michael Allgäuer
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Aysel Ahadova
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Clinical Cooperation Unit Applied Tumour Biology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Matthias Kloor
- Department of Applied Tumour Biology, Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Clinical Cooperation Unit Applied Tumour Biology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Peter Schirmacher
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany
- Center for Personalized Medicine (ZPM), Heidelberg, Germany
| | - Solange Peters
- Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne University, Lausanne, Switzerland
| | - Alwin Krämer
- Clinical Cooperation Unit Molecular Hematology/Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
| | - Petros Christopoulos
- Translational Lung Research Center (TLRC) Heidelberg, Member of the German Center for Lung Research (DZL), Heidelberg, Germany
- Department of Thoracic Oncology, Thoraxklinik and National Center for Tumour Diseases at Heidelberg University Hospital, Heidelberg, Germany
| | - Albrecht Stenzinger
- Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany.
- Translational Lung Research Center (TLRC) Heidelberg, Member of the German Center for Lung Research (DZL), Heidelberg, Germany.
- Center for Personalized Medicine (ZPM), Heidelberg, Germany.
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Gu Y, Xu M, Wu W, Ma Z, Liu W. Identification of N6-Methyladenosine-Associated lncRNAs and Analysis of Prognostic Signature in Breast Cancer. Biochem Genet 2024:10.1007/s10528-024-10889-0. [PMID: 39042347 DOI: 10.1007/s10528-024-10889-0] [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: 05/06/2024] [Accepted: 07/16/2024] [Indexed: 07/24/2024]
Abstract
Breast cancer represents the predominant malignant neoplasm in women, posing significant threats to both life and health. N6-methyladenosine (m6A) methylation, the most prevalent RNA modification, plays a crucial role in cancer development. This study aims to delineate the prognostic implications of m6A-associated long non-coding RNAs (m6AlncRNAs) and identify potential m6AlncRNA candidates as novel therapeutic targets for breast cancer. Through univariate Cox, Least Absolute Shrinkage and Selection Operator and multiple Cox regression analysis, m6AlncRNA was analyzed and a risk-prognosis model was constructed. Kaplan-Meier analysis, principal component analysis and nomogram were used to evaluate the risk model. Finally, we screened candidate lncRNAs and validated them in breast cancer cell lines. m6AlncRNAs were stratified into three subtypes, and their associations with survival outcomes and immune infiltrating capacities were systematically analyzed. Subsequently, breast cancer patients were stratified into high and low-risk groups based on median risk scores, revealing distinct clinical characteristics, tumor immunoinvasive profiles, tumor mutation burden, and survival probabilities. Additionally, a prognostic model was established, highlighting three promising candidate lncRNAs: ECE1-AS1, NDUFA6-DT, and COL4A2-AS1. This study investigated the prognostic implications of m6A-associated long non-coding RNAs (m6AlncRNAs) and developed a prognostic risk model to identify three potential m6AlncRNA candidates. These findings provide valuable insights into the potential application of these m6AlncRNAs in guiding immunotherapeutic strategies for breast cancer.
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Affiliation(s)
- Yun Gu
- Department of Pathology, Nanjing Women and Children's Healthcare Hospital, Women's Hospital of Nanjing Medical University, Tianfei Road 123th, Nanjing, 210004, Jiangsu, China
| | - Min Xu
- Department of Pathology, Nanjing Women and Children's Healthcare Hospital, Women's Hospital of Nanjing Medical University, Tianfei Road 123th, Nanjing, 210004, Jiangsu, China
| | - Wangfei Wu
- Department of Pathology, Nanjing Women and Children's Healthcare Hospital, Women's Hospital of Nanjing Medical University, Tianfei Road 123th, Nanjing, 210004, Jiangsu, China
| | - Zhifang Ma
- Department of Pathology, Nanjing Women and Children's Healthcare Hospital, Women's Hospital of Nanjing Medical University, Tianfei Road 123th, Nanjing, 210004, Jiangsu, China.
| | - Weiguang Liu
- Department of Molecular and Cellular Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX, 77030, USA.
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Xu Y, Shao B, Zhang Y. The significance of targeting lysosomes in cancer immunotherapy. Front Immunol 2024; 15:1308070. [PMID: 38370407 PMCID: PMC10869645 DOI: 10.3389/fimmu.2024.1308070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/22/2024] [Indexed: 02/20/2024] Open
Abstract
Lysosomes are intracellular digestive organelles that participate in various physiological and pathological processes, including the regulation of immune checkpoint molecules, immune cell function in the tumor microenvironment, antigen presentation, metabolism, and autophagy. Abnormalities or dysfunction of lysosomes are associated with the occurrence, development, and drug resistance of tumors. Lysosomes play a crucial role and have potential applications in tumor immunotherapy. Targeting lysosomes or harnessing their properties is an effective strategy for tumor immunotherapy. However, the mechanisms and approaches related to lysosomes in tumor immunotherapy are not fully understood at present, and further basic and clinical research is needed to provide better treatment options for cancer patients. This review focuses on the research progress related to lysosomes and tumor immunotherapy in these.
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Affiliation(s)
- Yanxin Xu
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Henan, Zhengzhou, China
| | - Bo Shao
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Henan, Zhengzhou, China
| | - Yafeng Zhang
- Department of Colorectal Surgery, The First Affiliated Hospital of Zhengzhou University, Henan, Zhengzhou, China
- Institute for Hospital Management of Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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