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Harbeck N, Ciruelos E, Jerusalem G, Müller V, Niikura N, Viale G, Bartsch R, Kurzeder C, Higgins MJ, Connolly RM, Baron-Hay S, Gión M, Guarneri V, Bianchini G, Wildiers H, Escrivá-de-Romaní S, Prahladan M, Bridge H, Kuptsova-Clarkson N, Scotto N, Verma S, Lin NU. Trastuzumab deruxtecan in HER2-positive advanced breast cancer with or without brain metastases: a phase 3b/4 trial. Nat Med 2024:10.1038/s41591-024-03261-7. [PMID: 39271844 DOI: 10.1038/s41591-024-03261-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Accepted: 08/22/2024] [Indexed: 09/15/2024]
Abstract
Trastuzumab deruxtecan (T-DXd) intracranial activity has been observed in small or retrospective patient cohorts with human epidermal growth factor receptor 2-positive (HER2+) advanced/metastatic breast cancer (mBC) and stable or active (untreated/previously treated and progressing) brain metastases (BMs). The phase 3b/4 DESTINY-Breast12 study investigated T-DXd in patients with HER2+ mBC and is, to our knowledge, the largest prospective study of T-DXd in patients with BMs in this setting. Patients (stable/active BMs (n = 263) and no BMs (n = 241)) treated with one or more prior anti-HER2-based regimens received T-DXd (5.4 mg per kg). Primary endpoints were progression-free survival (PFS; BMs cohort) and objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors version 1.1 (non-BMs cohort). Additional endpoints included central nervous system (CNS) PFS, ORR, time to second progression, CNS ORR (BMs cohort), incidence of new symptomatic CNS metastases (non-BMs cohort), time to progression, duration of response, overall survival and safety (both cohorts). No formal hypothesis testing was conducted for this single-arm, open-label study. In the BMs cohort, 12-month PFS was 61.6% (95% confidence interval (CI): 54.9-67.6), and 12-month CNS PFS was 58.9% (95% CI: 51.9-65.3). In the non-BMs cohort, ORR was 62.7% (95% CI: 56.5-68.8). Grade 3 or higher adverse events occurred in 51% (BMs cohort) and 49% (non-BMs cohort) of patients. Investigator-reported interstitial lung disease/pneumonitis occurred in 16% (grade ≥3: 3%) of patients with BMs and 13% (grade ≥3: 1%) of patients without BMs. These data show substantial and durable overall and intracranial activity for T-DXd, supporting its use in previously treated patients with HER2+ mBC irrespective of stable/active baseline BMs. ClinicalTrials.gov identifier: NCT04739761 .
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Affiliation(s)
- Nadia Harbeck
- Breast Center, Department of Gynecology and Obstetrics, Comprehensive Cancer Center Munich, LMU University Hospital, Munich, Germany.
| | - Eva Ciruelos
- Hospital Universitario 12 de Octubre, Madrid, Spain
| | | | - Volkmar Müller
- University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Naoki Niikura
- Tokai University School of Medicine, Kanagawa, Japan
| | - Giuseppe Viale
- Department of Pathology and Laboratory Medicine, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Rupert Bartsch
- Division of Oncology, Department of Medicine 1, Medical University of Vienna, Vienna, Austria
| | | | - Michaela J Higgins
- St. Vincent's University Hospital, UCD Cancer Trials Cluster, Dublin, Ireland
| | - Roisin M Connolly
- Cancer Research @UCC, College of Medicine and Health, University College Cork, Cork, Ireland
- Cancer Trials Cork, CUH/UCC Cancer Center, Cork University Hospital, Cork, Ireland
| | - Sally Baron-Hay
- Department of Medical Oncology, Royal North Shore Hospital, St. Leonards, NSW, Australia
| | - María Gión
- IOB-Madrid, Beata María Ana Hospital, Madrid, Spain
- Department of Medical Oncology, Ramón y Cajal University Hospital, Madrid, Spain
| | - Valentina Guarneri
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
- Medical Oncology 2, Istituto Oncologico Veneto IRCCS, Padova, Italy
| | - Giampaolo Bianchini
- Department of Medical Oncology, IRCCS Ospedale San Raffaele, Milan, Italy
- School of Medicine and Surgery, Vita-Salute San Raffaele University, Milan, Italy
| | - Hans Wildiers
- Department of General Medical Oncology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | | | - Manoj Prahladan
- Global Medical Affairs, Oncology R&D, AstraZeneca, Cambridge, UK
| | - Helen Bridge
- Oncology Global Medical Affairs / Payer Biometrics, AstraZeneca, Macclesfield, UK
| | | | - Nana Scotto
- Oncology Global Medical Affairs, AstraZeneca, Baar, Switzerland
| | - Sunil Verma
- Oncology Franchise, AstraZeneca, Gaithersburg, MD, USA
| | - Nancy U Lin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
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2
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Otoya I, Valdiviezo N, Morante Z, Calle C, Ferreyra Y, Huarcaya-Chombo N, Polo-Mendoza G, Castañeda C, Vidaurre T, Neciosup SP, Calderón MJ, Gomez HL. Subcutaneous Trastuzumab: An Observational Study of Safety and Tolerability in Patients With Early HER2-Positive Breast Cancer. Int J Breast Cancer 2024; 2024:9551710. [PMID: 38962673 PMCID: PMC11222001 DOI: 10.1155/2024/9551710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/15/2024] [Accepted: 05/28/2024] [Indexed: 07/05/2024] Open
Abstract
Purpose: In Peru, breast cancer (BC) stands as the most predominant malignancy neoplasm among women. Trastuzumab has marked a significant milestone in the management of this disease. It has been shown to improve prognosis in human epidermal growth factor receptor 2 (HER2)-expressing female patients, but its repercussions and efficacy are yet to be analyzed in a context with limited resources. Methods: The study population is made of woman patients aged 18 years and older diagnosed with HER2-positive BC at Instituto Nacional de Enfermedades Neoplásicas (INEN, Lima, Peru) during 2019-2021 and treated with at least one dose of subcutaneous trastuzumab. We reviewed medical records to register treatment characteristics, adverse events (AEs), disease progression, and survival status. We considered a median follow-up time of 36 and 45 months for progression and survival status. Results: The majority of patients were over 50 years old (54.29%). Tumor size averaged 19.7 ± 16.1 mm. Lymph nodes were present in 44.78% of patients. Most patients received adjuvant chemotherapy (63.8%) as first-line treatment. Descriptive analyses of treatment outcomes revealed a 30% toxicity rate, primarily attributed to arthralgia (47.62%), followed by diarrhea, fatigue, and injection site reactions, with relatively lower discontinuation rates compared to larger scale studies. Differences in demographic, clinical, and treatment characteristics were not statistically significant concerning the emergence of AEs (p > 0.05). Progression appeared in nine patients, and the overall survival (OS) rate stood at 98.6% and 92.8%, respectively, during a median follow-up of 36 and 45 months. Conclusion: The research suggests that subcutaneous trastuzumab is comparable in effectiveness and safety to the intravenous administration. Regional-specific studies may provide valuable insights into demographic factors influencing treatment outcomes in Peru or other countries. Furthermore, it could represent a more accessible alternative, potentially enhancing patient adherence and optimizing healthcare resource logistics.
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Affiliation(s)
- Iris Otoya
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Natalia Valdiviezo
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Zaida Morante
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Cindy Calle
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Yomali Ferreyra
- Department of BioengineeringUniversidad de Ingeniería y Tecnología, Lima, Peru
| | | | | | - Carlos Castañeda
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Tatiana Vidaurre
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Silvia P. Neciosup
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Mónica J. Calderón
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
- Institute of Investigations in Biomedical Sciences (INICIB)Universidad Ricardo Palma, Lima, Peru
| | - Henry L. Gomez
- Department of Medical OncologyInstituto Nacional de Enfermedades Neoplásicas, Lima, Peru
- Institute of Investigations in Biomedical Sciences (INICIB)Universidad Ricardo Palma, Lima, Peru
- OncosaludAuna Ideas, Lima, Peru
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3
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Hunt AL, Khan I, Wu AML, Makohon-Moore SC, Hood BL, Conrads KA, Abulez T, Ogata J, Mitchell D, Gist G, Oliver J, Wei D, Chung MA, Rahman S, Bateman NW, Zhang W, Conrads TP, Steeg PS. The murine metastatic microenvironment of experimental brain metastases of breast cancer differs by host age in vivo: a proteomic study. Clin Exp Metastasis 2024; 41:229-249. [PMID: 37917186 DOI: 10.1007/s10585-023-10233-7] [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: 05/25/2023] [Accepted: 09/07/2023] [Indexed: 11/04/2023]
Abstract
Breast cancer in young patients is known to exhibit more aggressive biological behavior and is associated with a less favorable prognosis than the same disease in older patients, owing in part to an increased incidence of brain metastases. The mechanistic explanations behind these findings remain poorly understood. We recently reported that young mice, in comparison to older mice, developed significantly greater brain metastases in four mouse models of triple-negative and luminal B breast cancer. Here we have performed a quantitative mass spectrometry-based proteomic analysis to identify proteins potentially contributing to age-related disparities in the development of breast cancer brain metastases. Using a mouse hematogenous model of brain-tropic triple-negative breast cancer (MDA-MB-231BR), we harvested subpopulations of tumor metastases, the tumor-adjacent metastatic microenvironment, and uninvolved brain tissues via laser microdissection followed by quantitative proteomic analysis using high resolution mass spectrometry to characterize differentially abundant proteins potentially contributing to age-dependent rates of brain metastasis. Pathway analysis revealed significant alterations in signaling pathways, particularly in the metastatic microenvironment, modulating tumorigenesis, metabolic processes, inflammation, and neuronal signaling. Tenascin C (TNC) was significantly elevated in all laser microdissection (LMD) enriched compartments harvested from young mice relative to older hosts, which was validated and confirmed by immunoblot analysis of whole brain lysates. Additional in vitro studies including migration and wound-healing assays demonstrated TNC as a positive regulator of tumor cell migration. These results provide important new insights regarding microenvironmental factors, including TNC, as mechanisms contributing to the increased brain cancer metastatic phenotype observed in young breast cancer patients.
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Affiliation(s)
- Allison L Hunt
- Women's Health Integrated Research Center, Inova Women's Service Line, Inova Health System, 3289 Woodburn Rd, Annandale, VA, 22042, USA
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
| | - Imran Khan
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Alex M L Wu
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
- Zymeworks Inc, Vancouver, BC, V5T 1G4, Canada
| | - Sasha C Makohon-Moore
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Brian L Hood
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Kelly A Conrads
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Tamara Abulez
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Jonathan Ogata
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Dave Mitchell
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Glenn Gist
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Julie Oliver
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
| | - Debbie Wei
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Monika A Chung
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
- Rutgers New Jersey Medical School, 185 S Orange Ave, Newark, NJ, 07103, USA
| | - Samiur Rahman
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Nicholas W Bateman
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc, 6720A Rockledge Drive, Suite 100, Bethesda, MD, 20817, USA
- Department of Surgery, The John P. Murtha Cancer Center Research Program, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA
| | - Wei Zhang
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA
| | - Thomas P Conrads
- Women's Health Integrated Research Center, Inova Women's Service Line, Inova Health System, 3289 Woodburn Rd, Annandale, VA, 22042, USA.
- Gynecologic Cancer Center of Excellence and the Women's Health Integrated Research Center, Department of Gynecologic Surgery and Obstetrics, Uniformed Services University and Walter Reed National Military Medical Center, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA.
- Department of Surgery, The John P. Murtha Cancer Center Research Program, Uniformed Services University, 8901 Wisconsin Avenue, Bethesda, MD, 20889, USA.
| | - Patricia S Steeg
- Women's Malignancies Branch, Center for Cancer Research, National Cancer Institute, Building 37, Room 1126, Bethesda, MD, 20892, USA.
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Han YM, Ou D, Chai WM, Yang WL, Liu YL, Xiao JF, Zhang W, Qi WX, Chen JY. Exploration of anatomical distribution of brain metastasis from breast cancer at first diagnosis assisted by artificial intelligence. Heliyon 2024; 10:e29350. [PMID: 38694110 PMCID: PMC11061689 DOI: 10.1016/j.heliyon.2024.e29350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 05/03/2024] Open
Abstract
Objectives This study aimed to explore the spatial distribution of brain metastases (BMs) from breast cancer (BC) and to identify the high-risk sub-structures in BMs that are involved at first diagnosis. Methods Magnetic resonance imaging (MRI) scans were retrospectively reviewed at our centre. The brain was divided into eight regions according to its anatomy and function, and the volume of each region was calculated. The identification and volume calculation of metastatic brain lesions were accomplished using an automatically segmented 3D BUC-Net model. The observed and expected rates of BMs were compared using 2-tailed proportional hypothesis testing. Results A total of 250 patients with BC who presented with 1694 BMs were retrospectively identified. The overall observed incidences of the substructures were as follows: cerebellum, 42.1 %; frontal lobe, 20.1 %; occipital lobe, 9.7 %; temporal lobe, 8.0 %; parietal lobe, 13.1 %; thalamus, 4.7 %; brainstem, 0.9 %; and hippocampus, 1.3 %. Compared with the expected rate based on the volume of different brain regions, the cerebellum, occipital lobe, and thalamus were identified as higher risk regions for BMs (P value ≤ 5.6*10-3). Sub-group analysis according to the type of BC indicated that patients with triple-negative BC had a high risk of involvement of the hippocampus and brainstem. Conclusions Among patients with BC, the cerebellum, occipital lobe and thalamus were identified as higher-risk regions than expected for BMs. The brainstem and hippocampus were high-risk areas of the BMs in triple negative breast cancer. However, further validation of this conclusion requires a larger sample size.
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Affiliation(s)
- Yi-min Han
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Dan Ou
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wei-min Chai
- Department of Radiology, RuiJin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wen-lei Yang
- Department of Neurosurgery, RuiJin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ying-long Liu
- United Imaging Research Institute of Innovative Medical Equipment, Shenzhen, China
| | - Ji-feng Xiao
- United Imaging Research Institute of Innovative Medical Equipment, Shenzhen, China
| | - Wei Zhang
- Shanghai United Imaging Healthcare Co., Ltd. Shanghai, China
| | - Wei-xiang Qi
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jia-yi Chen
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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5
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Hügel M, Stöhr J, Kuhnt T, Nägler F, Papsdorf K, Klagges S, Hambsch P, Güresir E, Nicolay NH, Seidel C. Long-term survival in patients with brain metastases-clinical characterization of a rare scenario. Strahlenther Onkol 2024; 200:335-345. [PMID: 37646818 DOI: 10.1007/s00066-023-02123-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 07/10/2023] [Indexed: 09/01/2023]
Abstract
PURPOSE This study aimed to assess clinical, treatment, and prognostic features in patients with brain metastases (BM) from solid tumors achieving long-term survival (LTS). Further, the accuracy of diagnosis-specific Graded Prognostic Assessment scores (ds-GPA) to predict LTS was evaluated. METHODS Patients admitted for radiotherapy of BM between 2010 and 2020 at a large tertiary cancer center with survival of at least 3 years from diagnosis of BM were included. Patient, tumor, treatment characteristics and ds-GPA were compiled retrospectively. RESULTS From a total of 1248 patients with BM, 61 (4.9%) survived ≥ 3 years. In 40 patients, detailed patient charts were available. Among LTS patients, median survival time from diagnosis of BM was 51.5 months. Most frequent primary tumors were lung cancer (45%), melanoma (20%), and breast cancer (17.5%). At the time of diagnosis of BM, 11/40 patients (27.5%) had oligometastatic disease. Estimated mean survival time based on ds-GPA was 19.7 months (in 8 cases estimated survival < 12 months). Resection followed by focal or whole-brain radiotherapy (WBRT) was often applied (60%), followed by primary stereotactic radiotherapy (SRT) (20%) or WBRT (20%). 80% of patients received systemic treatment, appearing particularly active in specifically altered non-small lung cancer (NSCLC), melanoma, and HER2-positive breast cancer. Karnofsky performance score (KPS) and the presence of oligometastatic disease at BM diagnosis were persisting prognostic factors in LTS patients. CONCLUSION In this monocentric setting reflecting daily pattern of care, LTS with BM is heterogeneous and difficult to predict. Effective local treatment and modern systemic therapies often appear crucial for LTS. The impact of concomitant diseases and frailty is not clear.
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Affiliation(s)
- M Hügel
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - J Stöhr
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - T Kuhnt
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - F Nägler
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - K Papsdorf
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - S Klagges
- Clinical Cancer Registry, Leipzig, Germany
| | - P Hambsch
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - E Güresir
- Department of Neurosurgery, University of Leipzig Medical Center, Leipzig, Germany
| | - N H Nicolay
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany
| | - C Seidel
- Department of Radiation Oncology, University of Leipzig Medical Center, Leipzig, Germany.
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6
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Chen S, Zhang G, Liu Y, Yang C, He Y, Guo Q, Du Y, Gao F. Anchoring of hyaluronan glycocalyx to CD44 reduces sensitivity of HER2-positive gastric cancer cells to trastuzumab. FEBS J 2024; 291:1719-1731. [PMID: 38275079 DOI: 10.1111/febs.17069] [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: 05/31/2023] [Revised: 11/28/2023] [Accepted: 01/17/2024] [Indexed: 01/27/2024]
Abstract
Trastuzumab is widely used in human epidermal growth factor receptor 2 (HER2)-positive gastric cancer (GC) therapy, but ubiquitous resistance limits its clinical application. In this study, we first showed that CD44 antigen is a significant predictor of overall survival for patients with HER2-positive GC. Next, we found that CD44 could be co-immunoprecipitated and co-localized with HER2 on the membrane of GC cells. By analyzing the interaction between CD44 and HER2, we identified that CD44 could upregulate HER2 protein by inhibiting its proteasome degradation. Notably, the overexpression of CD44 could decrease the sensitivity of HER2-positive GC cells to trastuzumab. Further mechanistic study showed that CD44 upregulation could induce its ligand, hyaluronan (HA), to deposit on the cancer cell surface, resulting in covering up the binding sites of trastuzumab to HER2. Removing the HA glycocalyx restored sensitivity of the cells to trastuzumab. Collectively, our findings suggested a role for CD44 in regulating trastuzumab sensitivity and provided novel insights into HER2-targeted therapy.
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Affiliation(s)
- Si Chen
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
- Department of Clinical Laboratory, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Guoliang Zhang
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Yiwen Liu
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Cuixia Yang
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
- Department of Clinical Laboratory, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Yiqing He
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Qian Guo
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Yan Du
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
| | - Feng Gao
- Department of Molecular Biology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
- Department of Clinical Laboratory, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, China
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7
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Xu D, Hu Z, Wang K, Hu S, Zhou Y, Zhang S, Chen Y, Pan T. Why does HER2-positive breast cancer metastasize to the brain and what can we do about it? Crit Rev Oncol Hematol 2024; 195:104269. [PMID: 38272149 DOI: 10.1016/j.critrevonc.2024.104269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 12/18/2023] [Accepted: 01/19/2024] [Indexed: 01/27/2024] Open
Abstract
Breast cancer is the most frequent malignancy in women. However, in the middle and late stages, some people develop distant metastases, which considerably lower the quality of life and life expectancy. The brain is one of the sites where metastasis frequently happens. According to epidemiological research, brain metastases occur at a late stage in 30-50% of patients with HER2-positive breast cancer, resulting in a poor prognosis. Additionally, few treatments are available for HER2-positive brain metastatic breast cancer, and the mortality rate is remarkable owing to the complexity of the brain's anatomical structure and physiological function. In this review, we described the stages of the brain metastasis of breast cancer, the relationship between the microenvironment and metastatic cancer cells, and the unique molecular and cellular mechanisms. It involves cancer cells migrating, invading, and adhering to the brain; penetrating the blood-brain barrier; interacting with brain cells; and activating signal pathways once inside the brain. Finally, we reviewed current clinically used treatment approaches for brain metastasis in HER2-positive breast cancer; summarized the traditional treatment, targeted treatment, immunotherapy, and other treatment modalities; compared the benefits and drawbacks of each approach; discussed treatment challenges; and emphasized the importance of identifying potential targets to improve patient survival rates and comprehend brain metastasis in breast cancer.
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Affiliation(s)
- Dongyan Xu
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Zhengfang Hu
- Beijing Tian Tan Hospital, Capital Medical University, Beijing 100050, China
| | - Kaiyue Wang
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Shiyao Hu
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Yunxiang Zhou
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Shizhen Zhang
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Yiding Chen
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China
| | - Tao Pan
- Department of Breast Surgery and Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China; Cancer Institute (Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.
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8
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Yakar M, Etiz D. Prognostic factors of breast cancer brain metastasis. World J Clin Oncol 2024; 15:5-8. [PMID: 38292663 PMCID: PMC10823945 DOI: 10.5306/wjco.v15.i1.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/03/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
In this editorial we comment on the article by Chen et al published in the recent issue of the World Journal of Clinical Oncology. Brain metastasis is one of the most serious complications of breast cancer and causes high morbidity and mortality. Brain metastases may involve the brain parenchyma and/or leptomeninges. Symptomatic brain metastases develop in 10%-16% of newly recognized cases each year, and this rate increases to 30% in autopsy series. Depending on the size of the metastatic foci, it may be accompanied by extensive vasogenic edema or may occur as small tumor foci. Since brain metastases are a significant cause of morbidity and mortality, early diagnosis can have significant effects on survival and quality of life. The risk of developing brain metastases emerges progressively due to various patient and tumor characteristics. Patient variability may be particularly important in the susceptibility and distribution of brain metastases because malignant blood must cross the brain barrier and move within the brain parenchyma. Some characteristics of the tumor, such as gene expression, may increase the risk of brain metastasis. Clinical growth, tumor stage, tumor grade, growth receptor positivity, HER2 positivity, molecular subtype (such as triple negative status, luminal/nonluminal feature) increase the risk of developing breast cancer metastasis. Factors related to survival due to breast cancer brain metastasis include both tumor/patient characteristics and treatment characteristics, such as patient age, lung metastasis, surgery for brain metastasis, and HER2 positivity. If cases with a high risk of developing brain metastasis can be identified with the help of clinical procedures and artificial intelligence, survival and quality of life can be increased with early diagnosis and treatment. At the same time, it is important to predict the formation of this group in order to develop new treatment methods in cases with low survival expectancy with brain metastases.
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Affiliation(s)
- Melek Yakar
- Department of Radiation Oncology, Osmangazi University, Eskişehir 26040, Turkey
| | - Durmuş Etiz
- Department of Radiation Oncology, Eskisehir Osmangazi University Faculty of Medicine, Eskişehir 26040, Turkey
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9
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Zhang C, Zhou F, Zou J, Fang Y, Liu Y, Li L, Hou J, Wang G, Wang H, Lai X, Xie L, Jiang J, Yang C, Huang Y, Chen Y, Zhang H, Li Y. Clinical considerations of CDK4/6 inhibitors in HER2 positive breast cancer. Front Oncol 2024; 13:1322078. [PMID: 38293701 PMCID: PMC10824891 DOI: 10.3389/fonc.2023.1322078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 12/28/2023] [Indexed: 02/01/2024] Open
Abstract
Deregulation of cell cycles can result in a variety of cancers, including breast cancer (BC). In fact, abnormal regulation of cell cycle pathways is often observed in breast cancer, leading to malignant cell proliferation. CDK4/6 inhibitors (CDK4/6i) can block the G1 cell cycle through the cyclin D-cyclin dependent kinase 4/6-inhibitor of CDK4-retinoblastoma (cyclinD-CDK4/6-INK4-RB) pathway, thus blocking the proliferation of invasive cells, showing great therapeutic potential to inhibit the spread of BC. So far, three FDA-approved drugs have been shown to be effective in the management of advanced hormone receptor positive (HR+) BC: palbociclib, abemaciclib, and ribociclib. The combination strategy of CDK4/6i and endocrine therapy (ET) has become the standard therapeutic regimen and is increasingly applied to advanced BC patients. The present study aims to clarify whether CDK4/6i can also achieve a certain therapeutic effect on Human epidermal growth factor receptor 2 positive (HER2+) BC. Studies of CDK4/6i are not limited to patients with estrogen receptor positive/human epidermal growth factor receptor 2 negative (ER+/HER2-) advanced BC, but have also expanded to other types of BC. Several pre-clinical and clinical trials have demonstrated the potential of CDK4/6i in treating HER2+ BC. Therefore, this review summarizes the current knowledge and recent findings on the use of CDK4/6i in this type of BC, and provides ideas for the discovery of new treatment modalities.
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Affiliation(s)
- Cui Zhang
- Zunyi Medical University, Zunyi, China
| | - Fulin Zhou
- Maternal and Child Health Care Hospital of Guiyang City, Guiyang, China
| | - Jiali Zou
- Maternal and Child Health Care Hospital of Guiyang City, Guiyang, China
| | - Yanman Fang
- Maternal and Child Health Care Hospital of Guiyang City, Guiyang, China
| | - Yuncong Liu
- Department of Oncology, Guizhou Provincial People’s Hospital, Guiyang, China
| | - Libo Li
- Department of Oncology, Guizhou Provincial People’s Hospital, Guiyang, China
| | - Jing Hou
- Department of Breast Surgery, Guizhou Provincial People’s Hospital, Guiyang, China
| | - Guanghui Wang
- Department of Breast Surgery, Guizhou Provincial People’s Hospital, Guiyang, China
| | - Hua Wang
- Department of Breast Surgery, Guizhou Provincial People’s Hospital, Guiyang, China
| | - Xiaolian Lai
- Department of Digestive, People’s Hospital of Songtao Miao Autonomous County, Tongren, China
| | - Lu Xie
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Jia Jiang
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Can Yang
- Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | | | | | - Hanqun Zhang
- Department of Oncology, Guizhou Provincial People’s Hospital, Guiyang, China
| | - Yong Li
- Department of Oncology, Guizhou Provincial People’s Hospital, Guiyang, China
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10
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Hussen BM, Abdullah KH, Abdullah SR, Majeed NM, Mohamadtahr S, Rasul MF, Dong P, Taheri M, Samsami M. New insights of miRNA molecular mechanisms in breast cancer brain metastasis and therapeutic targets. Noncoding RNA Res 2023; 8:645-660. [PMID: 37818447 PMCID: PMC10560790 DOI: 10.1016/j.ncrna.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/17/2023] [Accepted: 09/17/2023] [Indexed: 10/12/2023] Open
Abstract
Brain metastases in breast cancer (BC) patients are often associated with a poor prognosis. Recent studies have uncovered the critical roles of miRNAs in the initiation and progression of BC brain metastasis, highlighting the disease's underlying molecular pathways. miRNA-181c, miRNA-10b, and miRNA-21, for example, are all overexpressed in BC patients. It has been shown that these three miRNAs help tumors grow and metastasize by targeting genes that control how cells work. On the other hand, miRNA-26b5p, miRNA-7, and miRNA-1013p are all downregulated in BC brain metastasis patients. They act as tumor suppressors by controlling the expression of genes related to cell adhesion, angiogenesis, and invasion. Therapeutic miRNA targeting has considerable promise in treating BC brain metastases. Several strategies have been proposed to modulate miRNA expression, including miRNA-Mimics, antagomirs, and small molecule inhibitors of miRNA biogenesis. This review discusses the aberrant expression of miRNAs and metastatic pathways that lead to the spread of BC cells to the brain. It also explores miRNA therapeutic target molecular mechanisms and BC brain metastasis challenges with advanced strategies. The targeting of certain miRNAs opens a new door for the development of novel therapeutic approaches for this devastating disease.
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Affiliation(s)
- Bashdar Mahmud Hussen
- Department of Biomedical Sciences, College of Science, Cihan University-Erbil, Kurdistan Region, 44001, Iraq
- Department of Clinical Analysis, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq
| | - Khozga Hazhar Abdullah
- Medical Laboratory Science, College of Health Sciences, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | - Snur Rasool Abdullah
- Medical Laboratory Science, College of Health Sciences, Lebanese French University, Kurdistan Region, Erbil, Iraq
| | | | - Sayran Mohamadtahr
- Department of Pharmacology and Toxicology, College of Pharmacy, Hawler Medical University, Erbil, Iraq
| | - Mohammed Fatih Rasul
- Department of Pharmaceutical Basic Science, Tishk International University, Erbil, Kurdistan Region, Iraq
| | - Peixin Dong
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Hokkaido University, Sapporo, Japan
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Majid Samsami
- Cancer Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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11
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Burney IA, Aal Hamad AH, Hashmi SFA, Ahmad N, Pervez N. Evolution of the Management of Brain Metastases: A Bibliometric Analysis. Cancers (Basel) 2023; 15:5570. [PMID: 38067273 PMCID: PMC10705608 DOI: 10.3390/cancers15235570] [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] [Received: 08/31/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 05/04/2024] Open
Abstract
A systematic review of the published literature was conducted to analyze the management evolution of brain metastases from different cancers. Using the keywords "brain metastasis", "brain metastases", "CNS metastasis", "CNS metastases", "phase III" AND/OR "Randomized Controlled Trial" (RCT), relevant articles were searched for on the SCOPUS database. A total of 1986 articles were retrieved, published over a 45-year period (1977-2022). Relevant articles were defined as clinical studies describing the treatment or prevention of brain metastases from any cancer. Articles on imaging, quality of life, cognitive impairment after treatment, or primary brain tumors were excluded. After a secondary analysis, reviewing the abstracts and/or full texts, 724 articles were found to be relevant. Publications significantly increased in the last 10 years. A total of 252 articles (34.8%) were published in 12 core journals, receiving 50% of the citations. The number of publications in Frontiers in Oncology, BMC Cancer, and Radiotherapy and Oncology have increased considerably over the last few years. There were 111 randomized controlled trials, 128 review articles, and 63 meta-analyses. Most randomized trials reported on brain metastases management from unselected tumors (49), lung cancer (47), or breast cancer (11). In the last 5 years (2017 to 2022), management of brain metastasis has moved on from WBRT, the use of chemotherapy, and radio-sensitization to three directions. First, Radiosurgery or Radiotherapy (SRS/SRT), or hippocampal-sparing WBRT is employed to reduce radiation toxicity. Second, it has moved to the use of novel agents, such as tyrosine kinase inhibitors (TKI) and immune checkpoint inhibitors (ICI) and third, to the use of molecularly directed therapy such as TKIs, in asymptomatic low volume metastasis, obviating the need for WBRT.
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Affiliation(s)
- Ikram A. Burney
- Sultan Qaboos Comprehensive Cancer Care and Research Center, Muscat 123, Oman; (I.A.B.); (S.F.A.H.)
- Panjwani Center for Molecular Medicine & Drug Research, International Center of Chemical and Biological Sciences, Karachi University, Karachi 75270, Pakistan
| | | | - Syed F. A. Hashmi
- Sultan Qaboos Comprehensive Cancer Care and Research Center, Muscat 123, Oman; (I.A.B.); (S.F.A.H.)
| | - Nisar Ahmad
- Department of Economics and Finance, College of Economics and Political Science, Sultan Qaboos University, Muscat 123, Oman;
| | - Nadeem Pervez
- Sultan Qaboos Comprehensive Cancer Care and Research Center, Muscat 123, Oman; (I.A.B.); (S.F.A.H.)
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12
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Huang J, Zhu W, Duan Q, Zhu C, Shi X, Zhao H, Cai P, Li D. Efficacy and Safety of Radiotherapy Combined with Pyrotinib in the Treatment of HER2-Positive Breast Cancer with Brain Metastases. BREAST CANCER (DOVE MEDICAL PRESS) 2023; 15:841-853. [PMID: 38020051 PMCID: PMC10661917 DOI: 10.2147/bctt.s440427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 11/08/2023] [Indexed: 12/01/2023]
Abstract
Purpose To explore the efficacy and safety of pyrotinib combined with different radiotherapy modes in human epidermal growth factor receptor 2 (HER2)-positive breast cancer (BC) patients with brain metastasis (BM). Patients and Methods This study is a retrospective analysis of patients diagnosed with BM who underwent treatment with pyrotinib between November 2018 and April 2023. A total of 66 patients were administered radiotherapy in conjunction with pyrotinib (Group A), while 26 patients received pyrotinib as a standalone treatment (Group B). Within Group A, 18 patients underwent conventional fractionated radiotherapy (2Gy/F), while 48 patients received hyperfractionated radiotherapy (HFRT) (≥3Gy/F). The primary endpoints were intracranial progression-free survival (IC-PFS) and overall survival (OS). The secondary endpoints were objective response rate (ORR) and clinical benefit rate (CBR). Results The ORR of Group A was 54.5% (36/66), while the ORR of Group B was 34.6% (9/26) (P= 0.047). The CBR of Group A was 89.4% (59/66) and that of Group B was 69.2% (18/26) (P= 0.041). The IC-PFS between Group A and Group B were 12 months and 8 months, respectively (P< 0.001), and the OS were 20 months and 16 months, respectively (P= 0.065). In Group A, the IC-PFS and OS between the conventional fractionation radiotherapy group and the HFRT group were 10 months and 12 months, respectively (P= 0.001) and 16 months and 24 months, respectively (P< 0.001). No serious adverse reactions were observed in Group A and Group B. Conclusion For HER2-positive BC patients with BM, it is recommended to adopt the treatment mode of HFRT combined with pyrotinib, which can improve the local control and survival of patients.
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Affiliation(s)
- Jie Huang
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Wenqiang Zhu
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Qiangzhi Duan
- Department of Radiotherapy, The 2nd Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Chaomang Zhu
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Xueling Shi
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Hongyu Zhao
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Peng Cai
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
| | - Duojie Li
- Department of Radiotherapy, The First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, 233000, People’s Republic of China
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13
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Serra M, Rubes D, Schinelli S, Paolillo M. Small Molecules against Metastatic Tumors: Concrete Perspectives and Shattered Dreams. Cancers (Basel) 2023; 15:4173. [PMID: 37627201 PMCID: PMC10453213 DOI: 10.3390/cancers15164173] [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: 06/21/2023] [Revised: 07/29/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Metastasis is the main cause of anti-cancer therapy failure, leading to unfavorable prognosis for patients. The true challenge to increase cancer patient life expectancy by making cancer a chronic disease with periodic but manageable relapses relies on the development of efficient therapeutic strategies specifically directed against key targets in the metastatic process. Traditional chemotherapy with classical alkylating agents, microtubule inhibitors, and antimetabolites has demonstrated its limited efficacy against metastatic cells due to their capacity to select chemo-resistant cell populations that undergo epithelial-to-mesenchymal transition (EMT), thus promoting the colonization of distant sites that, in turn, sustain the initial metastatic process. This scenario has prompted efforts aimed at discovering a wide variety of small molecules and biologics as potential anti-metastatic drugs directed against more specific targets known to be involved in the various stages of metastasis. In this short review, we give an overview of the most recent advances related to important families of antimetastatic small molecules: intracellular tyrosine kinase inhibitors, cyclin-dependent kinase inhibitors, KRAS inhibitors, and integrin antagonists. Although the majority of these small molecules are not yet approved and not available in the drug market, any information related to their stage of development could represent a precious and valuable tool to identify new targets in the endless fight against metastasis.
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Affiliation(s)
- Massimo Serra
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy; (D.R.); (S.S.); (M.P.)
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14
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Li W, Gan C, Zuo H, Yin X, Jing Y, Pang L, Yu S, Tang L, Yao S, Cheng H. Psychological distress as risk factor for the efficacy of whole-brain radiotherapy in brain metastasis patients. Future Oncol 2023; 19:49-60. [PMID: 36651480 DOI: 10.2217/fon-2022-0690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Aim: To evaluate the relationship between psychological distress and the efficacy of whole-brain radiotherapy (WBRT) in advanced brain metastasis patients. Methods: Brain metastasis patients (40 with psychological distress and 47 without psychological distress) completed distress thermometer tests before WBRT, and progression-free survival (PFS) was acquired during the follow-up period. Results: Psychological distress was a risk factor for poorer PFS in patients treated with WBRT (p < 0.01). The PFS of survivors who underwent WBRT was superior for those without psychological distress (hazard ratio: 0.295; 95% CI: 0.173-0.500; p < 0.01). Conclusion: The survival of brain metastasis patients receiving WBRT was influenced by psychological distress, which negatively affected the treatment outcome and is likely to be a potential risk indicator in advanced cancer patients receiving WBRT.
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Affiliation(s)
- Wen Li
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Chen Gan
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - He Zuo
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Xiangxiang Yin
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Yanyan Jing
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Lulian Pang
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Sheng Yu
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Lingxue Tang
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Senbang Yao
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China
| | - Huaidong Cheng
- Department of Oncology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230601, China.,Department of Oncology, Anhui Medical University Hefei, Anhui, 230032, China.,Department of Oncology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong, 518101, China
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15
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Noteware L, Broadwater G, Dalal N, Alder L, Herndon Ii JE, Floyd S, Giles W, Van Swearingen AED, Anders CK, Sammons S. Brain metastasis as the first and only metastatic relapse site portends worse survival in patients with advanced HER2 + breast cancer. Breast Cancer Res Treat 2023; 197:425-434. [PMID: 36403183 DOI: 10.1007/s10549-022-06799-7] [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: 08/05/2022] [Accepted: 11/03/2022] [Indexed: 11/21/2022]
Abstract
PURPOSE Current systemic therapy guidelines for patients with HER2 + breast cancer brain metastases (BCBrM) diverge based on the status of extracranial disease (ECD). An in-depth understanding of the impact of ECD on outcomes in HER2 + BCBrM has never been performed. Our study explores the implications of ECD status on intracranial progression-free survival (iPFS) and overall survival (OS) after first incidence of HER2 + BCBrM and radiation. METHODS A retrospective analysis was performed of 151 patients diagnosed with initial HER2 + BCBrM who received radiation therapy to the central nervous system (CNS) at Duke between 2008 and 2021. The primary endpoint was iPFS defined as the time from first CNS radiation treatment to intracranial progression or death. OS was defined as the time from first CNS radiation or first metastatic disease to death. Systemic staging scans within 30 days of initial BCBrM defined ECD status as progressive, stable/responding or none (isolated brain relapse). RESULTS In this cohort, > 70% of patients had controlled ECD with either isolated brain relapse (27%) or stable/responding ECD (44%). OS from initial metastatic disease to death was markedly worse for patients with isolated intracranial relapse (median = 28.4 m) compared to those with progressive or stable/responding ECD (48.8 m and 71.5 m, respectively, p = 0.0028). OS from first CNS radiation to death was significantly worse for patients with progressive ECD (16.9 m) versus stable/responding (36.6 m) or isolated intracranial relapse (28.4 m, p = 0.007). iPFS did not differ statistically based on ECD status. Receipt of systemic therapy after first BCBrM significantly improved iPFS (HR 0.45, 95% CI: 0.25-0.81, p = 0.008) and OS (HR: 0.43 (95% CI: 0.23-0.81); p = 0.001). CONCLUSION OS in patients with HER2 + isolated BCBrM was inferior to those with concurrent progressive or stable/responding ECD. Studies investigating initiation of brain-penetrable HER2-targeted therapies earlier in the disease course of isolated HER2 + intracranial relapse patients are warranted.
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Affiliation(s)
- Laura Noteware
- Duke University School of Medicine, Durham, North Carolina, USA
| | - Gloria Broadwater
- Biostatistics Shared Resource, Duke Cancer Institute, Durham, North Carolina, USA
| | - Nicole Dalal
- Department of Medicine, University of California, San Francisco, California, USA
| | - Laura Alder
- Duke Cancer Institute, Durham, North Carolina, USA
| | - James E Herndon Ii
- Biostatistics Shared Resource, Duke Cancer Institute, Durham, North Carolina, USA.,Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina, USA
| | - Scott Floyd
- Duke Cancer Institute, Durham, North Carolina, USA.,Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, USA
| | - William Giles
- Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina, USA
| | - Amanda E D Van Swearingen
- Duke Cancer Institute, Durham, North Carolina, USA.,Duke Center for Brain and Spine Metastasis, Duke University Medical Center, 10 Bryan Searle Drive, Seeley G. Mudd Bldg., Room 449-A, Durham, North Carolina, USA
| | - Carey K Anders
- Duke Cancer Institute, Durham, North Carolina, USA.,Duke Center for Brain and Spine Metastasis, Duke University Medical Center, 10 Bryan Searle Drive, Seeley G. Mudd Bldg., Room 449-A, Durham, North Carolina, USA
| | - Sarah Sammons
- Duke Cancer Institute, Durham, North Carolina, USA. .,Duke Center for Brain and Spine Metastasis, Duke University Medical Center, 10 Bryan Searle Drive, Seeley G. Mudd Bldg., Room 449-A, Durham, North Carolina, USA.
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16
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Ma X, Li Y, Zhao Z, Li L, Gao C, Liu D, Li B, Zhao B. Pyrotinib combining with radiotherapy on breast cancer with brain metastasis. Exp Biol Med (Maywood) 2023; 248:106-116. [PMID: 36533572 PMCID: PMC10041048 DOI: 10.1177/15353702221142605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
With the extensive application of anti-human epidermal growth factor receptor-2 (HER2) targeted therapy, the prognosis of HER2-positive breast cancer brain metastasis (BCBM) has been improved greatly. Due to the lack of prospective randomized controlled studies; however, the treatment of active brain metastasis (BM) remains a difficulty in clinic. Based upon the retrospective studies, an effective approach of radiotherapy combined with pyrotinib in HER2-positive BCBM treatment was investigated in present research. In all, 29 patients who had active BM in HER2-positive breast cancer (BC) and underwent whole-brain radiotherapy (WBRT) combined with pyrotinib from January 2019 to May 2021 were enrolled. The progression-free survival (PFS), overall survival (OS), clinical benefit rate (CBR), objective response rate (ORR), and drug-related adverse events (AEs) were analyzed among patients undergoing WBRT combined with concurrent or sequence pyrotinib + capecitabine. After the systematic treatments using WBRT combined with pyrotinib + capecitabine, the mPFS and mOS of BM patients were 6.5 months and 15.5 months, respectively. PFS (7.2 vs 6.2 months, p = 0.038) and OS (19.0 vs 14.0 months, p = 0.014) were longer after sequence treatments than those after concurrent treatment. The central nervous system (CNS) ORR of sequence treatment was superior to that of concurrent treatment (80.4% vs 58.6%, p < 0.05). Vomiting (17.2%) and diarrhea (10.3%) were the most common adverse reactions ⩾ grade 3. WBRT combined with pyrotinib is safe and effective for the treatments of active BM in HER2-positive BC. WBRT combined with sequence pyrotinib + capecitabine is more effective and less toxic than concurrent treatment. Therefore, sequence treatment is potentially a preferred regimen for patients with active BM in HER2-positive BC. The size and number of BM lesions, presence or absence of hepatic metastasis, and combination mode of radiotherapy and targeted therapy are independent risk factors for active BM prognosis.
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Affiliation(s)
- Xiaoping Ma
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Yan Li
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Zhenhui Zhao
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Li Li
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Chunyan Gao
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Dan Liu
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Bingyu Li
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
| | - Bing Zhao
- Department of Breast Cancer, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi 830011, China
- The Clinical Research Center of Breast Tumor and Thyroid Tumor in Xinjiang Uygur Autonomous Region, Urumqi 830011, China
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17
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Tincknell G, Naveed A, Nankervis J, Mukhtiar A, Piper AK, Becker TM, Chantrill L, Aghmesheh M, Vine KL, Ranson M, Brungs D. HER2-Positive Gastroesophageal Cancers Are Associated with a Higher Risk of Brain Metastasis. Cancers (Basel) 2022; 14:5754. [PMID: 36497236 PMCID: PMC9735596 DOI: 10.3390/cancers14235754] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/09/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022] Open
Abstract
Brain metastasis from gastroesophageal adenocarcinomas (GOCs) is a rare but a devastating diagnosis. Human epidermal growth factor receptor 2 (HER2) is a prognostic and predictive biomarker in GOCs. The association of HER2 with GOC brain metastasis is not known. We performed a retrospective analysis of patients with GOCs with known HER2 status between January 2015 and November 2021. HER2 was assessed on either the primary tumour or metastasis by immunohistochemistry or in situ hybridization. The diagnosis of brain metastasis was made on standard imaging techniques in patients with symptoms or signs. HER2 results were available for 201 patients, with 34 patients (16.9%) HER2 positive. A total of 12 patients developed symptomatic brain metastasis from GOCs, of which 7 (58.3%) were HER2 positive. The development of symptomatic brain metastasis was significantly higher in the HER2-positive GOCs (OR8.26, 95%CI 2.09-35.60; p = 0.0009). There was no significant association of HER2 status and overall survival in patients with brain metastasis. Although the rate of brain metastasis remains low in GOCs, the incidence of symptomatic brain metastasis was significantly higher in patients with HER2-positive tumours.
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Affiliation(s)
- Gary Tincknell
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Cancer Care Centre, Illawarra Shoalhaven Local Health District, Wollongong, NSW 2500, Australia
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, NSW 2522, Australia
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Asma Naveed
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- NSW Health Pathology, Wollongong, NSW 2522, Australia
- Southern IML, Wollongong, NSW 2500, Australia
| | | | | | - Ann-Katrin Piper
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Therese M. Becker
- Ingham Institute for Applied Medical Research, Liverpool, NSW 2170, Australia
- UNSW Medicine, University of New South Wales, Kensington, NSW 2052, Australia
- School of Medicine, Western Sydney University, Sydney, NSW 2560, Australia
| | - Lorraine Chantrill
- Illawarra Cancer Care Centre, Illawarra Shoalhaven Local Health District, Wollongong, NSW 2500, Australia
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Morteza Aghmesheh
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Cancer Care Centre, Illawarra Shoalhaven Local Health District, Wollongong, NSW 2500, Australia
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Kara Lea Vine
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Marie Ranson
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- School of Chemistry and Molecular Biosciences, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Daniel Brungs
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW 2522, Australia
- Illawarra Cancer Care Centre, Illawarra Shoalhaven Local Health District, Wollongong, NSW 2500, Australia
- School of Medicine, University of Wollongong, Wollongong, NSW 2522, Australia
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18
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Zhang R, Zhao J, Zhao L. TRKB acts as a prognostic predictive marker in Her-2 positive breast cancer. Ann Diagn Pathol 2022; 60:152017. [PMID: 35905534 DOI: 10.1016/j.anndiagpath.2022.152017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 07/17/2022] [Indexed: 11/20/2022]
Abstract
Human epidermal growth factor receptor 2 (Her-2) positive breast cancer (BC) was associated with an increased risk for brain metastases. Tropomyosin receptor kinase (TRKB) is a specific binding receptor for brain-derived neurotrophic factor associated with brain metastases. However, TRKB was still unknown to be involved in Her-2 positive BC. A tissue microarray comprised of 60 Her-2 positive BC cases and 32 matched adjacent normal samples was analyzed for TRKB expression by immunohistochemical staining. Results were compared to clinicopathologic and survival data by univariate and multivariate analysis. Furthermore, we explored the co-expression genes and related functional proteins using GEPIA, Kaplan-Meier plotter, LinkedOmics and PPI. We found that TRKB protein expression levels were elevated in Her-2 positive BC, and high levels of TRKB expression were associated with vascular invasion, more lymph nodes metastases and more advanced TNM stage as well as poorer OS. TRKB was confirmed as an independent prognostic factor for Her-2 positive BC by univariate and multivariate analysis. Besides, enrichment analyses revealed that protein kinase B signaling was highly correlated to TRKB in Her-2 positive BC. Therefore, TRKB may act as a potential prognostic target and biomarker for Her-2 positive BC.
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Affiliation(s)
- Rui Zhang
- Department of Thyroid and Breast Surgery, Wuhan No.1 Hospital, Wuhan 430030, China
| | - Jianguo Zhao
- Department of Thyroid and Breast Surgery, Wuhan No.1 Hospital, Wuhan 430030, China
| | - Lu Zhao
- Department of Thyroid and Breast Surgery, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430030, China.
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19
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Evolving management of HER2+ breast cancer brain metastases and leptomeningeal disease. J Neurooncol 2022; 157:249-269. [PMID: 35244835 DOI: 10.1007/s11060-022-03977-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/23/2022] [Indexed: 12/14/2022]
Abstract
Patients with human epidermal growth factor receptor 2 (HER2)-positive breast cancer are at a particularly high risk of breast cancer brain metastasis (BCBM) and leptomeningeal disease (LMD). Improvements in systemic therapy have translated to improved survival for patients with HER2-positive BCBM and LMD. However, the optimal management of these cases is rapidly evolving and requires a multidisciplinary approach. Herein, a team of radiation oncologists, medical oncologists, neuro-oncologists, and breast surgeon created a review of the evolving management of HER2-positive BCBM and LMD. We assess the epidemiology, diagnosis, and evolving treatment options for patients with HER2-positive BCBM and LMD, as well as the ongoing prospective clinical trials enrolling these patients. The management of HER2-positive BCBM and LMD represents an increasingly common challenge that involves the coordination of local and systemic therapy. Advances in systemic therapy have resulted in an improved prognosis, and promising targeted therapies currently under prospective investigation have the potential to further benefit these patients.
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20
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Zhang M, Guo C, Chu Y, Xu R, Yin F, Qian J. [Dihydromyricetin reverses Herceptin resistance by up-regulating miR-98-5p and inhibiting IGF1R/HER2 dimer formation in SKBR3 cells]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2022; 42:207-214. [PMID: 35365444 DOI: 10.12122/j.issn.1673-4254.2022.02.06] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the effect of dihydromyricetin on the expression of miR-98-5p and its mechanism in the development of Herceptin resistance in SKBR3 cells. METHODS The expression of IGF2 and miR-98-5p and their interaction relationship were analyzed by bioinformatics analysis through TargetScan online databases. SKBR3 cells and drug-resistant SKBR3-R cells were cultured in cell experiments. Xenograft tumor mice were constructed by SKBR3 and SKBR3-R cells. Proteins were detected by western blotting and immunohistochemistry. Transfected cells were constructed by shRNA lentivirus vectors. RT-QPCR was used to detect RNA. Cell proliferation was detected by MTS method. Cell jnvasion was detected by Transwell assay. Luciferase reporting assays were used to verify RNA interactions. IGF-1R/HER2 heterodimer was determined by immunocoprecipitation. RESULTS The expression of IGF2, p-IGF1R, p-Akt and p-S6K in SKBR3-R cells were significantly higher than those in SKBR3 cells, while the expression of PTEN protein was lower in SKBR3-R cells (P < 0.05). IGF1R/HER2 heterodimer in SKBR3-R cells was significantly increased (P < 0.01).The expression of IGF2 and invasion ability were significantly reduced while transfected with miR-98-5p in SKBR3-R cells (P < 0.05), but the IGF2 mRNA were no difference in both cells (P > 0.05). The expression of miR-98-5p was up-regulated and IGF2 was decreased in drug-resistant xenograft tumor mice after feeding with dihydromyricetin, and the tumor became more sensitivity to Herceptin (P < 0.05). CONCLUSION Dihydromyricetin could induce the expression of miR-98-5p, which binds to IGF2 mRNA to reduce IGF2 expression, inhibit the IGF-1R/HER2 formation, thereby reversing cell resistance to Herceptin in SKBR3-R cells.
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Affiliation(s)
- M Zhang
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - C Guo
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - Y Chu
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - R Xu
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - F Yin
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - J Qian
- Department of Surgical Oncology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
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