1
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Wang SN, Wang YK, Zhu CY, Jiang B, Ge DF, Li YY. Significance of concurrent evaluation of HER2 gene amplification and p53 and Ki67 expression in gastric cancer tissues. Clin Transl Oncol 2024:10.1007/s12094-024-03534-0. [PMID: 38907827 DOI: 10.1007/s12094-024-03534-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/16/2024] [Indexed: 06/24/2024]
Abstract
OBJECTIVE The primary objective of this study is to explore the significance of concurrent evaluation of HER2 gene amplification and p53 and Ki67 expression in gastric cancer tissues. METHODS Fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC) methodologies were used to detect HER2 gene amplification, as well as the expression levels of HER2, p53, and Ki67 proteins, across a group of 78 gastric cancer cases. RESULTS The expression rate of the HER2 protein was determined to be 43.6% (34/78), with 17.9% (14/78) categorized as HER2 protein 3 + , 14.1% (11/78) as HER2 protein 2 + , and 11.5% (9/78) as HER2 protein 1 + . Using FISH technology, the HER2 gene amplification rate was identified as 19.2% (15/78), including 3 cases of HER2 gene cluster amplification, 5 cases of large granular amplification, 4 cases of punctate amplification, and 3 cases of high polysomy. The positive rate of p53 in gastric cancer cells was 52.6% (41/78), with 62.8% (49/78) of patients exhibiting a ki67 proliferation index ≤ 30, and 37.2% (29/78) accounting for a ki67 proliferation index > 30. The expression rates of the HER2 gene, p53, and ki67 in gastric cancer tissues were significantly associated with both gastric cancer staging and lymph node metastasis (P < 0.05). CONCLUSION The HER2 gene amplification rate and gene copy number exhibit a positive correlation with the expression rates of p53 and ki67. Combining these assessments can provide crucial insights into the assessment of metastatic potential, disease progression, and prognosis of gastric tumor cells. This holds paramount importance in steering the formulation of individualized treatment strategies.
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Affiliation(s)
- Su-Nan Wang
- Shenzhen Polytechnic, Xilihu Town, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Yang-Kun Wang
- Department of Pathology, The Fourth People's Hospital of Longgang District, Shenzhen, 518123, China
| | - Chao-Ya Zhu
- Department of Pathology, Third Affiliated Hospital of Zhengzhou University, Shenzhen, 450052, China
| | - Bo Jiang
- Department of Pathology, No. 990 Hospital of the PLA Joint Logistics Support Force, Zhumadian, 463000, China
| | - Dong-Feng Ge
- Department of Pathology, The First Affiliated Hospital of Henan University of Science and Technology, No. 24 Jinghua Road, Jianxi District, Luoyang, 471000, China.
| | - Ying-Ying Li
- Shenzhen Polytechnic, Xilihu Town, Nanshan District, Shenzhen, 518055, Guangdong, China.
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2
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Javed A, Yarmohammadi M, Korkmaz KS, Rubio-Tomás T. The Regulation of Cyclins and Cyclin-Dependent Kinases in the Development of Gastric Cancer. Int J Mol Sci 2023; 24:ijms24032848. [PMID: 36769170 PMCID: PMC9917736 DOI: 10.3390/ijms24032848] [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: 12/25/2022] [Revised: 01/23/2023] [Accepted: 01/28/2023] [Indexed: 02/05/2023] Open
Abstract
Gastric cancer predominantly occurs in adenocarcinoma form and is characterized by uncontrolled growth and metastases of gastric epithelial cells. The growth of gastric cells is regulated by the action of several major cell cycle regulators including Cyclins and Cyclin-dependent kinases (CDKs), which act sequentially to modulate the life cycle of a living cell. It has been reported that inadequate or over-activity of these molecules leads to disturbances in cell cycle dynamics, which consequently results in gastric cancer development. Manny studies have reported the key roles of Cyclins and CDKs in the development and progression of the disease in either in vitro cell culture studies or in vivo models. We aimed to compile the evidence of molecules acting as regulators of both Cyclins and CDKs, i.e., upstream regulators either activating or inhibiting Cyclins and CDKs. The review entails an introduction to gastric cancer, along with an overview of the involvement of cell cycle regulation and focused on the regulation of various Cyclins and CDKs in gastric cancer. It can act as an extensive resource for developing new hypotheses for future studies.
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Affiliation(s)
- Aadil Javed
- Department of Bioengineering, Faculty of Engineering, Cancer Biology Laboratory, Ege University, Izmir 35040, Turkey
- Correspondence: (A.J.); (T.R.-T.)
| | - Mahdieh Yarmohammadi
- Department of Biology, Faculty of Sciences, Central Tehran Branch, Islamic Azad University, Tehran 33817-74895, Iran
| | - Kemal Sami Korkmaz
- Department of Bioengineering, Faculty of Engineering, Cancer Biology Laboratory, Ege University, Izmir 35040, Turkey
| | - Teresa Rubio-Tomás
- School of Medicine, University of Crete, 70013 Herakleion, Crete, Greece
- Correspondence: (A.J.); (T.R.-T.)
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3
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Gastric squamous-columnar junction contains a large pool of cancer-prone immature osteopontin responsive Lgr5 -CD44 + cells. Nat Commun 2020; 11:84. [PMID: 31901081 PMCID: PMC6941991 DOI: 10.1038/s41467-019-13847-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 11/29/2019] [Indexed: 12/12/2022] Open
Abstract
Areas of a junction between two types of epithelia are known to be cancer-prone in many organ systems. However, mechanisms for preferential malignant transformation at the junction areas remain insufficiently elucidated. Here we report that inactivation of tumor suppressor genes Trp53 and Rb1 in the gastric squamous-columnar junction (SCJ) epithelium results in preferential formation of metastatic poorly differentiated neoplasms, which are similar to human gastroesophageal carcinoma. Unlike transformation-resistant antral cells, SCJ cells contain a highly proliferative pool of immature Lgr5−CD44+ cells, which are prone to transformation in organoid assays, comprise early dysplastic lesions, and constitute up to 30% of all neoplastic cells. CD44 ligand osteopontin (OPN) is preferentially expressed in and promotes organoid formation ability and transformation of the SCJ glandular epithelium. OPN and CD44 overexpression correlate with the worst prognosis of human gastroesophageal carcinoma. Thus, detection and selective targeting of the active OPN-CD44 pathway may have direct clinical relevance. Cancers arising from the gastric squamous-columnar junction have high incidence and are characterized by a poor prognosis. Here, the authors use genetic mouse models to show that loss of p53 and Rb1 expression results in preferential tumour development at the gastric squamous-columnar junction that contains a large pool of osteopontin responsive Lgr5-CD44+ cells.
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4
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Shen X, Hu K, Cheng G, Xu L, Chen Z, Du P, Zhuang Z. KDM5D inhibit epithelial‐mesenchymal transition of gastric cancer through demethylation in the promoter of Cul4A in male. J Cell Biochem 2019; 120:12247-12258. [PMID: 30864186 DOI: 10.1002/jcb.27308] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 06/27/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Xudong Shen
- Department of Oncology The Second Affiliated Hospital of Soochow University Suzhou China
| | - Kewei Hu
- Department of gastroenterology The Second Affiliated Hospital of Soochow University Suzhou China
| | - Guilian Cheng
- Department of gastroenterology The Second Affiliated Hospital of Soochow University Suzhou China
| | - Liming Xu
- Department of gastroenterology The Second Affiliated Hospital of Soochow University Suzhou China
| | - Zhengrong Chen
- Department of General Surgery The Second Affiliated Hospital of Soochow University Suzhou China
| | - Peng Du
- Department of General Surgery The Second Affiliated Hospital of Soochow University Suzhou China
| | - Zhixiang Zhuang
- Department of Oncology The Second Affiliated Hospital of Soochow University Suzhou China
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5
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Ferrer-Torres D, Nancarrow DJ, Kuick R, Thomas DG, Nadal E, Lin J, Chang AC, Reddy RM, Orringer MB, Taylor JMG, Wang TD, Beer DG. Genomic similarity between gastroesophageal junction and esophageal Barrett's adenocarcinomas. Oncotarget 2018; 7:54867-54882. [PMID: 27363029 PMCID: PMC5342387 DOI: 10.18632/oncotarget.10253] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/17/2016] [Indexed: 12/18/2022] Open
Abstract
The current high mortality rate of esophageal adenocarcinoma (EAC) reflects frequent presentation at an advanced stage. Recent efforts utilizing fluorescent peptides have identified overexpressed cell surface targets for endoscopic detection of early stage Barrett's-derived EAC. Unfortunately, 30% of EAC patients present with gastroesophageal junction adenocarcinomas (GEJAC) and lack premalignant Barrett's metaplasia, limiting this early detection strategy. We compared mRNA profiles from 52 EACs (tubular EAC; tEAC) collected above the gastroesophageal junction with 70 GEJACs, 8 normal esophageal and 5 normal gastric mucosa samples. We also analyzed our previously published whole-exome sequencing data in a large cohort of these tumors. Principal component analysis, hierarchical clustering and survival-based analyses demonstrated that GEJAC and tEAC were highly similar, with only modest differences in expression and mutation profiles. The combined expression cohort allowed identification of 49 genes coding cell surface targets overexpressed in both GEJAC and tEAC. We confirmed that three of these candidates (CDH11, ICAM1 and CLDN3) were overexpressed in tumors when compared to normal esophagus, normal gastric and non-dysplastic Barrett's, and localized to the surface of tumor cells. Molecular profiling of tEAC and GEJAC tumors indicated extensive similarity and related molecular processes. Identified genes that encode cell surface proteins overexpressed in both Barrett's-derived EAC and those that arise without Barrett's metaplasia will allow simultaneous detection strategies.
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Affiliation(s)
- Daysha Ferrer-Torres
- Cancer Biology, Program in Biomedical Science, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Derek J Nancarrow
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Rork Kuick
- Center for Cancer Biostatistics, Department of Biostatistics, School of Public Health, Ann Arbor, Michigan, USA
| | - Dafydd G Thomas
- Department of Pathology and Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Ernest Nadal
- Medical Oncology Department, Catalan Institute of Oncology, Barcelona, Spain
| | - Jules Lin
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Andrew C Chang
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Rishindra M Reddy
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Mark B Orringer
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Jeremy M G Taylor
- Center for Cancer Biostatistics, Department of Biostatistics, School of Public Health, Ann Arbor, Michigan, USA
| | - Thomas D Wang
- Department of Medicine and Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - David G Beer
- Section of Thoracic Surgery, Department of Surgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
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6
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Feng LM, Wang XF, Huang QX. Thymoquinone induces cytotoxicity and reprogramming of EMT in gastric cancer cells by targeting PI3K/Akt/mTOR pathway. J Biosci 2017; 42:547-554. [DOI: 10.1007/s12038-017-9708-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Abstract
Gastric cancer is the fifth most incident and the third most common cause of cancer-related death in the world. Infection with Helicobacter pylori is the major risk factor for this disease. Gastric cancer is the final outcome of a cascade of events that takes decades to occur and results from the accumulation of multiple genetic and epigenetic alterations. These changes are crucial for tumor cells to expedite and sustain the array of pathways involved in the cancer development, such as cell cycle, DNA repair, metabolism, cell-to-cell and cell-to-matrix interactions, apoptosis, angiogenesis, and immune surveillance. Comprehensive molecular analyses of gastric cancer have disclosed the complex heterogeneity of this disease. In particular, these analyses have confirmed that Epstein-Barr virus (EBV)-positive gastric cancer is a distinct entity. The identification of gastric cancer subtypes characterized by recognizable molecular profiles may pave the way for a more personalized clinical management and to the identification of novel therapeutic targets and biomarkers for screening, prognosis, prediction of response to treatment, and monitoring of gastric cancer progression.
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8
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Ichihara S, Uedo N, Gotoda T. Considering the esophagogastric junction as a 'zone'. Dig Endosc 2017; 29 Suppl 2:3-10. [PMID: 28425656 DOI: 10.1111/den.12792] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 12/21/2016] [Indexed: 02/08/2023]
Abstract
Siewert's classification of adenocarcinoma of the esophagogastric junction (EGJ) classifies tumors anatomically for determining the appropriate surgical technique. According to this classification, a type II tumor, true carcinoma of the cardia, is defined as a cancer within 1 cm proximal to 2 cm distal of the EGJ. Histological analysis indicates that the cardiac gland is present with a high degree of frequency between 1-2 cm to the gastric side and 1-2 cm to the esophageal side of the EGJ, which means that this zone can be considered as neither the stomach nor the esophagus but rather as a third zone known as the 'EGJ zone'. It has been suggested that there are multiple causes for development of adenocarcinoma in the EGJ zone. The TNM Classification of Malignant Tumours 7th Edition considers EGJ adenocarcinoma (EGJAC) occurring in the EGJ zone to be a part of esophageal adenocarcinoma (EAC). However, recent studies have indicated that EGJAC behaves differently from EAC and gastric carcinoma. Barrett's esophagus is now considered an important factor in the etiology of EGJAC, but, as yet, no studies have elucidated the differences between cancer arising from short-segment Barrett's esophagus and cancer of the gastric cardia. Thus, there is currently no clinical relevance to subdivision of adenocarcinoma in the EGJ zone into above or below the EGJ line.
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Affiliation(s)
- Shin Ichihara
- Department of Surgical Pathology, Sapporo Kosei General Hospital, Sapporo, Japan
| | - Noriya Uedo
- Department of Gastrointestinal Oncology, Osaka Medical Center for Cancer and Cardiovascular Disease, Osaka, Japan
| | - Takuji Gotoda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
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9
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Figueiredo C, Camargo MC, Leite M, Fuentes-Pananá EM, Rabkin CS, Machado JC. Pathogenesis of Gastric Cancer: Genetics and Molecular Classification. Curr Top Microbiol Immunol 2017. [PMID: 28124158 DOI: 10.1007/978-3-319-50520-6_12.erratum.in:currtopmicrobiolimmunol.2017;400:e1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
Gastric cancer is the fifth most incident and the third most common cause of cancer-related death in the world. Infection with Helicobacter pylori is the major risk factor for this disease. Gastric cancer is the final outcome of a cascade of events that takes decades to occur and results from the accumulation of multiple genetic and epigenetic alterations. These changes are crucial for tumor cells to expedite and sustain the array of pathways involved in the cancer development, such as cell cycle, DNA repair, metabolism, cell-to-cell and cell-to-matrix interactions, apoptosis, angiogenesis, and immune surveillance. Comprehensive molecular analyses of gastric cancer have disclosed the complex heterogeneity of this disease. In particular, these analyses have confirmed that Epstein-Barr virus (EBV)-positive gastric cancer is a distinct entity. The identification of gastric cancer subtypes characterized by recognizable molecular profiles may pave the way for a more personalized clinical management and to the identification of novel therapeutic targets and biomarkers for screening, prognosis, prediction of response to treatment, and monitoring of gastric cancer progression.
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Affiliation(s)
- Ceu Figueiredo
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal.,Faculty of Medicine of the University of Porto, Porto, Portugal
| | - M C Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, ML, USA
| | - Marina Leite
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal
| | - Ezequiel M Fuentes-Pananá
- Research Unit of Cancer and Virology, Children's Hospital of Mexico "Federico Gomez", Mexico City, Mexico
| | - Charles S Rabkin
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, ML, USA
| | - José C Machado
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal. .,Institute of Molecular Pathology and Immunology of the University of Porto (Ipatimup), Rua Júlio Amaral de Carvalho 45, 4200-135, Porto, Portugal. .,Faculty of Medicine of the University of Porto, Porto, Portugal.
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10
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Cell adhesion induces overexpression of chromodomain helicase/ATPase DNA binding protein 1-like gene (CHD1L) and contributes to cell adhesion-mediated drug resistance (CAM-DR) in multiple myeloma cells. Leuk Res 2016; 47:54-62. [DOI: 10.1016/j.leukres.2016.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 04/16/2016] [Accepted: 05/12/2016] [Indexed: 11/20/2022]
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11
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Chen J, Guo J, Chen Z, Wang J, Liu M, Pang X. Linifanib (ABT-869) Potentiates the Efficacy of Chemotherapeutic Agents through the Suppression of Receptor Tyrosine Kinase-Mediated AKT/mTOR Signaling Pathways in Gastric Cancer. Sci Rep 2016; 6:29382. [PMID: 27387652 PMCID: PMC4937412 DOI: 10.1038/srep29382] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 06/17/2016] [Indexed: 12/25/2022] Open
Abstract
Gastric cancer, highly dependent on tumor angiogenesis, causes uncontrolled lethality, in part due to chemoresistance. Here, we demonstrate that linifanib (ABT-869), a novel multi-targeted receptor tyrosine kinase inhibitor, markedly augments cytotoxicity of chemotherapies in human gastric cancer. ABT-869 and chemotherapeutic agents exhibited a strong synergy to inhibit the viability of several gastric cancer cell lines, with combination index values ranging from 0.017 to 0.589. Additionally, the combination of ABT-869 and chemotherapeutic agents led to remarkable suppression of vascular endothelial growth factor (VEGF)-induced angiogenesis in vitro and in vivo. Importantly, in a preclinical gastric cancer xenograft mouse model, drug co-treatments led to increased mouse survival as well as a synergistic reduction in tumor size and the inhibition of tumor angiogenesis. Mechanistic studies further revealed that all of the co-treatments containing ABT-869 resulted in decreased activation of the VEGF receptor, the epidermal growth factor receptor and the insulin growth factor receptor. Inhibition of these receptor tyrosine kinases consequently attenuated the activation of the downstream AKT/mTOR signaling pathway both in cultured gastric cancer cells and in gastric cancer xenografts. Collectively, our findings suggest that the addition of ABT-869 to traditional chemotherapies may be a promising strategy for the treatment of human gastric cancer.
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Affiliation(s)
- Jing Chen
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China.,Key Laboratory of Reproduction and Genetics in Ningxia, Ningxia Medical University, Yinchuan 750004, China
| | - Jiawei Guo
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Zhi Chen
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Jieqiong Wang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China.,Cancer Institute, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China.,Institute of Biosciences and Technology, Department of Molecular and Cellular Medicine, Texas A&M University Health Science Center, Houston, Texas 77030, USA
| | - Xiufeng Pang
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai 200241, China
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12
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Tamilzhalagan S, Muthuswami M, Periasamy J, Lee MH, Rha SY, Tan P, Ganesan K. Upregulated, 7q21–22 amplicon candidate gene SHFM1 confers oncogenic advantage by suppressing p53 function in gastric cancer. Cell Signal 2015; 27:1075-86. [DOI: 10.1016/j.cellsig.2015.02.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/28/2015] [Accepted: 02/09/2015] [Indexed: 10/24/2022]
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13
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Wang YK, Chen Z, Yun T, Li CY, Jiang B, Lv XX, Chu GH, Wang SN, Yan H, Shi LF. Human epidermal growth factor receptor 2 expression in mixed gastric carcinoma. World J Gastroenterol 2015; 21:4680-4687. [PMID: 25914479 PMCID: PMC4402317 DOI: 10.3748/wjg.v21.i15.4680] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 12/29/2014] [Accepted: 02/11/2015] [Indexed: 02/07/2023] Open
Abstract
AIM: To investigate human epidermal growth factor receptor 2 (HER2) amplification and protein expression in mixed gastric carcinoma.
METHODS: Fluorescence in situ hybridization and immunohistochemistry were used to detect HER2 amplification and protein expression in 277 cases of mixed gastric carcinoma. Protein staining intensity was rate as 1+, 2+, or 3+.
RESULTS: Of the 277 cases, 114 (41.2%) expressed HER2 protein. HER2 3+ staining was observed in 28/277 (10.1%) cases, 2+ in 37/277 (13.4%) cases, and 1+ in 49/277 (17.7%) cases. A HER2 amplification rate of 17% was detected, of which 25/28 (89.3%) were observed in the HER2 3+ staining group, 17/37 (45.9%) in 2+, and 5/49 (10.2%) in 1+. Of the 47 patients with HER2 amplification who received chemotherapy plus trastuzumab, 22 demonstrated median progression-free and overall survivals of 9.1 mo and 16.7 mo, respectively, which were significantly better than those achieved with chemotherapy alone (5.6 mo and 12.1 mo, respectively) in 19 previously treated patients (Ps < 0.05).
CONCLUSION: HER2 detection in mixed gastric carcinoma displays high heterogeneity. Relatively quantitative parameters are needed for assessing the level of HER2 amplification and protein expression.
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MESH Headings
- Adult
- Aged
- Antineoplastic Agents/therapeutic use
- Biomarkers, Tumor/analysis
- Biomarkers, Tumor/genetics
- Carcinoma/chemistry
- Carcinoma/drug therapy
- Carcinoma/genetics
- Carcinoma/mortality
- Carcinoma/pathology
- Disease Progression
- Disease-Free Survival
- Female
- Gene Amplification
- Humans
- Immunohistochemistry
- In Situ Hybridization, Fluorescence
- Male
- Middle Aged
- Neoplasms, Complex and Mixed/chemistry
- Neoplasms, Complex and Mixed/drug therapy
- Neoplasms, Complex and Mixed/genetics
- Neoplasms, Complex and Mixed/mortality
- Neoplasms, Complex and Mixed/pathology
- Patient Selection
- Predictive Value of Tests
- RNA, Messenger/analysis
- Receptor, ErbB-2/analysis
- Receptor, ErbB-2/antagonists & inhibitors
- Receptor, ErbB-2/genetics
- Stomach Neoplasms/chemistry
- Stomach Neoplasms/drug therapy
- Stomach Neoplasms/genetics
- Stomach Neoplasms/mortality
- Stomach Neoplasms/pathology
- Time Factors
- Trastuzumab/therapeutic use
- Treatment Outcome
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14
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Li Z, Zou X, Xie L, Chen H, Chen Y, Yeung SCJ, Zhang H. Personalizing risk stratification by addition of PAK1 expression to TNM staging: improving the accuracy of clinical decision for gastroesophageal junction adenocarcinoma. Int J Cancer 2015; 136:1636-45. [PMID: 25159681 DOI: 10.1002/ijc.29167] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 08/01/2014] [Accepted: 08/19/2014] [Indexed: 02/05/2023]
Abstract
Gastroesophageal junction adenocarcinoma (GEJA) is an aggressive malignancy with an alarmingly rising incidence. TNM staging is widely used by oncologists to stratify prognosis as well as direct therapeutic strategies. However, inadequate lymphadenectomy is frequently encountered for GEJA and largely confounds prognosis resulting from TNM staging. Thus, a molecular biomarker, which can accurately forecast the risk of nodal metastasis in patients with inadequate lymphadenectomy, is required to guide precisely clinical decision. In this study, bioinformatics and pathological analysis identified that p21 protein-activated kinase 1 (PAK1) is associated with lymph nodal metastasis of GEJA. The PAK1 H-score was lower in the patients with negative lymph nodes than that in patients with positive (metastatic) lymph nodes (6.865 ± 3.376, 9.370 ± 2.530, respectively; p < 0.001). The PAK1 H-score in lymph nodes was positively correlated with that in primary tumors (PTs; p < 0.001; r = 0.475). PAK1 H-scores in PTs had the best performance based on its area under the receiver-operating characteristic (ROC) curve compared with PAK1 H-scores in lymph nodes, histological grade, lymph nodal metastasis status, tumor size, depth of tumor, TNM stage and number of resected lymph nodes. Multivariate Cox proportional hazard and Fine and Gray models showed that histological grade 3, Charlson comorbidity index > 7 and high PAK1 expression in PTs were associated with significantly increased risk of recurrence and cancer-related death. In conclusion, high PAK1 expression in PTs is predictive of node metastasis and can be easily integrated in the clinical decision process for personalized therapeutics of GEJA.
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Affiliation(s)
- Zongtai Li
- Department of Biotherapy and Gastrointestinal Medical Oncology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China; Department of Oncological Radiotherapy, The People's Hospital of Gaozhou, Gaozhou, Guangdong, China; Cancer Research Center, Shantou University Medical College, Shantou, China
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15
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Li YY, Wang SN, Xu ZS, Wang JJ, Wang YK. Expression and amplification of HER2 in mixed-type gastric carcinoma. Shijie Huaren Xiaohua Zazhi 2014; 22:4627-4633. [DOI: 10.11569/wcjd.v22.i30.4627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the expression and amplification of human epidermal growth factor receptor-2 (HER2) in mixed-type gastric carcinoma.
METHODS: Immunohistochemistry (IHC) and fluorescence in situ hybridization (FISH) were used to detect the expression and amplification of HER2 in 277 cases of mixed-type gastric carcinoma, respectively.
RESULTS: The overall expression rate of HER2 protein was 41.5% (115/277). Strong HER2 protein expression (+++) accounted for 10.1% (28/277), including diffuse expression in 7 cases, partial expression in 12 cases, and focal expression in 4 cases. Moderate HER2 protein expression (++) accounted for 13.4% (37/277), including diffuse expression in 9 cases, partial expression in 16 cases, and focal expression in 6 cases. Weak HER2 protein expression (+) accounted for 18.1% (50/277), including diffuse expression in 11 cases, partial expression in 24 cases, and focal expression in 7 cases. Negative HER2 protein expression was noted in 162 cases, which accounted for 58.5% (162/277). The overall rate of HER2 gene amplification was 40.9% (47/115), including 89.3% (25/28) of cases with strong HER2 protein expression, 45.9% (17/37) of cases with moderate HER2 protein expression and 10% (5/50) of cases with weak HER2 protein expression. Of the 47 cases with amplification of the HER2 gene, only one case occurred in the region of squamous cell carcinoma, and the remaining 46 cases occurred in the adenocarcinoma region.
CONCLUSION: HER2 expression has great heterogeneity in mixed-type gastric carcinoma, and the classification of positive HER2 protein expression into diffuse, partial and focal types can provide a better quantitative parameter for targeted therapy with anti-tumor drugs.
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16
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Su FR, Ding JH, Bo L, Liu XG. Chromodomain helicase/ATPase DNA binding protein 1-like protein expression predicts poor prognosis in nasopharyngeal carcinoma. Exp Ther Med 2014; 8:1745-1750. [PMID: 25371726 PMCID: PMC4217779 DOI: 10.3892/etm.2014.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 09/11/2014] [Indexed: 12/22/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a malignancy with a high metastatic ability. Recent studies have implicated the role of chromodomain helicase/ATPase DNA binding protein 1-like (CHD1L) gene as a novel oncogene; however, the functional role of CHD1L in NPC remains unknown. The aim of this study was to evaluate the clinical significance of CHD1L positivity in NPC. CHD1L protein expression was examined by performing western blot analysis of 30 fresh NPC tissues and conducting immunohistochemistry tests of 133 NPC samples between December 1, 2005 and December 1, 2009. The correlations of CHD1L expression status with clinicopathological features and prognosis were investigated. Immunohistochemical analysis showed that 88 of 133 (66.2%) paraffin-embedded NPC biopsies exhibited positive expression of CHD1L, but all non-cancerous nasopharyngeal specimens were negative for CHD1L expression. In addition, positive CHD1L expression was strongly associated with an advanced clinical stage (P=0.016), recurrence (P=0.002) and the metastasis status (P=0.031) of NPC. Kaplan-Meier survival analysis demonstrated that patients with CHD1L-positive NPC had significantly shorter overall survival (P<0.001). Furthermore, the multivariate analysis indicated that CHD1L protein expression was an independent prognostic factor for overall survival (hazard ratio, 7.916; 95% confidence interval, 2.067-16.034; P=0.003) in patients with NPC. These results indicate that CHD1L is a prognostic marker for NPC.
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Affiliation(s)
- Fa-Ren Su
- Department of Otorhinolaryngology and Head and Neck Surgery, Shandong People's Armed Police Corps Hospital, Jinan, Shandong 250014, P.R. China
| | - Jing-Hua Ding
- Department of Otorhinolaryngology and Head and Neck Surgery, Shandong People's Armed Police Corps Hospital, Jinan, Shandong 250014, P.R. China
| | - Lin Bo
- Department of Otorhinolaryngology and Head and Neck Surgery, Shandong People's Armed Police Corps Hospital, Jinan, Shandong 250014, P.R. China
| | - Xin-Gang Liu
- Department of Otorhinolaryngology and Head and Neck Surgery, Shandong People's Armed Police Corps Hospital, Jinan, Shandong 250014, P.R. China
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17
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Cellini F, Morganti AG, Di Matteo FM, Mattiucci GC, Valentini V. Clinical management of gastroesophageal junction tumors: past and recent evidences for the role of radiotherapy in the multidisciplinary approach. Radiat Oncol 2014; 9:45. [PMID: 24499595 PMCID: PMC3942272 DOI: 10.1186/1748-717x-9-45] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 02/01/2014] [Indexed: 11/16/2022] Open
Abstract
Gastroesophageal cancers (such as esophageal, gastric and gastroesophageal-junction -GEJ- lesions) are worldwide a leading cause of death being relatively rare but highly aggressive. In the past years, a clear shift in the location of upper gastrointestinal tract tumors has been recorded, both affecting the scientific research and the modern clinical practice. The integration of pre- or peri-operative multimodal approaches, as radiotherapy and chemotherapy (often combined), seems promising to further improve clinical outcome for such presentations. In the past, the definition of GEJ led to controversies and confusion: GEJ tumors have been managed either grouped to gastric or esophageal lesions, following slightly different surgical, radiotherapeutic and systemic approaches. Recently, the American Joint Committee on Cancer (AJCC) changed the staging and classification system of GEJ to harmonize some staging issues for esophageal and gastric cancer. This review discusses the most relevant historical and recent evidences of neoadjuvant treatment involving Radiotherapy for GEJ tumors, and describes the efficacy of such treatment in the frame of multimodal integrated therapies, from the new point of view of the recent classification of such tumors.
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Affiliation(s)
- Francesco Cellini
- Radiation Oncology, Policlinico Universitario Campus Bio-Medico, Via Álvaro del Portillo, 200, 00144 Rome, Italy
| | - Alessio G Morganti
- Radiotherapy Department, Fondazione di Ricerca e Cura “Giovanni Paolo II”, Largo Agostino Gemelli 1, 86100 Campobasso, Italy
- Radiation Oncology Department, Policlinico Universitario “A. Gemelli”, Universita` Cattolica del Sacro Cuore, L.go Francesco Vito 1, 00168 Rome, Italy
| | - Francesco M Di Matteo
- GI Endoscopy Unit, Policlinico Universitario Campus Bio-Medico University, Via Alvaro del Portillo 200, 00128 Rome, Italy
| | - Gian Carlo Mattiucci
- Radiation Oncology Department, Policlinico Universitario “A. Gemelli”, Universita` Cattolica del Sacro Cuore, L.go Francesco Vito 1, 00168 Rome, Italy
| | - Vincenzo Valentini
- Radiation Oncology Department, Policlinico Universitario “A. Gemelli”, Universita` Cattolica del Sacro Cuore, L.go Francesco Vito 1, 00168 Rome, Italy
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Wang Y, Wen M, Kwon Y, Xu Y, Liu Y, Zhang P, He X, Wang Q, Huang Y, Jen KY, LaBarge MA, You L, Kogan SC, Gray JW, Mao JH, Wei G. CUL4A induces epithelial-mesenchymal transition and promotes cancer metastasis by regulating ZEB1 expression. Cancer Res 2013; 74:520-31. [PMID: 24305877 DOI: 10.1158/0008-5472.can-13-2182] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The ubiquitin ligase CUL4A has been implicated in tumorigenesis, but its contributions to progression and metastasis have not been evaluated. Here, we show that CUL4A is elevated in breast cancer as well as in ovarian, gastric, and colorectal tumors in which its expression level correlates positively with distant metastasis. CUL4A overexpression in normal or malignant human mammary epithelial cells increased their neoplastic properties in vitro and in vivo, markedly increasing epithelial-mesenchymal transition (EMT) and the metastatic capacity of malignant cells. In contrast, silencing CUL4A in aggressive breast cancer cells inhibited these processes. Mechanistically, we found that CUL4A modulated histone H3K4me3 at the promoter of the EMT regulatory gene ZEB1 in a manner associated with its transcription. ZEB1 silencing blocked CUL4A-driven proliferation, EMT, tumorigenesis, and metastasis. Furthermore, in human breast cancers, ZEB1 expression correlated positively with CUL4A expression and distant metastasis. Taken together, our findings reveal a pivotal role of CUL4A in regulating the metastatic behavior of breast cancer cells.
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Affiliation(s)
- Yunshan Wang
- Authors' Affiliations: Department of Human Anatomy and Key Laboratory of Experimental Teratology, Ministry of Education; Department of Biochemistry and Molecular Biology, Shandong University School of Medicine; Department of Respiratory Medicine, Qilu Hospital, Shandong University, Jinan; International Biotechnology R&D Center, Shandong University School of Ocean, Weihai, Shandong, China; Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley; Department of Pathology; Thoracic Oncology Laboratory, Department of Surgery; Helen Diller Family Comprehensive Cancer Center and Department of Laboratory Medicine, University of California at San Francisco, San Francisco, California; and Department of Biomedical Engineering, Oregon Health and Science University, Portland, Oregon
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19
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Abstract
BACKGROUND Chromodomain helicase/ATPase DNA binding protein 1-like gene (CHD1L) is involved in malignancies. However, the role of CHD1L in gastric cancer (GC) has not been elucidated. The aim of this study is to explore the clinical role of CHD1L in GC. METHODS The gene and protein expression levels of CHD1L were detected by quantitative real-time PCR and Western blot analysis in fresh samples of GC and paired adjacent noncancerous tissue (n = 34). We evaluated the CHD1L expression by immunohistochemistry in a large number of GC patients (n = 616) and paired adjacent noncancerous tissues from December 1, 2004 to December 1, 2008. The correlations of CHD1L expression with clinicopathological features and clinical outcome were analyzed. RESULTS The gene and protein expression levels of CHD1L were higher in fresh samples of GC than in paired adjacent noncancerous tissues as determined by quantitative real-time PCR and Western blot analysis. Immunohistochemical analysis showed that positive expression rates of CHD1L in GC and paired adjacent noncancerous tissues were 58.7 % (361/616) and 7.3 % (45/616), respectively. CHD1L positivity was significantly associated with clinical stage and distant metastasis. GC patients with positive CHD1L expression had shorter overall survival than those with negative CHD1L expression. Multivariate analysis showed that CHD1L was an independent prognostic marker for overall survival [Hazard Ratio (HR) = 5.952, 95 % confidence interval (CI) = 3.194-11.187, P = 0.0043]. CONCLUSION These results indicated that CHD1L could serve as a prognostic marker for GC.
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20
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Su Z, Zhao J, Xian G, Geng W, Rong Z, Wu Y, Qin C. CHD1L is a novel independent prognostic factor for gastric cancer. Clin Transl Oncol 2013; 16:702-7. [PMID: 24258459 DOI: 10.1007/s12094-013-1136-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 11/11/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND Chromodomain helicase/ATPase DNA binding protein 1-like gene (CHD1L) is involved in malignancies. However, the role of CHD1L in gastric cancer (GC) has not been elucidated. The aim of this study is to explore the clinical role of CHD1L in GC. METHODS The gene and protein expression levels of CHD1L were detected by quantitative real-time PCR and Western blot analysis in fresh samples of GC and paired adjacent noncancerous tissue (n = 34). We evaluated the CHD1L expression by immunohistochemistry in a large number of GC patients (n = 616) and paired adjacent noncancerous tissues from December 1, 2004 to December 1, 2008. The correlations of CHD1L expression with clinicopathological features and clinical outcome were analyzed. RESULTS The gene and protein expression levels of CHD1L were higher in fresh samples of GC than in paired adjacent noncancerous tissues as determined by quantitative real-time PCR and Western blot analysis. Immunohistochemical analysis showed that positive expression rates of CHD1L in GC and paired adjacent noncancerous tissues were 58.7 % (361/616) and 7.3 % (45/616), respectively. CHD1L positivity was significantly associated with clinical stage and distant metastasis. GC patients with positive CHD1L expression had shorter overall survival than those with negative CHD1L expression. Multivariate analysis showed that CHD1L was an independent prognostic marker for overall survival [Hazard Ratio (HR) = 5.952, 95 % confidence interval (CI) = 3.194-11.187, P = 0.0043]. CONCLUSION These results indicated that CHD1L could serve as a prognostic marker for GC.
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Affiliation(s)
- Z Su
- Department of Hepatobiliary Surgery, Provincial Hospital Affiliated to Shandong University, 324 Jingwu Road, Jinan, 250021, Shandong, China,
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21
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Abstract
Gastric cancer imposes a considerable health burden around the globe despite its declining incidence. The disease is often diagnosed in advanced stages and is associated with a poor prognosis for patients. An in-depth understanding of the molecular underpinnings of gastric cancer has lagged behind many other cancers of similar incidence and morbidity, owing to our limited knowledge of germline susceptibility traits for risk and somatic drivers of progression (to identify novel therapeutic targets). A few germline (PLCE1) and somatic (ERBB2, ERBB3, PTEN, PI3K/AKT/mTOR, FGF, TP53, CDH1 and MET) alterations are emerging and some are being pursued clinically. Novel somatic gene targets (ARID1A, FAT4, MLL and KMT2C) have also been identified and are of interest. Variations in the therapeutic approaches dependent on geographical region are evident for localized gastric cancer-differences that are driven by preferences for the adjuvant strategies and the extent of surgery coupled with philosophical divides. However, greater uniformity in approach has been noted in the metastatic cancer setting, an incurable condition. Having realized only modest successes, momentum is building for carrying out more phase III comparative trials, with some using biomarker-based patient selection strategies. Overall, rapid progress in biotechnology is improving our molecular understanding and can help with new drug discovery. The future prospects are excellent for defining biomarker-based subsets of patients and application of specific therapeutics. However, many challenges remain to be tackled. Here, we review representative molecular and clinical dimensions of gastric cancer.
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Affiliation(s)
- Roopma Wadhwa
- Department of Gastrointestinal Medical Oncology, The University of
Texas M. D. Anderson Cancer Center, Houston, Texas, 77030
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of
Texas M. D. Anderson Cancer Center, Houston, Texas, 77030
| | - Ju-Seog Lee
- Department of Systems Biology, The University of Texas M. D.
Anderson Cancer Center, Houston, Texas, 77030
| | - Yixin Yao
- Department of Gastrointestinal Medical Oncology, The University of
Texas M. D. Anderson Cancer Center, Houston, Texas, 77030
| | - Qingyi Wei
- Department of Epidemiology, The University of Texas M. D. Anderson
Cancer Center, Houston, Texas, 77030
| | - Jaffer A. Ajani
- Department of Gastrointestinal Medical Oncology, The University of
Texas M. D. Anderson Cancer Center, Houston, Texas, 77030
- Department of Epidemiology, The University of Texas M. D. Anderson
Cancer Center, Houston, Texas, 77030
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22
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Chong IY, Cunningham D, Barber LJ, Campbell J, Chen L, Kozarewa I, Fenwick K, Assiotis I, Guettler S, Garcia-Murillas I, Awan S, Lambros M, Starling N, Wotherspoon A, Stamp G, Gonzalez-de-Castro D, Benson M, Chau I, Hulkki S, Nohadani M, Eltahir Z, Lemnrau A, Orr N, Rao S, Lord CJ, Ashworth A. The genomic landscape of oesophagogastric junctional adenocarcinoma. J Pathol 2013; 231:301-10. [DOI: 10.1002/path.4247] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Irene Y Chong
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Cancer Research UK Gene Function Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - David Cunningham
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Louise J Barber
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Cancer Research UK Gene Function Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - James Campbell
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Cancer Research UK Gene Function Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Tumour Profiling Unit; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Lina Chen
- Tumour Profiling Unit; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Iwanka Kozarewa
- Tumour Profiling Unit; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Kerry Fenwick
- Tumour Profiling Unit; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Ioannis Assiotis
- Tumour Profiling Unit; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Sebastian Guettler
- Structural Biology of Cell Signalling Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Isaac Garcia-Murillas
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Saima Awan
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Maryou Lambros
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Cancer Research UK Gene Function Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Tumour Profiling Unit; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Naureen Starling
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Andrew Wotherspoon
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Gordon Stamp
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | | | - Martin Benson
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Ian Chau
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Sanna Hulkki
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Mahrokh Nohadani
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Zakaria Eltahir
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Alina Lemnrau
- Complex Trait Genetics Laboratory; The Institute of Cancer Research; London SW3 6JB UK
| | - Nicholas Orr
- Complex Trait Genetics Laboratory; The Institute of Cancer Research; London SW3 6JB UK
| | - Sheela Rao
- Royal Marsden Hospital NHS Foundation Trust; Downs Road Sutton SM2 5PT UK
| | - Christopher J Lord
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Cancer Research UK Gene Function Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
| | - Alan Ashworth
- The Breakthrough Breast Cancer Research Centre; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
- Cancer Research UK Gene Function Laboratory; The Institute of Cancer Research; 237 Fulham Road, London SW3 6JB UK
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23
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Abstract
Gastric cancer imposes a considerable health burden around the globe despite its declining incidence. The disease is often diagnosed in advanced stages and is associated with a poor prognosis for patients. An in-depth understanding of the molecular underpinnings of gastric cancer has lagged behind many other cancers of similar incidence and morbidity, owing to our limited knowledge of germline susceptibility traits for risk and somatic drivers of progression (to identify novel therapeutic targets). A few germline (PLCE1) and somatic (ERBB2, ERBB3, PTEN, PI3K/AKT/mTOR, FGF, TP53, CDH1 and MET) alterations are emerging and some are being pursued clinically. Novel somatic gene targets (ARID1A, FAT4, MLL and KMT2C) have also been identified and are of interest. Variations in the therapeutic approaches dependent on geographical region are evident for localized gastric cancer-differences that are driven by preferences for the adjuvant strategies and the extent of surgery coupled with philosophical divides. However, greater uniformity in approach has been noted in the metastatic cancer setting, an incurable condition. Having realized only modest successes, momentum is building for carrying out more phase III comparative trials, with some using biomarker-based patient selection strategies. Overall, rapid progress in biotechnology is improving our molecular understanding and can help with new drug discovery. The future prospects are excellent for defining biomarker-based subsets of patients and application of specific therapeutics. However, many challenges remain to be tackled. Here, we review representative molecular and clinical dimensions of gastric cancer.
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24
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Wong H, Yau T. Molecular targeted therapies in advanced gastric cancer: does tumor histology matter? Therap Adv Gastroenterol 2013; 6:15-31. [PMID: 23320047 PMCID: PMC3539290 DOI: 10.1177/1756283x12453636] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
It is increasingly recognized that gastric cancer is a heterogeneous disease which may be divided into subgroups based on histological, anatomical, epidemiological and molecular classifications. Distinct molecular drivers and tumor biology, and thus different treatment targets and predictive biomarkers, may be implicated in each subtype. However, there is little evidence in the literature regarding the correlation among these different classifications, and particularly the molecular aberrations present in each subtype. In this review, we approach advanced gastric cancer (AGC) by presenting aberrant molecular pathways and their potential therapeutic targets in gastric cancer according to histological and anatomical classification, dividing gastric cancer into proximal nondiffuse, distal nondiffuse and diffuse disease. Several pathways are involved predominantly, although not exclusively, in different subtypes. This may help to explain the disappointing results of many published AGC trials in which study populations were heterogeneous regardless of clinicopathological characteristics of the primary tumor. Histological and anatomical classification may provide insights into tumor biology and facilitate selection of an enriched patient population for targeted agents in future studies and in the clinic. However, some molecular pathways implicated in gastric cancer have not been studied in correlation with histological or anatomical subtypes. Further studies are necessary to confirm the suggestion that such classification may predict tumor biology and facilitate selection of an enriched patient population for targeted agents in future studies and in the clinic.
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Affiliation(s)
- Hilda Wong
- Division of Hematology and Medical Oncology, Department of Medicine, Queen Mary Hospital, Hong Kong
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25
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Li Z, Zou X, Xie L, Dong H, Chen Y, Liu Q, Wu X, Zhou D, Tan D, Zhang H. Prognostic importance and therapeutic implications of PAK1, a drugable protein kinase, in gastroesophageal junction adenocarcinoma. PLoS One 2013; 8:e80665. [PMID: 24236193 PMCID: PMC3827444 DOI: 10.1371/journal.pone.0080665] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 10/04/2013] [Indexed: 02/05/2023] Open
Abstract
Gastroesophageal junction (GEJ) adenocarcinoma is a lethal cancer with rising incidence, yet the molecular biomarkers that have strong prognostic impact and also hold great therapeutic promise remain elusive. We used a data mining approach and identified the p21 protein-activated kinase 1 (PAK1), an oncogene and drugable protein kinase, to be among the most promising targets for GEJ adenocarcinoma. Immunoblot analysis and data mining demonstrated that PAK1 protein and mRNA were upregulated in cancer tissues compared to the noncancerous tissues. Immunohistochemistry revealed PAK1 overexpression in 72.6% of primary GEJ adenocarcinomas (n = 113). A step-wise increase in PAK1 levels was noted from paired normal epithelium, to atypical hyperplasia and adenocarcinoma. PAK1 overexpression in tumor was associated with lymph node (LN) metastasis (P<0.001), advanced tumor stage (P<0.001), large tumor size (P = 0.006), residual surgical margin (P = 0.033), and unfavorable overall survival (P<0.001). Multivariate analysis showed PAK1 overexpression is an independent high-risk prognostic predictor (P<0.001). Collectively, PAK1 is overexpressed during tumorigenic progression and its upregulation correlates with malignant properties mainly relevant to invasion and metastasis. PAK1 expression could serve as a prognostic predictor that holds therapeutic promise for GEJ adenocarcinoma.
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Affiliation(s)
- Zongtai Li
- Department of Integrative Oncology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
- Cancer Research Center, Shantou University Medical College, Shantou, China
| | - Xiaofang Zou
- Department of Integrative Oncology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
- Cancer Research Center, Shantou University Medical College, Shantou, China
| | - Liangxi Xie
- Department of Radiation Oncology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
| | - Hongmei Dong
- Cancer Research Center, Shantou University Medical College, Shantou, China
| | - Yuping Chen
- Department of Thoracic Surgery, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
| | - Qing Liu
- Department of Integrative Oncology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
- Cancer Research Center, Shantou University Medical College, Shantou, China
| | - Xiao Wu
- Department of Pathology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
- Tumor Tissue Bank, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
| | - David Zhou
- Department of Pathology, University of Rochester Medical Center, Rochester, New York, United States of America
| | - Dongfeng Tan
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Hao Zhang
- Department of Integrative Oncology, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
- Cancer Research Center, Shantou University Medical College, Shantou, China
- Tumor Tissue Bank, Affiliated Cancer Hospital of Shantou University Medical College, Shantou, China
- * E-mail:
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26
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Liu YY, Chen HY, Zhang ML, Tian D, Li S, Lee JY. Loss of fragile histidine triad and amplification of 1p36.22 and 11p15.5 in primary gastric adenocarcinomas. World J Gastroenterol 2012; 18:4522-32. [PMID: 22969225 PMCID: PMC3435777 DOI: 10.3748/wjg.v18.i33.4522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 02/01/2012] [Accepted: 04/13/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the genomic copy number alterations that may harbor key driver genes in gastric tumorigenesis.
METHODS: Using high-resolution array comparative genomic hybridization (CGH), we investigated the genomic alterations of 20 advanced primary gastric adenocarcinomas (seventeen tubular and three mucinous) of Chinese patients from the Jilin province. Ten matching adjacent normal regions from the same patients were also studied.
RESULTS: The most frequent imbalances detected in these cancer samples were gains of 3q26.31-q27.2, 5p, 8q, 11p, 18p, 19q and 20q and losses of 3p, 4p, 18q and 21q. The use of high-resolution array CGH increased the resolution and sensitivity of the observed genomic changes and identified focal genetic imbalances, which included 54 gains and 16 losses that were smaller than 1 Mb in size. The most interesting focal imbalances were the intergenic loss/homozygous deletion of the fragile histidine triad gene and the amplicons 11q13, 18q11.2 and 19q12, as well as the novel amplicons 1p36.22 and 11p15.5.
CONCLUSION: These regions, especially the focal amplicons, may harbor key driver genes that will serve as biomarkers for either the diagnosis or the prognosis of gastric cancer, and therefore, a large-scale investigation is recommended.
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27
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Cheng L, Wang P, Yang S, Yang Y, Zhang Q, Zhang W, Xiao H, Gao H, Zhang Q. Identification of genes with a correlation between copy number and expression in gastric cancer. BMC Med Genomics 2012; 5:14. [PMID: 22559327 PMCID: PMC3441862 DOI: 10.1186/1755-8794-5-14] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2011] [Accepted: 03/27/2012] [Indexed: 12/11/2022] Open
Abstract
Background To elucidate gene expression associated with copy number changes, we performed a genome-wide copy number and expression microarray analysis of 25 pairs of gastric tissues. Methods We applied laser capture microdissection (LCM) to obtain samples for microarray experiments and profiled DNA copy number and gene expression using 244K CGH Microarray and Human Exon 1.0 ST Microarray. Results Obviously, gain at 8q was detected at the highest frequency (70%) and 20q at the second (63%). We also identified molecular genetic divergences for different TNM-stages or histological subtypes of gastric cancers. Interestingly, the C20orf11 amplification and gain at 20q13.33 almost separated moderately differentiated (MD) gastric cancers from poorly differentiated (PD) type. A set of 163 genes showing the correlations between gene copy number and expression was selected and the identified genes were able to discriminate matched adjacent noncancerous samples from gastric cancer samples in an unsupervised two-way hierarchical clustering. Quantitative RT-PCR analysis for 4 genes (C20orf11, XPO5, PUF60, and PLOD3) of the 163 genes validated the microarray results. Notably, some candidate genes (MCM4 and YWHAZ) and its adjacent genes such as PRKDC, UBE2V2, ANKRD46, ZNF706, and GRHL2, were concordantly deregulated by genomic aberrations. Conclusions Taken together, our results reveal diverse chromosomal region alterations for different TNM-stages or histological subtypes of gastric cancers, which is helpful in researching clinicopathological classification, and highlight several interesting genes as potential biomarkers for gastric cancer.
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Affiliation(s)
- Lei Cheng
- State Key Laboratory of Medical Genomics and Shanghai Institute of Hematology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Lockwood WW, Thu KL, Lin L, Pikor LA, Chari R, Lam WL, Beer DG. Integrative genomics identified RFC3 as an amplified candidate oncogene in esophageal adenocarcinoma. Clin Cancer Res 2012; 18:1936-46. [PMID: 22328562 DOI: 10.1158/1078-0432.ccr-11-1431] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE Esophageal adenocarcinoma (EAC) is a lethal malignancy that can develop from the premalignant condition, Barrett's esophagus (BE). Currently, there are no validated simple methods to predict which patients will progress to EAC. A better understanding of the genetic mechanisms driving EAC tumorigenesis is needed to identify new therapeutic targets and develop biomarkers capable of identifying high-risk patients that would benefit from aggressive neoadjuvant therapy. We employed an integrative genomics approach to identify novel genes involved in EAC biology that may serve as useful clinical markers. EXPERIMENTAL DESIGN Whole genome tiling-path array comparative genomic hybridization was used to identify significant regions of copy number alteration in 20 EACs and 10 matching BE tissues. Copy number and gene expression data were integrated to identify candidate oncogenes within regions of amplification and multiple additional sample cohorts were assessed to validate candidate genes. RESULTS We identified RFC3 as a novel, candidate oncogene activated by amplification in approximately 25% of EAC samples. RFC3 was also amplified in BE from a patient whose EAC harbored amplification and was differentially expressed between nonmalignant and EAC tissues. Copy number gains were detected in other cancer types and RFC3 knockdown inhibited proliferation and anchorage-independent growth of cancer cells with increased copy number but had little effect on those without. Moreover, high RFC3 expression was associated with poor patient outcome in multiple cancer types. CONCLUSIONS RFC3 is a candidate oncogene amplified in EAC. RFC3 DNA amplification is also prevalent in other epithelial cancer types and RFC3 expression could serve as a prognostic marker.
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Affiliation(s)
- William W Lockwood
- Integrative Oncology, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada.
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Park HS, Rha SY, Kim HS, Hyung WJ, Park JS, Chung HC, Noh SH, Jeung HC. A prognostic model to predict clinical outcome in gastric cancer patients with bone metastasis. Oncology 2011; 80:142-50. [PMID: 21677462 DOI: 10.1159/000328507] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 03/02/2011] [Indexed: 12/13/2022]
Abstract
BACKGROUND The clinicopathological manifestations and treatment outcomes of bone metastasis of gastric cancer are largely unknown. We delineated a prognostic model to identify different risk groups on the basis of clinical parameters. METHODS Patients who had bone metastasis at the time of diagnosis of gastric cancer (synchronous metastasis) or who developed bone metastasis during follow-up (metachronous metastasis) were retrospectively reviewed from January 1998 to May 2008. RESULTS Bone metastasis was identified in 203 (2.4%) of 8,633 patients: 126 patients (62%) with synchronous metastasis and 77 patients with metachronous metastasis. The median time to event was 16 months (range 4-87). As for treatment, 120 patients (59%) received systemic chemotherapy. The median survival time was 103 days (95% CI 80-126). Poor performance status [Eastern Cooperative Oncology Group 3-4; relative risk (RR) = 1.91, p = 0.011], multiple bone metastasis (RR = 2.593, p = 0.002), and abnormal carcinoembryonic antigen (RR = 1.779, p = 0.004) implied independent factors for survival. For patients who had zero to two of these factors identified, chemotherapy had a beneficial effect (175 vs. 43 days; p < 0.0001). CONCLUSION We recommend that the therapeutic approach with bone metastasis be customized to facilitate the risk stratification, so as to consequently provide the most appropriate therapy for each patient.
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Affiliation(s)
- Hyung Soon Park
- Department of Internal Medicine, Gangnam Severance Hospital, Seoul, Korea
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