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Peri-operative Outcomes and Survival Following Palliative Gastrectomy for Gastric Cancer: a Systematic Review and Meta-analysis. J Gastrointest Cancer 2020; 52:41-56. [PMID: 32959118 PMCID: PMC7900337 DOI: 10.1007/s12029-020-00519-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND Many patients with gastric cancer present with late stage disease. Palliative gastrectomy remains a contentious intervention aiming to debulk tumour and prevent or treat complications such as gastric outlet obstruction, perforation and bleeding. METHODS We conducted a systematic review of the literature for all papers describing palliative resections for gastric cancer and reporting peri-operative or survival outcomes. Data from peri-operative and survival outcomes were meta-analysed using random effects modelling. Survival data from patients undergoing palliative resections, non-resective surgery and palliative chemotherapy were also combined. This study was registered with the PROSPERO database (CRD42019159136). RESULTS One hundred and twenty-eight papers which included 58,675 patients contributed data. At 1 year, there was a significantly improved survival in patients who underwent palliative gastrectomy when compared to non-resectional surgery and no treatment. At 2 years following treatment, palliative gastrectomy was associated with significantly improved survival compared to chemotherapy only; however, there was no significant improvement in survival compared to patients who underwent non-resectional surgery after 1 year. Palliative resections were associated with higher rates of overall complications versus non-resectional surgery (OR 2.14; 95% CI, 1.34, 3.46; p < 0.001). However, palliative resections were associated with similar peri-operative mortality rates to non-resectional surgery. CONCLUSION Palliative gastrectomy is associated with a small improvement in survival at 1 year when compared to non-resectional surgery and chemotherapy. However, at 2 and 3 years following treatment, survival benefits are less clear. Any survival benefits come at the expense of increased major and overall complications.
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LncRNA E2F-Mediated Cell Proliferation Enhancing lncRNA Regulates Cancer Cell Behaviors and Affects Prognosis of Gastric Cancer. Dig Dis Sci 2020; 65:1348-1354. [PMID: 31584135 DOI: 10.1007/s10620-019-05855-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 09/18/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND A recent study reported a novel long non-coding RNA (lncRNA) E2F-mediated cell proliferation enhancing lncRNA (EPEL, human chromosome 4, intergenic region) plays an oncogenic role in lung cancer. AIMS We aimed to investigate the role of lncRNA EPEL in gastric cancer. METHODS Gene expression was analyzed by RT-qPCR and western blot. Survival analysis was performed by comparing survival curves. Cell proliferation, migration, and invasion were analyzed by CCK-8 and Transwell assays. RESULTS We found that lncRNA EPEL and Runt-related transcription factor 2 (RUNX2) were both upregulated in gastric cancer. EPEL and RUNX2 were positively correlated in tumor. Patients with high expression level of lncRNA EPEL showed poor survival. LncRNA EPEL and RUNX2 overexpression promoted, while lncRNA EPEL siRNA silencing inhibited the migration, proliferation, and invasion of gastric cancers. In addition, RUNX2 overexpression completely rescued the inhibited cancer cell migration, proliferation, and invasion caused by lncRNA EPEL siRNA silencing. Consistently, EPEL overexpression resulted in upregulated RUNX2 expression, while RUNX2 overexpression did not affect lncRNA EPEL expression. CONCLUSIONS Therefore, lncRNA EPEL may regulate cancer cell behaviors and affect prognosis of gastric cancer by interacting with RUNX2.
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Bartelli TF, Senda de Abrantes LL, Freitas HC, Thomas AM, Silva JM, Albuquerque GE, Araújo LF, Branco GP, de Amorim MG, Serpa MS, Takenaka IKTM, Souza DT, Monção LO, Moda BS, Valieris R, Defelicibus A, Borges R, Drummond RD, Alves FIA, Santos MNP, Bobrovnitchaia IG, Elhaik E, Coelho LGV, Khayat A, Demachki S, Assumpção PP, Santiago KM, Torrezan GT, Carraro DM, Peres SV, Calsavara VF, Burbano R, Nóbrega CR, Baladão GPP, Pereira ACC, Gatti CM, Fagundes MA, Araújo MS, Miranda TV, Barbosa MS, Cardoso DMM, Carneiro LC, Brito AM, Ramos AFPL, Silva LLL, Pontes JC, Tiengo T, Arantes PE, Santana V, Cordeiro M, Sant’Ana RO, Andrade HB, Anaissi AKM, Sampaio SV, Abdallah EA, Chinen LTD, Braun AC, Flores BCT, Mello CAL, Claro LCL, Sztokfisz CZ, Altamirano CC, Carter DRF, Jesus VHF, Riechelmann R, Medina T, Gollob KJ, Martins VR, Setúbal JC, Pelosof AG, Coimbra FJ, Costa-Jr WL, Silva IT, Nunes DN, Curado MP, Dias-Neto E. Genomics and epidemiology for gastric adenocarcinomas (GE4GAC): a Brazilian initiative to study gastric cancer. ACTA ACUST UNITED AC 2019. [DOI: 10.1186/s41241-019-0081-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
Gastric cancer (GC) is the fifth most common type of cancer worldwide with high incidences in Asia, Central, and South American countries. This patchy distribution means that GC studies are neglected by large research centers from developed countries. The need for further understanding of this complex disease, including the local importance of epidemiological factors and the rich ancestral admixture found in Brazil, stimulated the implementation of the GE4GAC project. GE4GAC aims to embrace epidemiological, clinical, molecular and microbiological data from Brazilian controls and patients with malignant and pre-malignant gastric disease. In this letter, we summarize the main goals of the project, including subject and sample accrual and current findings.
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