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Realis Luc M, Bonomi AM, Carbone F, Ascari F, de Pascale S, Fumagalli Romario U. Roux-en-Y with or without jejunal J-pouch reconstruction after total gastrectomy for gastric cancer: systematic review and meta-analysis of long-term functional outcomes. J Gastrointest Surg 2024; 28:291-300. [PMID: 38445924 DOI: 10.1016/j.gassur.2023.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 12/16/2023] [Indexed: 03/07/2024]
Abstract
BACKGROUND Increased survival of patients undergoing total gastrectomy for gastric cancer has prompted several efforts to improve long-term postgastrectomy syndrome (PGS) outcomes. Whether a J-pouch (JP) reconstruction may be more beneficial than a standard Roux-en-Y (RY) is controversial. METHODS A systematic review with meta-analysis was conducted, including studies reporting long-term outcomes of patients treated with total gastrectomy and JP vs RY esophagojejunostomy for gastric adenocarcinoma. A literature search was performed on PubMed, Scopus, and Google Scholar. Primary endpoints were symptom control, weight loss, eating capacity (EC), and quality of life (QoL) with at least 6 months of follow-up. Safety endpoints were explored. RESULTS Overall, 892 patients were included from 15 studies (6 randomized controlled trials [RCTs] and 9 non-RCTs): 452 (50.7%) in the JP group and 440 (49.3%) in the RY group. Compared with RY, JP showed a significantly lower rate of dumping syndrome (13.8% vs 26.9%, odds ratio [OR], 0.29; 95% confidence interval [CI], 0.14-0.58; P < .001; I2 = 22%) and heartburn symptoms (20.4% vs 39.0%; OR, 0.29; 95% CI, 0.14-0.64; P = .002; I2 = 0%). Reflux (OR, 0.61; 95% CI, 0.28-1.32; P = .21; I2 = 42%) and epigastric fullness (OR, 0.60; 95% CI, 0.18-2.05; P = .41; I2 = 69%) were similar in both groups. Weight loss and EC were similar between the groups. QoL outcome seemed to be burdened by bias. There was no difference in morbidity, mortality, and anastomotic leak rate between groups. Operative time was significantly longer for JP than for RY (271.9 vs 251.6 minutes, respectively; mean difference, 21.55; 95% CI, 4.64-38.47; P = .01; I2 = 96%). CONCLUSION JP reconstruction after total gastrectomy for gastric cancer is as safe as RY and may provide an advantage in postgastrectomy dumping syndrome and heartburn symptoms.
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Affiliation(s)
- Marco Realis Luc
- Digestive Surgery, European Institute of Oncology IRCCS, Milan, Italy; University of Milan, Milan, Italy
| | - Alessandro Michele Bonomi
- Digestive Surgery, European Institute of Oncology IRCCS, Milan, Italy; University of Milan, Milan, Italy
| | - Fabio Carbone
- Digestive Surgery, European Institute of Oncology IRCCS, Milan, Italy.
| | - Filippo Ascari
- Digestive Surgery, European Institute of Oncology IRCCS, Milan, Italy
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Plum PS, Barutcu AG, Pamuk A, Mallmann C, Chon SH, Chiapponi C, Dübbers M, Hellmich M, Moenig SP, Quaas A, Hoelscher AH, Bruns CJ, Alakus H. Extension of resection after positive intraoperative pathology during surgery for gastric and gastroesophageal junction adenocarcinoma: a retrospective cohort study. Int J Surg 2023; 109:2324-2333. [PMID: 37222663 PMCID: PMC10442120 DOI: 10.1097/js9.0000000000000484] [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: 12/27/2022] [Accepted: 05/09/2023] [Indexed: 05/25/2023]
Abstract
BACKGROUND Residual tumor at the resection margins after surgery for gastric and gastroesophageal junction (GEJ) adenocarcinoma is a known prognostic factor. In this single-center, retrospective cohort study in a tertiary referral center, the authors aimed to evaluate the relevance of intraoperative pathology consultation (IOC) and consecutive extension of surgery on patient survival. STUDY DESIGN Of 737 consecutive patients undergoing (sub)total gastrectomy for gastric or GEJ adenocarcinoma, 679 cases with curative intent surgery between 05/1996 and 03/2019 were included. Patients were categorized into: R0 without further resection (direct R0), R0 after positive IOC and extension of resection (converted R0), and R1. RESULTS IOC was performed in 242 (35.6%) patients, in 216 (89.3%) at the proximal resection margin. Direct R0-status was achieved in 598 (88.1%), converted R0 in 26 (3.8%) of 38 (5.6%) patients with positive IOC and R1 in 55 (8.1%) patients. The median follow-up was 29 months for surviving patients. 3-year survival rate (3-YSR) was significantly higher for direct R0 compared to converted R0 with 62.3% compared to 21.8% (hazard ratio=0.298; 95% CI=0.186-0.477, P <0.001). 3-YSR was similar between converted R0 and R1 (21.8 vs. 13.3%; hazard ratio =0.928; 95% CI=0.526-1.636, P =0.792). In multivariate analysis, advanced T ( P <0.001), N ( P <0.001), R ( P =0.003), and M1 status ( P <0.001) were associated with worse overall survival. CONCLUSION IOC and consecutive extended resection for positive resection margins in gastrectomy for the proximal gastric and GEJ adenocarcinoma does not achieve long-term survival benefits in advanced tumor stages.
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Affiliation(s)
- Patrick S. Plum
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
- Gastrointestinal Cancer Group Cologne, Cologne, Germany
- Department of Visceral, Transplant, Thoracic and Vascular Surgery, University Hospital Leipzig, Leipzig
| | - Atakan G. Barutcu
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Aylin Pamuk
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Christoph Mallmann
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Seung-Hun Chon
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Costanza Chiapponi
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Martin Dübbers
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Martin Hellmich
- Institute for Medical Statistics and Computational Biology, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Stefan P. Moenig
- Service de chirurgie viscéral, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Alexander Quaas
- Gastrointestinal Cancer Group Cologne, Cologne, Germany
- Institute of Pathology, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
| | - Arnulf H. Hoelscher
- Germany Center for Esophageal Diseases, Elisabethkrankenhaus Essen Essen, Germany
| | - Christiane J. Bruns
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
- Gastrointestinal Cancer Group Cologne, Cologne, Germany
| | - Hakan Alakus
- Department of General, Visceral, Cancer and Transplantat Surgery, Faculty of Medicine, University Hospital of Cologne, Cologne, Germany
- Gastrointestinal Cancer Group Cologne, Cologne, Germany
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Sun Y, Li Z, Tian Y, Gao C, Liang B, Cao S, Liu X, Liu X, Meng C, Xu J, Yang H, Zhou Y. Development and validation of nomograms for predicting overall survival and cancer-specific survival in elderly patients with locally advanced gastric cancer: a population-based study. BMC Gastroenterol 2023; 23:117. [PMID: 37041468 PMCID: PMC10091668 DOI: 10.1186/s12876-023-02749-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 03/28/2023] [Indexed: 04/13/2023] Open
Abstract
OBJECTIVE To evaluate the multiple factors influencing the survival of elderly patients with locally advanced gastric cancer (LAGC) and develop and validate the novel nomograms for predicting the survival. METHODS The clinical features of patients treated between 2000 and 2018 were collected and collated from the Surveillance, Epidemiology, and End Results (SEER) database and three medical centres in China, and the patients were randomly divided into a training cohort (3494), internal validation cohort (1497) and external validation cohort (841). Univariate and multivariate analyses of the prognostic values were performed to identify independent prognostic factors associated with overall survival (OS) and cancer-specific survival (CSS), and two nomogram models were developed. Harrell's concordance index (C-index) and calibration curves were employed to assess discrimination and calibration. Decision curve analysis (DCA) and receiver-operating characteristic (ROC) curves were utilized to investigate the clinical usefulness. RESULTS In the SEER database, the 5-year OS of the patients was 31.08%, while the 5-year CSS of the patients was 44.09%. Furthermore, in the external validation set, the 5-year OS of the patients was 49.58%, and the 5-year CSS of these patients was 53.51%. After statistical analysis, nine independent prognostic factors of OS and CSS were identified, including age, race, tumour size, differentiation, TNM stage, gastrectomy type, lymph node metastasis (LNM), lymph node ratio (LNR) and chemotherapy. The C-index (approximately 0.7) and calibration curve (close to the optimal calibration line) indicated satisfactory discrimination and calibration of the nomogram. DCA and ROC curves showed that the developed nomogram was superior to TNM stage. CONCLUSION The novel validated nomogram could accurately predict the prognosis of individual elderly patients with LAGC and guide the selection of clinical treatment measures.
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Affiliation(s)
- Yuqi Sun
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Zequn Li
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Yulong Tian
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Chao Gao
- Qilu Hospital of Shandong University, Jinan, Shandong Province, China
| | - Benjia Liang
- Shandong Provincial Hospital, Jinan, Shandong Province, China
| | - Shougen Cao
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Xiaodong Liu
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Xuechao Liu
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Cheng Meng
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Jianfei Xu
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Hao Yang
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Yanbing Zhou
- Department of General Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
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Zhang N, Wang D, Hu X, Zhang G, Li Z, Zhao Y, Liu Z, Wang Y. Analysis of immune status in gastric adenocarcinoma with different infiltrating patterns and origin sites. Front Immunol 2022; 13:978715. [PMID: 36081505 PMCID: PMC9445833 DOI: 10.3389/fimmu.2022.978715] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 07/27/2022] [Indexed: 12/03/2022] Open
Abstract
Tumor infiltration pattern (INF) and tumor origin site were reported to significantly affect the prognosis of gastric cancer (GC), while the immune status under these contexts is not clear. In this study, we correlated the density and phenotype of tumor-infiltrating lymphocytes (TILs) with INF and the tumor origin site to reflect the biological behavior of tumors from a new perspective and also determined their effects on overall survival (OS) and other related clinicopathological features in archival samples of 147 gastric cancers with 10-year follow-up data. We found that the INFc growth pattern (an invasive growth without a distinct border) of GC lacked immune cell infiltration, particularly the cytotoxic T cells and their activated form. It is also significantly associated with an unfavorable prognosis (P < 0.001) and proximal site (P = 0.001), positive lymph node metastasis (P = 0.002), and later tumor–node–metastasis stage (P < 0.001). Moreover, the density and sub-type of TILs infiltration were significantly different in disparate differentiated areas for the tumor tissue with INFb. Compared with distal gastric cancer, proximal gastric cancers were prone to grow in an INFc pattern (P = 0.001) and infiltrated with fewer TILs, experiencing a shorter survival time (P = 0.013). Multivariate analysis showed that only the INF and the density of TILs were demonstrated to be the independent prognostic factors of OS for the GC. We concluded that GC with an aggressive growth pattern arising from proximal sites always had a weak immune response and resulted in a poor prognosis. The interaction between them and their synergistic or antagonistic effects in the development of tumors need to be further studied. This study opens up a new perspective for research on the biological behavior of the tumor.
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Affiliation(s)
- Nana Zhang
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Institute for Cancer Research, School of Basic Medical Science, Health Science Center of Xi’an Jiaotong University, Xian, China
| | - Depu Wang
- Institute for Cancer Research, School of Basic Medical Science, Health Science Center of Xi’an Jiaotong University, Xian, China
- Department of Science and Technology, The First Affiliated Hospital of Xi’an Jiaotong University, Xian, China
| | - Xiaoyan Hu
- Institute for Cancer Research, School of Basic Medical Science, Health Science Center of Xi’an Jiaotong University, Xian, China
| | - Guanjun Zhang
- Institute for Cancer Research, School of Basic Medical Science, Health Science Center of Xi’an Jiaotong University, Xian, China
- Department of Pathology, The First Affiliated Hospital of Xi’an Jiaotong University, Xian, China
| | - Zhuoqun Li
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yan Zhao
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Zhijun Liu
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Zhijun Liu, ; Yili Wang,
| | - Yili Wang
- Institute of Regenerative and Reconstructive Medicine, Med-X Institute, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Institute for Cancer Research, School of Basic Medical Science, Health Science Center of Xi’an Jiaotong University, Xian, China
- *Correspondence: Zhijun Liu, ; Yili Wang,
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Yang H, Ji X, Jin C, Ji K, Jia Z, Wu X, Zhang J, Bu Z. A Practical Nomogram for Predicting the Prognosis of Elderly Patients with Gastric Adenocarcinoma After Gastrectomy. Int J Gen Med 2022; 15:473-488. [PMID: 35046708 PMCID: PMC8760985 DOI: 10.2147/ijgm.s343306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 12/22/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose To establish a pragmatic prognostic nomogram for predicting the survival of elderly patients undergoing gastrectomy for gastric adenocarcinoma. Patients and Methods Data of elderly patients undergoing gastrectomy for gastric adenocarcinoma between 2004 and 2015 were obtained from the Surveillance, Epidemiology, and End Results database. Prognostic factors were identified by the Kaplan–Meier method and the Cox proportional hazards model. Based on these factors, we developed a nomogram to predict the overall survival (OS) and gastric cancer-specific survival (GCSS). Concordance index (C-index) and calibration curve are employed to assess the predictive accuracy of the model. Decision curve analysis (DCA) and receiver operating characteristic curve (ROC) analysis are applied to further appraise the clinical utility of the model. Results A total of 8401 cases were incorporated into this research. After univariate and multivariate analyses, nine prognostic factors of OS were identified, including age (P < 0.001), race (P < 0.001), marital status (P < 0.001), tumor site (P < 0.001), tumor size (P = 0.024), differentiation (P < 0.001), T stage (P < 0.001), N stage (P < 0.001), and M stage (P < 0.001); ten prognostic factors of GCSS were identified, including age (P < 0.001), race (P < 0.001), tumor site (P < 0.001), tumor size (P = 0.002), differentiation (P < 0.001), T stage (P < 0.001), N stage (P < 0.001), M stage (P < 0.001), radiotherapy (P < 0.001) and chemotherapy (P < 0.001). The C-index of the constructed nomogram for OS was 0.708 (95% CI: 0.701–0.715) while for GCSS was 0.745 (95% CI: 0.737–0.753). The calibration curves of the nomogram predictions and actual observations displayed good agreement for the 3- and 5-year OS and GCSS probabilities. The results of DCA and the area under the curve calculated by ROC analysis showed that the developed model was superior than TNM stage. Conclusion The nomogram we established could accurately predict the prognosis of individual elderly patients who underwent gastrectomy for gastric adenocarcinoma.
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Affiliation(s)
- Heli Yang
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
- Correspondence: Heli Yang Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, 100142, People’s Republic of ChinaTel/Fax +86-10-88196970 Email
| | - Xin Ji
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
| | - Chenggen Jin
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
| | - Ke Ji
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
| | - Ziyu Jia
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
| | - Xiaojiang Wu
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
| | - Ji Zhang
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
| | - Zhaode Bu
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People’s Republic of China
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The jury is still out on peri-operative vs. adjuvant chemotherapy for distal gastric cancer. Am J Surg 2021; 223:1053-1054. [PMID: 34952685 DOI: 10.1016/j.amjsurg.2021.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/11/2021] [Accepted: 12/12/2021] [Indexed: 12/12/2022]
Abstract
Randomized control trials have established systemic therapy as an integral part of treatment for gastric cancer, but the ideal sequence of surgery and chemotherapy is not known. In the West, peri-operative chemotherapy (based on MAGIC and FLOT4 trials) is the standard of care vs. in the East, D2 gastrectomy followed by adjuvant chemoradiation (based on ARTIST trial) or adjuvant chemotherapy (based on S-1 and CLASSIC trials) is more common. In this issue, Singh et al. ask if perioperative chemotherapy or adjuvant chemotherapy portends a survival advantage specifically for patients with resectable distal gastric cancer who underwent D2 lymphadenectomy.1.
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The effect of Helicobacter pylori eradication on prognosis of postoperative early gastric cancer: a multicenter study. World J Surg Oncol 2021; 19:285. [PMID: 34548086 PMCID: PMC8456575 DOI: 10.1186/s12957-021-02343-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 07/23/2021] [Indexed: 12/15/2022] Open
Abstract
Objective To investigate the effect of Helicobacter pylori (H. pylori) eradication on the prognosis of postoperative early gastric cancer (EGC). Methods This is a retrospective study based on data from 6 hospitals. We identified 429 patients with EGC who underwent curative gastrectomy from January 2010 to December 2016. All of the patients were tested for H. pylori. Patients were divided into two groups, the successful H. pylori eradication group (group A, 268 patients) and the non-H. pylori eradication group (group B, 161 patients), for calculating the disease-free survival (DFS) and overall survival (OS) of each group. Result Positive node metastasis (hazard ratio (HR), 3.13; 95% confidence interval (CI), 1.84–5.32; P < 0.001), undifferentiated type (HR, 2.54; 95% CI, 1.51–4.28; P < 0.001), and non-H. pylori eradication (HR, 1.73; 95% CI, 1.08–2.77; P = 0.023) were statistically significantly independent risk factors of recurrence. Patient’s age ≥60 years old (HR, 3.32; 95% CI, 2.00–5.53; P < 0.001), positive node metastasis (HR, 3.71; 95% CI, 2.25–6.12; P < 0.001), undifferentiated type (HR, 3.06; 95% CI, 1.79–5.23; P < 0.001), and non-H. pylori eradication (HR, 1.83; 95% CI, 1.11–3.02; P = 0.018) were statistically significantly independent risk factors of overall survival. Conclusion H. pylori eradication treatment could prevent the recurrence of postoperative EGC to prolong the overall survival of patients with EGC.
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Song W, Bai Y, Zhu J, Zeng F, Yang C, Hu B, Sun M, Li C, Peng S, Chen M, Sun X. A novel prognostic model based on epithelial-mesenchymal transition-related genes predicts patient survival in gastric cancer. World J Surg Oncol 2021; 19:216. [PMID: 34281542 PMCID: PMC8290588 DOI: 10.1186/s12957-021-02329-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 07/08/2021] [Indexed: 02/08/2023] Open
Abstract
Background Gastric cancer (GC) represents a major malignancy and is the third deathliest cancer globally. Several lines of evidence indicate that the epithelial-mesenchymal transition (EMT) has a critical function in the development of gastric cancer. Although plentiful molecular biomarkers have been identified, a precise risk model is still necessary to help doctors determine patient prognosis in GC. Methods Gene expression data and clinical information for GC were acquired from The Cancer Genome Atlas (TCGA) database and 200 EMT-related genes (ERGs) from the Molecular Signatures Database (MSigDB). Then, ERGs correlated with patient prognosis in GC were assessed by univariable and multivariable Cox regression analyses. Next, a risk score formula was established for evaluating patient outcome in GC and validated by survival and ROC curves. In addition, Kaplan-Meier curves were generated to assess the associations of the clinicopathological data with prognosis. And a cohort from the Gene Expression Omnibus (GEO) database was used for validation. Results Six EMT-related genes, including CDH6, COL5A2, ITGAV, MATN3, PLOD2, and POSTN, were identified. Based on the risk model, GC patients were assigned to the high- and low-risk groups. The results revealed that the model had good performance in predicting patient prognosis in GC. Conclusions We constructed a prognosis risk model for GC. Then, we verified the performance of the model, which may help doctors predict patient prognosis.
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Affiliation(s)
- Wanting Song
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yi Bai
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jialin Zhu
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Fanxin Zeng
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chunmeng Yang
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Beibei Hu
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Mingjun Sun
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.,Department of Gastrointestinal Endoscopy, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Chenyan Li
- Department of Endocrinology and Metabolism, First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shiqiao Peng
- Department of Endocrinology and Metabolism, First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Moye Chen
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Xuren Sun
- Department of Gastroenterology, First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
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