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Ma X, Zhou W, Wang C, Miao W, Liu N, Wang S, Guan S. Clinicopathologic characteristics in patients with upper third gastric cancer following radical surgical treatment: A retrospective cohort study. Medicine (Baltimore) 2018; 97:e13017. [PMID: 30407293 PMCID: PMC6250511 DOI: 10.1097/md.0000000000013017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The incidences of upper third gastric cancer (UTGC) have been increasing. However, the prognostic factors for UTGC following radical surgical treatment remains largely unknown. This study was to investigate prognostic factors for overall survival (OS), lymph node metastasis and recurrence of UTGC.Clinicopathologic data of 126 UTGC patients who underwent radical surgical treatment were retrospectively analyzed. OS and univariate analysis were determined by Kaplan-Meier analysis and the significance of the difference between curves was calculated with the log-rank test. The Cox proportional hazards regression model was applied to perform multivariate analysis. Receiver operating characteristic (ROC) curve analysis was used to determine the prognostic accuracy.The 1-, 3-, and 5-year OS for patients with UTGC were 81%, 47.6%, and 38.6% respectively. Univariate analysis showed that tumor size (P = .019), tumor invasion depth (P < .001), and lymph node metastasis (P < .001) were the risk factors for 5-year OS. Multivariate analysis identified tumor invasion depth (P < .001) and lymph node metastasis (P < .001) as independent prognostic factors for the 5-year OS in patients with UTGC. In addition, ROC curve analysis showed that tumor invasion depth (P = .017) or lymph node metastasis (P = .001) alone showed significantly effective prognosis for the 5-year OS in patients with UTGC. For UTGC patients with lymph node metastasis, tumor size (P = .023), lym embolism (P = .003), tumor invasion depth (P = .002), and invasion of tunica serosa (P = .004) were the risk factors for the 5-year OS. Multivariate analysis identified tumor size (P = .048), lym embolism (P = .032), tumor invasion depth (P = .004), and invasion of tunica serosa (P = .031) as independent prognostic factors for the 5-year OS. For UTGC patients with distant metastasis or tumor recurrence, univariate and multivariate analyses demonstrated that tumor invasion depth and lymph node metastasis were independent prognostic factors for the 5-year OS.The results suggested that for UPGC patients undergoing the radical surgical treatment, tumor invasion depth and/or lymph node metastasis are the independent prognostic factors for the 5-year OS, lymph node metastasis, distant metastasis and tumor recurrence.
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Cheng L, Qiu L, Wang M, Zhang R, Sun M, Zhu X, Wang Y, Wei Q. Functional genetic variants of XRCC4 and ERCC1 predict survival of gastric cancer patients treated with chemotherapy by regulating the gene expression. Mol Carcinog 2017; 56:2706-2717. [PMID: 28796378 DOI: 10.1002/mc.22713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/19/2017] [Accepted: 08/08/2017] [Indexed: 12/17/2022]
Abstract
DNA repair protects genomic integrity and may modulate chemotherapy efficacy. Few large-scale studies have evaluated predictive roles of genetic variants of DNA repair genes in survival of Chinese gastric cancer (GCa) patients treated with chemotherapy. Here, we assessed the roles of 35 single nucleotide polymorphisms (SNPs) in DNA repair genes in survival of 1002 GCa patients, of whom 694 received chemotherapy and 308 did not. Among patients receiving chemotherapy, the ERCC1 rs2298881A allele was associated with a better survival [hazards ratio (HR) = 0.82, 95% confidence interval (CI) = 0.69-0.98; P = 0.03], whereas two XRCC4 SNPs were associated with a worse survival (HR = 1.26, 95% CI = 1.03-1.54 for the rs10040363G allele, P = 0.02; and HR = 1.30, 95% CI = 1.06-1.59 for the rs2075685T allele, P = 0.01). These three SNPs were unique survival predictors for patients treated with chemotherapy (P < 0.05 for all) but not for patients without chemotherapy (P > 0.05 for all), suggesting that they modulated chemotherapy efficacy. Patients who received chemotherapy and had haplotypes with at least one death-risk allele in XRCC4 had a poor survival, and the trend for an increase in the number of death-risk alleles adversely affecting the survival was also observed in an allelic dose-dependent manner (Ptrend = 0.001). Further functional analysis revealed that the death-risk alleles up-regulated the gene expression, leading to a worse survival as suggested by our meta-analysis pooling both mRNA microarray data from the GEO database and published data (ERCC1: HR = 1.31 [1.08-1.58]; P = 0.006). These functional genetic variants may independently or jointly affect survival in chemotherapy-treated GCa patients by modulating the gene expression in the tumors.
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Affiliation(s)
- Lei Cheng
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China
| | - Lixin Qiu
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Mengyun Wang
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China
| | - Ruoxin Zhang
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China
| | - Menghong Sun
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China.,Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xiaodong Zhu
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China.,Department of Medical Oncology, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China
| | - Yanong Wang
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China.,Department of Abdominal Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Qingyi Wei
- Cancer Institute, Collaborative Innovation Center for Cancer Medicine, Fudan University Shanghai Cancer Center, Xuhui, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Xuhui, Shanghai, China.,Duke Cancer Institute, Duke University Medical Center, and Department of Medicine, Duke University School of Medicine, Durham, North Carolina
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An J, Kang Q, Pan YM, Sun W, Wang X, Qi YJ. Clinical significance of HIF-1α expression in gastric malignant transformation in people from high altitude area of Qinghai. Shijie Huaren Xiaohua Zazhi 2017; 25:404-411. [DOI: 10.11569/wcjd.v25.i5.404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To detect the expression of hypoxia inducible factor-1α (HIF-1α) in gastric malignant transformation in people from high altitude area of Qinghai, China.
METHODS RT-PCR was used to detect the expression of HIF-1α gene in 7 cell lines and 27 pairs of GC and matched tumor adjacent normal gastric mucosa tissues. Using tissue microarray including 57 normal gastric mucosa tissues, 37 chronic atrophic gastritis tissues, 34 intestinal metaplasia tissues, and 146 gastric cancer (GC) tissues, immunohistochemistry (IHC) was performed to detect the level of HIF-1α protein expression.
RESULTS The expression of HIF-1α at the mRNA level was different in GC cell lines. HIF-1αexpression in AGS, SGC7901, and N87 cells was higher than that in MGC803, BGC823, PAMC82 and MKN45 cells. The level of HIF-1α expression was significantly higher in GC tissues (66.6%, 18/27) compared with normal gastric mucosa tissues (26.3%, 15/57; P < 0.001). IHC data showed that the positive rate of HIF-1α was 64.8% (24/37) in chronic atrophic gastritis tissues, 61.7% (21/34) in intestinal metaplasia tissues, and 56.8% (83/146) in GC tissues, all of which were significantly higher than that in normal tissues (26.3%, 15/57). Expression of HIF-1α was positively associated with age in GC (P < 0.05). Kaplan-Meier analysis showed that patients with a low level of HIF-1α had apparently better survival than those with a high level (P < 0.0001). HIF-1α protein (RR = 3.229, 95%CI: 2.024-5.151) was identified to be an independent risk factor for the outcome of GC patients.
CONCLUSION High HIF-1α expression is associated with gastric malignant transformation and poor prognosis in high altitude areas.
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Liu R, Huang M, Zhao X, Peng W, Sun S, Cao J, Ji D, Wang C, Guo W, Li J, Yin J, Zhu X. Neutropenia predicts better prognosis in patients with metastatic gastric cancer on a combined epirubicin, oxaliplatin and 5-fluorouracil regimen. Oncotarget 2016; 6:39018-27. [PMID: 26528696 PMCID: PMC4770753 DOI: 10.18632/oncotarget.5730] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 10/06/2015] [Indexed: 12/26/2022] Open
Abstract
Chemotherapy-induced neutropenia (CIN) reportedly indicated better prognosis for some cancers. We retrospectively analyzed 150 evaluable metastatic gastric cancer (MGC) patients who had received first-line EOF5 (combination regimen of epirubicin, oxaliplatin and 5-day continuous infusion of 5-fluorouracil) treatment. We divided patients into three groups according to the worst grade of CIN: absent group (grade 0), moderate group (grade 1–2) and severe group (grade 3–4). Multivariate analyses of overall survival (OS) proved moderate and severe CIN were important prognostic factors whether regarding CIN as a time-varying covariate (TVC) or not. Compared with absent CIN, hazard ratio (HR) for moderate and severe CIN were 0.31 (95% confidential interval (CI): 0.17–0.55; P < 0.001) and 0.36 (95% CI: 0.20–0.64; P = 0.001) respectively with TVC; and were 0.31 (95% CI: 0.17–0.56; P < 0.001) and 0.34 (95% CI: 0.19–0.61; P < 0.001) respectively without TVC. In progression-free survival (PFS) analyses, moderate and severe CIN showed similar results. In the landmark group (n = 122 patients) analyses with TVC, moderate and severe CIN remained prognostic factors for PFS, while only moderate CIN was prognostic factor for OS. CIN predicted longer OS and PFS in MGC patients treated with first-line EOF5 chemotherapy.
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Affiliation(s)
- Rujiao Liu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Mingzhu Huang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Xiaoying Zhao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Wei Peng
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Si Sun
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Jun Cao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Dongmei Ji
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Chenchen Wang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Weijian Guo
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Jin Li
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Jiliang Yin
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
| | - Xiaodong Zhu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, P.R. China
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Li F, Xie X, Ren X, Zhang J. A meta-analysis identifies ERCC1 gene polymorphism as a predictor of better patient response to treatment with radiochemotherapy. Cancer Chemother Pharmacol 2016; 77:1183-91. [PMID: 27100737 DOI: 10.1007/s00280-016-3015-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 03/16/2016] [Indexed: 10/21/2022]
Abstract
PURPOSE This meta-analysis aimed to evaluate whether an association exists between the ERCC1 rs11615 (C>T) polymorphism and patient response to platinum-based chemotherapy and radiation-based chemotherapy. METHODS Publications were selected from PubMed and MEDLINE. A meta-analysis was conducted to determine the association between genetic polymorphisms and response to platinum-based chemotherapy and radiation-based chemotherapy by checking the odds ratios (ORs) and 95 % confidence intervals (CIs). RESULTS In our overall analysis, the ERCC1 rs11615 (C>T) polymorphism was not associated with response to platinum-based chemotherapy in five comparison models. In the subgroup analyses by ethnicity, the ERCC1 rs11615 (C>T) polymorphism was shown to be significantly associated with objective response in Caucasian patients treated with platinum-based chemotherapy in the recessive model (TT vs. CT/CC OR 0.696, 95 % CI 0.508-0.954, heterogeneity = 0.330), but the association was not observed in the Asian population. The C allele was significantly associated with better response to radiochemotherapy in the recessive model comparison (TT vs. CC/CT OR 0.724, 95 % CI 0.585-0.869, heterogeneity = 0.008). Subgroup analysis by cancer type revealed that the C allele of ERCC1 rs11615 predicted a better response in esophageal cancers in two comparison models (T vs. C: OR 0.756, 95 % CI 0.648-0.880, heterogeneity = 0.653; TT vs. TC/CC OR 0.457, 95 % CI 0.306-0.684, heterogeneity = 0.723). Stratified analysis by ethnicity showed a better response in Caucasians in allelic comparison model (T vs. C: OR 0.895, 95 % CI 0.819-0.977, heterogeneity = 0.095). CONCLUSION Together, our results suggest that the ERCC1 rs11615 (C>T) polymorphism was associated with therapeutic response in Caucasian patients and C allele of ERCC1 rs11615 could represent a genetic molecular marker to predict better patient response to radiochemotherapy in recessive model. However, larger prospective randomized trials will be required.
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Affiliation(s)
- Fengying Li
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 Qing-chun East Road, Hangzhou, 310016, People's Republic of China
| | - Xinyou Xie
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 Qing-chun East Road, Hangzhou, 310016, People's Republic of China
| | - Xiaobin Ren
- Department of Prevention and Control of Infectious Diseases, Hangzhou Municipal Center for Disease Control and Prevention, 568 Mingshi Road, Hangzhou, 310021, People's Republic of China.
| | - Jun Zhang
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, 3 Qing-chun East Road, Hangzhou, 310016, People's Republic of China.
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Ma SC, Zhao Y, Zhang T, Ling XL, Zhao D. Association between the ERCC1 rs11615 polymorphism and clinical outcomes of oxaliplatin-based chemotherapies in gastrointestinal cancer: a meta-analysis. Onco Targets Ther 2015; 8:641-8. [PMID: 25834456 PMCID: PMC4365759 DOI: 10.2147/ott.s80913] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Purpose The relationship between the excision repair cross-complementing 1 (ERCC1) rs11615 polymorphism (C/T) and responses to oxaliplatin-based chemotherapy for gastric cancer (GC) and colorectal cancer (CRC) patients is controversial. Therefore, we performed a meta-analysis to assess this relationship. Method Relevant studies were retrieved by searching the PubMed database. A systematic review and meta-analysis was performed to evaluate the predictive value of the ERCC1 rs11615 polymorphism for the clinical outcomes of GC and CRC patients receiving oxaliplatin-based chemotherapy. Therapeutic response to chemotherapy, progression-free survival (PFS), and overall survival (OS) were analyzed. Results A total of 22 studies were included in this meta-analysis, including 1,242 cases of GC and 1,772 cases of CRC. For the ERCC1 rs11615 polymorphism, the T allele was associated with a reduced response to chemotherapy in Asians and GC patients (P<0.05). On the other hand, the T allele was associated with a significant increase in the risk for shorter PFS and OS in all patients (PFS: hazard ratio [HR] =1.22, P<0.001, 95% confidence interval [CI] =0.93–1.51 and OS: HR =1.12, P<0.001, 95% CI =0.85–1.40). Conclusion The ERCC1 rs11615 polymorphism was closely associated with the clinical outcomes of GC and CRC patients treated with oxaliplatin-based chemotherapy.
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Affiliation(s)
- Shou-Cheng Ma
- Department of Oncology, The First Hospital of Lanzhou University (The Branch Hospital of Donggang), Lanzhou, Gansu Province, People's Republic of China
| | - Yue Zhao
- Department of Gastroenterology, The First Hospital of Lanzhou University (The Branch Hospital of Donggang), Lanzhou, Gansu Province, People's Republic of China
| | - Tao Zhang
- Department of Oncology, The First Hospital of Lanzhou University (The Branch Hospital of Donggang), Lanzhou, Gansu Province, People's Republic of China
| | - Xiao-Ling Ling
- Department of Oncology, The First Hospital of Lanzhou University (The Branch Hospital of Donggang), Lanzhou, Gansu Province, People's Republic of China
| | - Da Zhao
- Department of Oncology, The First Hospital of Lanzhou University (The Branch Hospital of Donggang), Lanzhou, Gansu Province, People's Republic of China
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Song P, Yin Q, Lu M, Fu BO, Wang B, Zhao Q. Prognostic value of excision repair cross-complementation group 1 expression in gastric cancer: A meta-analysis. Exp Ther Med 2015; 9:1393-1400. [PMID: 25780441 PMCID: PMC4353740 DOI: 10.3892/etm.2015.2284] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 01/14/2015] [Indexed: 12/22/2022] Open
Abstract
The prognostic impact of excision repair cross-complementation group 1 (ERCC1) expression in gastric cancer (GC) has been investigated for decades, but has yielded controversial results. The aim of the present study was to provide a precise evaluation of whether the expression levels of ERCC1 are associated with overall survival (OS) in patients with GC. A systematic search of Medline and Embase was conducted. Original studies concerning OS and ERCC1 expression were included for critical appraisal. A total of 15 studies comprising 1,425 patients with GC were identified. The results revealed that high/positive ERCC1 expression was an indicator of poor survival in patients with GC [hazard ratio (HR) 1.48; 95% confidence interval (CI) 1.02–2.10; P=0.036; I2=83.8%; random-effects model] compared with low/negative ERCC1 expression. Subgroup analysis indicated that high/positive ERCC1 expression had a significant unfavorable impact on OS in the group of patients evaluated by reverse transcription polymerase chain reaction (RT-PCR; HR 2.57; 95% CI 1.49–4.45). Furthermore, high/positive ERCC1 expression was found to be associated with poor survival in patients receiving platinum-based chemotherapy in the RT-PCR group (HR 2.13; 95% CI 1.06–4.27). These data suggest that ERCC1 may be a useful prognostic factor for GC. In addition, low mRNA levels of ERCC1 appear to be associated with a significant favorable OS benefit from platinum-based chemotherapy.
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Affiliation(s)
- Peng Song
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, P.R. China
| | - Qin Yin
- Medical Center of Pediatrics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, P.R. China
| | - Ming Lu
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, P.R. China
| | - B O Fu
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, P.R. China
| | - Baolin Wang
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, P.R. China
| | - Qinghong Zhao
- Department of General Surgery, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, P.R. China
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Wei KK, Jiang L, Wei YY, Wang YF, Qian XK, Dai Q, Guan QL. The prognostic value of ERCC1 expression in gastric cancer patients treated with platinum-based chemotherapy: a meta-analysis. Tumour Biol 2014; 35:8721-31. [PMID: 24870596 DOI: 10.1007/s13277-014-2128-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 05/20/2014] [Indexed: 01/03/2023] Open
Abstract
Numerous studies examined the association between excision repair complementation group 1 (ERCC1) expression and the prognosis of gastric cancer patients receiving platinum-based chemotherapy but yielded controversial results. We thus conducted a meta-analysis to quantitatively evaluate the prognostic value of ERCC1 expression in gastric cancer patients receiving platinum-based chemotherapy. A systematic literature search was performed to identify relevant studies in PubMed, Web of Science, Embase, Cochrane Library, China National Knowledge Infrastructure, Chinese Biomedical Literature Database, and WanFang Database up to December 17, 2013. Pooled hazard ratios (HRs) or odds ratios (ORs) with 95 % confidence intervals (CIs) were estimated. Moreover, meta-regression analysis and subgroup analysis were conducted according to ethnicity, HR extraction, detection methods, survival analysis, and quality score. A total of 1,409 patients from 21 studies were subjected to final analysis. Positive/high ERCC1 expression was significantly associated with poorer overall survival (HR, 1.58; 95 % CI, 1.09-2.28), especially in Asians (HR, 1.81; 95 % CI, 1.20-2.73), and lower response rate (OR, 0.26; 95 % CI, 0.18-0.36), but not with clinicopathological features, such as gender (OR, 1.01; 95 % CI, 0.68-1.51), grade (OR, 0.66; 95 % CI, 0.43-1.01), and stage (OR, 1.05; 95 % CI, 0.58-1.90). This meta-analysis suggested that ERCC1 expression might be a useful biomarker to predict response and survival for gastric cancer patients receiving platinum-based chemotherapy, particularly in Asians.
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Affiliation(s)
- Kong-Kong Wei
- The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, China
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