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He Z.,Sun Yat Sen University | He Z.,Guangdong Esophageal Cancer Research Institute | Wu S.,Xiamen University | Li Q.,Sun Yat Sen University | And 4 more authors.
PLoS ONE | Year: 2013

Objectives:The objective of this study was to investigate the number of metastatic lymph nodes (pN) and the metastatic lymph node ratio (MLR) on the post-surgical prognosis of Chinese patients with esophageal cancer (EC) and lymph node metastasis.Methods:We enrolled 353 patients who received primary curative resection for EC from 1990 to 2003. The association of pN and MLR with 5-year overall survival (OS) was examined by receiver operating characteristic (ROC) and area under the curve (AUC) analysis. The Kaplan-Meier method was used to calculate survival rates, and survival curves were compared with the log-rank test. The Cox model was employed for univariate and multivariate analyses of factors associated with 5-year OS.Results:The median follow-up time was 41 months, and the 1-, 3- and 5-year OS rates were 71.2%, 30.4%, and 19.5%, respectively. Univariate analysis showed that age, pN stage, and the MLR were prognostic factors for OS. Patients with MLRs less than 0.15, MLRs of 0.15-0.30, and MLRs greater than 0.30 had 5-year OS rates of 30.1%, 17.8%, and 9.5%, respectively (p < 0.001). Patients classified as pN1, pN2, and pN3 had 5-year OS rates of 23.7%, 11.4%, and 9.9%, respectively (p < 0.001). Multivariate analysis indicated that a high MLR and advanced age were significant and independent risk factors for poor OS. Patients classified as pN2 had significantly worse OS than those classified as pN1 (p = 0.022), but those classified as pN3 had similar OS as those classified as pN1 (p = 0.166). ROC analysis indicated that MLR (AUC = 0.585, p = 0.016) had better predictive value than pN (AUC = 0.565, p = 0.068).Conclusions:The integrated use of MLR and pN may be suitable for evaluation of OS in Chinese patients with EC and positive nodal metastasis after curative resection. © 2013 He et al.

Duan H.,Sun Yat Sen University | Zhang X.,Sun Yat Sen University | Wang F.-X.,Sun Yat Sen University | Cai M.-Y.,Sun Yat Sen University | And 10 more authors.
World Journal of Gastroenterology | Year: 2015

AIM: To determine the prognostic significance of preoperative serum neutrophil-lymphocyte ratio (NLR) in esophageal squamous cell carcinoma (ESCC). METHODS: Data from 371 eligible patients with ESCC who had undergone surgery with curative intent at our institution between October 2000 and May 2007 were retrospectively recruited for analysis. The cutoff value of NLR was 3.0 as determined by the receiver operating characteristic curve, which discriminated between survival and death; the area under the curve was 0.709, and the sensitivity and specificity were 66.1% and 69.1%, respectively, at the cutoff point. The correlation between the NLR and clinicopathological characteristics was analyzed using a χ 2 test. The prognostic influence of the NLR and other clinicopathological factors on cancer-specific survival (CSS) and recurrence-free survival (RFS) was studied using the Kaplan-Meier method. To evaluate the independent prognostic value of NLR, multivariate Cox regression models were applied. RESULTS: The median age of the patients was 57.0 years, and 276/371 (74.4%) patients were male. The NLR was ≤ 3.0 in 80.1% (297/371) of the patients, and the remaining 19.9% (74/371) had an NLR > 3.0. Median postoperative follow-up was 66.0 mo [interquartile range (IQR): 49.0-76.0 mo], with a follow-up rate of 94%. Follow-up was not significantly different between patients with an NLR ≤ and > 3.0 (63.13 ± 1.64 vs 61.52 ± 3.66, P = 0.711). However, higher preoperative serum NLR was associated with significantly increased risks of higher pathological tumor status (P = 0.007). A significant, independent association between high preoperative serum NLR and poor clinical outcome was identified in a multivariate analysis for CSS (HR = 1.591; P = 0.007) and RFS (HR = 1.525; P = 0.013). Moreover, when patients were stratified by pathological tumor-node-metastasis (TNM) staging, the adverse effects of preoperative serum NLR on CSS (HR = 2.294; P = 0.008) and RFS (HR = 2.273; P = 0.008) were greatest in those patients with stage IIIA disease. CONCLUSION: Preoperative serum NLR is a useful prognostic marker to complement TNM staging for operable ESCC patients, particularly in patients with stage IIIA disease. © The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.

Wang X.-S.,Zhengzhou University | Luo K.-J.,Sun Yat Sen University | Luo K.-J.,Guangzhou University | Luo K.-J.,Guangdong Esophageal Cancer Research Institute | And 13 more authors.
World Journal of Gastroenterology | Year: 2014

AIM: To assess whether differential expression of caspase- 3 in paired metastatic lymph nodes (LNs) is prognostic of survival in patients with resectable esophageal squamous cell carcinoma (ESCC). METHODS: Capases-3 expression was evaluated immunohistochemically in 122 pairs of primary ESCCs and regional metastatic LNs assembled on tissue microarrays. The impact of caspase-3 expression on survival outcomes was analyzed by the Kaplan-Meier method and Cox proportional hazards regression model. RESULTS: The level of caspase-3 expression was significantly higher in LN metastases than in primary tumors (P < 0.001). Caspase-3 expression in the primary tumors was associated with longer median survival (23 mo vs 21 mo, P = 0.033), whereas higher expression in paired metastatic LNs was associated with shorter median survival (20 mo vs 22 mo, P = 0.043). Multivariate analysis showed that both were independent prognostic factors. CONCLUSION: Caspase-3 expression in metastatic LNs may be a potential independent predictor of poorer overall survival in patients with resected ESCC and LN metastasis. Protein expression in metastatic tumors may be a biomarker prognostic of survival. © 2014 Baishideng Publishing Group Co., Limited. All rights reserved.

Zhang S.-S.,Sun Yat Sen University | Zhang S.-S.,Guangdong Esophageal Cancer Research Institute | Huang Q.-Y.,Sun Yat Sen University | Huang Q.-Y.,Guangdong Esophageal Cancer Research Institute | And 15 more authors.
Annals of Surgical Oncology | Year: 2013

Background: The value of p53 status for predicting response to chemotherapy-based treatment in patients with esophageal cancer has been controversial. We conducted a meta-analysis to elucidate the correlation of p53 status with the response to chemotherapy-based treatment. Methods: Studies were searched in PubMed, Embase, and Web of Science (up to September 2012). The p53 status and response to therapy were defined and standardized. Subgroup analyses based on the treatment and histopathology were performed to explore the usefulness of p53 status for predicting response to therapy in esophageal cancer. Sensitivity analyses were conducted by removing specific studies to assess the effects of study quality. Results: We included 28 studies with 1497 cases in our meta-analysis. Wild-type form of p53 status (low expression of p53 protein and/or wild-type p53 gene) was associated with high response to chemotherapy-based treatment in esophageal cancer (total major response [MR]: risk ratio [RR] = 1.09, 95 % CI = 1.03-1.16, P =.003; pathological MR: RR = 1.15, 95 % CI = 1.06-1.25, P =.001; total complete response [CR]: RR = 1.08, 95 % CI = 1.00-1.17, P =.040). The similar correlation between the wild-type form p53 and response to therapy were also detected in subgroup analyses (total MR, pathological MR, and total CR in chemoradiotherapy subgroup; total MR in chemotherapy subgroup; total MR and pathological CR in esophageal squamous cell carcinoma [ESCC]). Additionally, patients with wild-type form p53 status had high pathological complete response rate to neoadjuvant chemoradiotherapy in ESCC. Conclusions: The current meta-analysis suggested that p53 status might be a predictive biomarker for response to chemotherapy-based treatment in esophageal cancer. © 2013 Society of Surgical Oncology.

Zhang S.S.,Sun Yat Sen University | Zhang S.S.,Guangdong Esophageal Cancer Research Institute | Yang H.,Sun Yat Sen University | Yang H.,Guangdong Esophageal Cancer Research Institute | And 23 more authors.
British Journal of Cancer | Year: 2013

Background: Body mass index (BMI) has been associated with the risk of oesophageal cancer. But the influence of BMI on postoperative complication and prognosis has always been controversial. Methods: In total, 2031 consecutive patients who underwent oesophagectomy between 1998 and 2008 were classified according to Asian-specific BMI (kg m -2) cutoff values. The impact of BMI on overall survival (OS) was estimated using the Kaplan-Meier method and Cox proportional hazard models. We performed a meta-analysis to examine the association of BMI with OS and postoperative complication. Results: Patients with higher BMI had more postoperative complication (P = 0.002), such as anastomotic leakage (P = 0.016) and cardiovascular diseases (P < 0.001), but less incidence of chylous leakage (P = 0.010). Logistic regression analysis showed that BMI (P = 0.005) was a confounding factor associated with postoperative complication. Multivariate analysis showed that overweight and obese patients had a more favourable survival than normal weight patients (HR (hazard ratio) = 0.80, 95% CI (confidence interval): 0.70-0.92, P = 0.001). Subgroup analysis showed that the association with higher BMI and increased OS was observed in patients with oesophageal squamous cell carcinoma (ESCC) (P < 0.001), oesophageal adenocarcinoma (EA) (P = 0.034), never-smoking (P = 0.035), ever-smoking (P = 0.035), never alcohol consumption (P = 0.005), weight loss (P = 0.003) and advanced pathological stage (P < 0.001). The meta-analysis further corroborated that higher BMI was associated with increased complication of anastomotic leakage (RR (risk ratio) = 1.04, 95% CI: 1.02-1.06, P = 0.001), wound infection (RR = 1.03, 95% CI: 1.00-1.05, P = 0.031) and cardiovascular diseases (RR = 1.02, 95% CI: 1.00-1.05, P = 0.039), but decreased incidence of chylous leakage (RR = 0.98, 95% CI: 0.96-0.99, P < 0.001). In addition, high BMI could significantly improved OS (HR = 0.78, 95% CI: 0.71-0.85, P < 0.001). Conclusion: Preoperative BMI was an independent prognostic factor for survival, and strongly associated with postoperative complications in oesophageal cancer. Copyright © 2013 Cancer Research UK.

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