Original Article
Expression and prognostic significance of esophageal squamous cell carcinoma associated long non-coding RNA-1 in esophageal squamous cell carcinoma
Wei Cao, Ming Yan, Wei Wu, Xiaoyan Sun, Xinguang Cao, Ruihua Zhao, Pengli Han, Yuanbo Cui, Pengju Lyu, Jianying Zhang, Mingtai Wang
Published 2018-06-15
Cite as Chin J Dig, 2018, 38(6): 365-370. DOI: 10.3760/cma.j.issn.0254-1432.2018.06.002
Abstract
ObjectiveTo analyze the expression and prognostic significance of esophageal squamous cell carcinoma associated long non-coding RNA-1 (ESCCAL-1) in esophageal squamous cell carcinoma (ESCC) tissues.
MethodsFrom August 2011 to May 2013, 73 patients with ESCC, who received radical resection in The First Affiliated Hospital of Zhengzhou University and Henan Cancer Hospital, were enrolled. The expressions of ESCCAL-1 in esophageal tumor tissues and corresponding adjacent non-tumor tissues were detected by quantitative real-time polymerase chain reaction (qRT-PCR). T test, chi square test and multivariate analysis were performed for statistical analysis.
ResultsThe expression of ESCCAL-1 was 28.03±9.37 in esophageal tumor tissues of patients with ESCC, which was higher than that in corresponding adjacent normal tissues (11.39±4.15), and the difference was statistically significant (t=2.964, P<0.01). However there were no statistically significant differences in the expressions of ESCCAL-1 among the patients with different age, gender, histological grade, classification of Union for International Cancer Control (UICC), T stage or lymph nodes metastasis (all P>0.05). The median disease-free survival (DFS) time and overall survival (OS) time of patients with low ESCCAL-1 expression were 39 months and 42 months, respectively, which were longer than those of patients with high ESCCAL-1 expression (30 months and 37 months), and the differences were statistically significant (χ2=9.049, P=0.003; χ2=10.165, P=0.001). The results of multivariate analysis showed that ESCCAL-1 expression was the independent risk factor of DFS and OS (high risk (HR)=2.45, 95% confidence interval (CI) 1.22 to 4.93, P=0.012; HR=2.29, 95%CI 1.14 to 4.59, P=0.019).
ConclusionsESCCAL-1 may be involved the genesis and development of ESCC. The expression of ESCCAL-1 in esophageal tumor tissues may be a prognostic parameter for patients with ESCC receiving radical resection.
Key words:
Esophageal neoplasms; Carcinoma, squamous cell; Prognosis; qRT-PCR; ESCCAL-1
Contributor Information
Wei Cao
Translational Medical Center, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou 450007, China
Ming Yan
Wei Wu
Xiaoyan Sun
Xinguang Cao
Ruihua Zhao
Pengli Han
Yuanbo Cui
Pengju Lyu
Jianying Zhang
Mingtai Wang