Houjun Jia1, Ziwei Wang. 1. Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Abstract
BACKGROUND/AIMS: The stabilization of telomere length has important roles in the carcinogenesis of colorectal cancer. A systemic review and meta-analysis of published studies was performed to assess the prognostic role of telomere length in colorectal cancer. METHODS: Pubmed and Embase were searched for eligible studies on the association between telomere length and overall survival in colorectal cancer patients. The pooled hazard ratio (HR) and corresponding 95% confidence intervals (95%CI) was calculated using fixed-effects or random-effects model according to the magnitude of between-study heterogeneity. RESULTS: Seven individual studies with a total of 956 colorectal cancer patients were included. Long telomere length in cancer tissues was marginally associated with poorer overall survival (Random-effects HR = 1.85, 95% 0.90 to 3.83, P = 0.09). When using studies with adjusted estimates, long telomere length in cancer tissues was independently and significantly associated with poorer overall survival (Fixed-effects HR = 2.70, 95% 1.51 to 4.84, P = 0.001). However, short telomere length in peripheral blood leukocytes was independently and significantly associated with poorer overall survival (Fixed-effects HR = 2.01, 95% 1.46 to 2.77, P < 0.001). CONCLUSIONS: There is some evidence for telomere length as a prognostic factor for overall survival in colorectal cancer patients. More studies with large number of participants are needed to further assess the prognostic significance of telomere length in colorectal cancer patients.
BACKGROUND/AIMS: The stabilization of telomere length has important roles in the carcinogenesis of colorectal cancer. A systemic review and meta-analysis of published studies was performed to assess the prognostic role of telomere length in colorectal cancer. METHODS: Pubmed and Embase were searched for eligible studies on the association between telomere length and overall survival in colorectal cancerpatients. The pooled hazard ratio (HR) and corresponding 95% confidence intervals (95%CI) was calculated using fixed-effects or random-effects model according to the magnitude of between-study heterogeneity. RESULTS: Seven individual studies with a total of 956 colorectal cancerpatients were included. Long telomere length in cancer tissues was marginally associated with poorer overall survival (Random-effects HR = 1.85, 95% 0.90 to 3.83, P = 0.09). When using studies with adjusted estimates, long telomere length in cancer tissues was independently and significantly associated with poorer overall survival (Fixed-effects HR = 2.70, 95% 1.51 to 4.84, P = 0.001). However, short telomere length in peripheral blood leukocytes was independently and significantly associated with poorer overall survival (Fixed-effects HR = 2.01, 95% 1.46 to 2.77, P < 0.001). CONCLUSIONS: There is some evidence for telomere length as a prognostic factor for overall survival in colorectal cancerpatients. More studies with large number of participants are needed to further assess the prognostic significance of telomere length in colorectal cancerpatients.
Authors: Sergio García-Martínez; Daniel González-Gamo; Tamara Fernández-Marcelo; Sofía Tesolato; Sofía De La Serna; Inmaculada Domínguez-Serrano; Oscar Cano-Valderrama; Ana Barabash; Carmen De Juan; Antonio Torres-García; Pilar Iniesta Journal: Mol Clin Oncol Date: 2021-07-03