Kim JG, Chae YS, Sohn SK, Kang BW, Moon JH, Lee SJ, Jeon SW, Park JS, Park JY, Choi GS. Clinical significance of genetic variations in the PI3K/PTEN/AKT/mTOR pathway in Korean patients with colorectal cancer.
Oncology 2011;
79:278-82. [PMID:
21412012 DOI:
10.1159/000320761]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 08/16/2010] [Indexed: 01/11/2023]
Abstract
OBJECTIVE
Signaling through the PI3K/PTEN/AKT/mTOR pathway is responsible for balancing cell survival and apoptosis. Accordingly, the present study analyzed 14 SNPs of the PI3K/PTEN/AKT/mTOR pathway genes and their impact on the prognosis for patients with colorectal cancer.
METHODS
444 consecutive patients with surgically resected colorectal adenocarcinoma were enrolled in the present study. The genomic DNA was extracted from fresh colorectal tissue, and 14 polymorphisms of the PI3K/PTEN/AKT/mTOR pathway genes were determined using a real-time PCR genotyping assay.
RESULTS
Pathologic stages after surgery were as follows: stage 0/I (n = 85, 19.1%), stage II (n = 149, 33.6%), stage III (n = 147, 33.1%), and stage IV (n = 63, 14.2%). Univariate and multivariate survival analysis including stage, age, site of disease, adjuvant chemotherapy, and carcinoembryonic antigen (CEA) level showed that these polymorphisms were not associated with progression-free or overall survival. For the clinicopathologic parameters, CEA level and TNM stage were significant prognostic factors in a Cox model for survival.
CONCLUSION
None of the 14 SNPs of the PI3K/PTEN/AKT/mTOR pathway genes investigated in this study was found to be an independent prognostic marker for Korean patients with surgically resected colorectal cancer.
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