Association between the APC gene D1822V variant and the genetic susceptibility of colorectal cancer

Feng,Maohui; Fang,Xiping; Yang,Qian; Ouyang,Gang; Chen,Daping; Ma,Xiang; Li,Huachi; Xie,Wei

doi:10.3892/ol.2014.2102

Association between the APC gene D1822V variant and the genetic susceptibility of colorectal cancer

Authors:
- Maohui Feng
- Xiping Fang
- Qian Yang
- Gang Ouyang
- Daping Chen
- Xiang Ma
- Huachi Li
- Wei Xie
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Affiliations: Department of Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China, Department of Oncology, The Central Hospital of Enshi Prefecture, Enshi, Hubei 445000, P.R. China, Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, P.R. China
Published online on: April 28, 2014 https://doi.org/10.3892/ol.2014.2102
Pages: 139-144

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Abstract

Adenomatous polyposis coli (APC) gene polymorphisms are believed to contribute to tumor susceptibility. However, the association between genetic variants (A/T) in the APC gene D1822V polymorphism and colorectal cancer (CRC) susceptibility remains unknown. To determine this association, a case‑control study was performed. The genotype of the APC gene D1822V variants was analyzed by DNA sequencing in blood samples collected from 196 patients with CRC and 279 healthy subjects. There were no significant associations between the case and control groups in the distribution of AT [odds ratio (OR), 0.604; 95% confidence interval (CI), 0.355‑1.029) and TT genotypes (OR, 0.438; 95% CI, 0.045‑4.247) relative to the AA genotype. The ratio of the T allele was significantly lower (P=0.047) in the case group compared with the control group (OR, 0.611; 95% CI, 0.374‑0.997), indicating that the T allele conferred a protective effect in CRC. The frequency of the AT genotype among the subjects diagnosed at >45 years of age was lower than those diagnosed at a younger age (P<0.05). The present study demonstrates that the T allele of the D1822V polymorphism may exert a protective effect against CRC, however, these findings require further validation in a larger sample size.

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