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Review
. 2019 Feb 23;10(6):1417-1433.
doi: 10.7150/jca.28406. eCollection 2019.

Genetic Polymorphisms of DNA Repair Pathways in Sporadic Colorectal Carcinogenesis

Jingwei Liu  1 , Bowen Zheng  1 , Ying Li  1 , Yuan Yuan  1 , Chengzhong Xing  1
Affiliations
Review

Genetic Polymorphisms of DNA Repair Pathways in Sporadic Colorectal Carcinogenesis

Jingwei Liu et al. J Cancer. .

Abstract

DNA repair systems play a critical role in maintaining the integrity and stability of the genome, which mainly include base excision repair (BER), nucleotide excision repair (NER), mismatch repair (MMR) and double-strand break repair (DSBR). The polymorphisms in different DNA repair genes that are mainly represented by single-nucleotide polymorphisms (SNPs) can potentially modulate the individual DNA repair capacity and therefore exert an impact on individual genetic susceptibility to cancer. Sporadic colorectal cancer arises from the colorectum without known contribution from germline causes or significant family history of cancer or inflammatory bowel disease. In recent years, emerging studies have investigated the association between polymorphisms of DNA repair system genes and sporadic CRC. Here, we review recent insights into the polymorphisms of DNA repair pathway genes, not only individual gene polymorphism but also gene-gene and gene-environment interactions, in sporadic colorectal carcinogenesis.

Keywords: DNA repair; carcinogenesis; colorectal cancer; polymorphism.

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Conflict of interest statement

Competing Interests: The authors have declared that no competing interest exists.

Figures

Figure 1
Figure 1
BER pathway gene polymorphisms and sporadic CRC susceptibility.
Figure 2
Figure 2
NER pathway gene polymorphisms and sporadic CRC susceptibility.
Figure 3
Figure 3
MMR pathway gene polymorphisms and sporadic CRC susceptibility.
Figure 4
Figure 4
DSBR pathway gene polymorphisms and sporadic CRC susceptibility.
See this image and copyright information in PMC

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