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Gastric Cancer
Published in: Gastric Cancer 6/2019

01-11-2019 | Original Article

Genetic variations associated with telomere length confer risk of gastric cardia adenocarcinoma

Authors: Nasha Zhang, Yan Zheng, Jie Liu, Tiansui Lei, Yeyang Xu, Ming Yang

Published in: Gastric Cancer | Issue 6/2019

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Abstract

Background

Aberrant telomere lengthening is a critical feature of malignant cells. Short leukocyte telomere length (LTL) confers elevated risk of gastric cardia adenocarcinoma (GCA). Multiple genome-wide association studies (GWAS) identified various single-nucleotide polymorphisms (SNPs) associated with LTL in different ethnic populations. However, it remains largely unexplored how these genetic variants are involved in GCA susceptibility.

Methods

We systematically screened GWAS-identified candidate SNPs and tested the impact of 30 polymorphisms in genes associated with interindividual LTL variation on GCA using two-stage case–control comparisons consisting of 1024 GCA patients and 1118 controls.

Results

We observed that CXCR4 rs6430612, TERT rs10069690, and rs2853676 as well as VPS34 rs2162440 are significantly associated with GCA development. A 0.64-fold decreased risk of GCA is associated with the CXCR4 rs6430612 CT genotype compared with the CC genotype (P = 0.002). On the contrary, the TERT rs10069690 TT genotype carriers had a 1.83-fold increased risk to develop GCA compared to the CC genotype carriers (P = 5.8×10−6). We also detected a 2.17-fold increased OR for GCA that was associated with the TERT rs2853676 TT genotype (P = 2.6×10−6). In addition, the odds of having the VPS34 rs2162440 GA genotype in GCA patients were 1.35 compared with the GG genotype (P = 0.002). In stratified analyses, the association between TERT rs10069690 polymorphism and GCA was more pronounced in nonsmokers (Pinteraction = 9.7 × 10−5) and nondrinkers (Pinteraction = 4.6 × 10−5).

Conclusions

Our results highlight the importance of both LTL and LTL-related genetic variants to GCA predisposition.
Appendix
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Metadata
Title
Genetic variations associated with telomere length confer risk of gastric cardia adenocarcinoma
Authors
Nasha Zhang
Yan Zheng
Jie Liu
Tiansui Lei
Yeyang Xu
Ming Yang
Publication date
01-11-2019
Publisher
Springer Singapore
Published in
Gastric Cancer / Issue 6/2019
Print ISSN: 1436-3291
Electronic ISSN: 1436-3305
DOI
https://doi.org/10.1007/s10120-019-00954-8

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