scholarly journals A Case-Control Study of the Relationship between LINC01495, TRAPPC9 Polymorphisms and Lung Cancer Susceptibility in Northeast Chinese Population

2018 ◽  
Vol 4 (1) ◽  
Keyword(s):  
Lung Cancer ◽  
Chinese Population ◽  
Case Control Study ◽  
Cancer Susceptibility ◽  
Case Control ◽  
The Relationship ◽  
Control Study ◽  
Lung Cancer Susceptibility

scholarly journals Association of Single-Nucleotide Polymorphism REX1 rs6815391, OCT4 rs13409 or rs3130932, and CTBP2 rs3740535 with Primary Lung Cancer Susceptibility: A Case-Control Study in a Chinese Population

2019 ◽  
Vol 2019 ◽  
pp. 1-23
Author(s):  
Qi Shen ◽  
Wen-xiang Wang ◽  
Qiu-ping Xu ◽  
Wen-min Xiong ◽  
Zhi-qiang Liu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Case Control Study ◽  
Cancer Susceptibility ◽  
Primary Lung Cancer ◽  
Case Control ◽  
Single Nucleotide ◽  
History Of ◽  
Control Study ◽  
History Of Cancer ◽  
Lung Cancer Susceptibility

The purpose of the current study is to explore the contribution of single-nucleotide polymorphisms (SNPs) of REX1 rs6815391, OCT4 rs13409 or rs3130932, and CTBP2 rs3740535 to the risk of lung cancer. A questionnaire survey was used to obtain basic information of the included subjects. A case control study was performed in 1121 patients and 1121 controls. All subjects were subjected to blood sampling for genomic DNA extraction and genotyping of the cancer stem cell-associated gene SNPs, including REX1 rs6815391, OCT4 rs13409 or rs3130932, and CTBP2 rs3740535 by real-time PCR. The association with the risk of primary lung cancer and interaction with environmental factors were assessed using unconditional logistic regression for the odds ratios and corresponding 95% confidence intervals. The genotype frequency distribution of OCT4 rs13409 loci was statistically significant, but there was no significant difference in the rest of the loci between lung cancer patients and healthy controls. The OCT4 gene was also related with lung cancer susceptibility in the genetic model after adjusting for lung cancer-related factors. Despite the presence of the dominant or recessive model, the four loci polymorphisms were associated with pollution near the place of residence, house type, worse ventilation situation, smoking, passive smoking, cooking oil fumes (COF), and family history of cancer, which increased the risk of lung cancer. Nonmarried status, 18.5≤BMI, COF, smoking, passive smoking, family history of cancer, and history of lung disease were independent risk factors of lung cancer susceptibility. Additionally, college degree or above, no pollution near the place of residence, protective genotype 1 or 2, and well ventilation can reduce the occurrence of lung cancer. There is an interaction between the four loci and environmental factors, and OCT4 rs13409 is a risk factor of primary lung cancer.

scholarly journals The Association of OGG1 Ser326Cys Polymorphism and Urinary 8-OHdG Levels With Lung Cancer Susceptibility: A Hospital-Based Case-Control Study in Turkey

2008 ◽  
Vol 59 (4) ◽  
pp. 241-250 ◽  
Author(s):  
Bensu Karahalil ◽  
Esra Emerce ◽  
Bülent Koçer ◽  
Serdar Han ◽  
Necati Alkiş ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Molecular Mechanisms ◽  
Case Control Study ◽  
Cancer Susceptibility ◽  
Association Studies ◽  
Case Control ◽  
Major Health Problem ◽  
Ser326cys Polymorphism ◽  
Control Study ◽  
Lung Cancer Susceptibility

The Association of OGG1 Ser326Cys Polymorphism and Urinary 8-OHdG Levels With Lung Cancer Susceptibility: A Hospital-Based Case-Control Study in TurkeyHigh incidence and poor prognosis of lung cancer make it a major health problem worldwide. Although smoking is a major cause of lung cancer, only some smokers develop lung cancer, which suggests that there is a genetic predisposition in some individuals. 8-OHG is an important oxidative base lesion and may elevate due to cancer and smoking. It is repaired by 8-hydroxyguanine DNA glycosylase 1 (OGG1), which has several polymorphisms. Although the Ser326Cys polymorphism is consistently associated with a range of cancers, findings about this polymorphism and lung cancer risk are contradictory. To date, no study has examined this association in the Turkish population. We conducted a case-control study to investigate the association between OGG1 Ser326Cys polymorphism and the risk of lung cancer using PCR-RFLP. We also evaluated gene-smoking interaction and excretion of urinary 8-OHdG. Our results suggest that the OGG1 Ser326Cys polymorphism is not a genetic risk factor for lung cancer, and that the heterozygous genotype is associated with a significantly reduced risk for lung cancer. The levels of 8-OHdG did not correlate with the polymorphism and smoking. Larger association studies are needed to validate our findings, and mechanistic studies are needed to elucidate the underlying molecular mechanisms of this association.

Association between polymorphisms in the GSTA4 gene and risk of lung cancer: A case-control study in a Southeastern Chinese population

2008 ◽  
Vol 48 (3) ◽  
pp. 253-259 ◽  
Author(s):  
Ji Qian ◽  
Jianying Jing ◽  
Guangfu Jin ◽  
Haifeng Wang ◽  
Yi Wang ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Chinese Population ◽  
Case Control Study ◽  
Case Control ◽  
Control Study

scholarly journals A Functional Polymorphism in Accessible Chromatin Region Confers Risk of Non-Small Cell Lung Cancer in Chinese Population

2021 ◽  
Vol 11 ◽  
Author(s):  
Jieyi Long ◽  
Tingting Long ◽  
Ying Li ◽  
Peihong Yuan ◽  
Ke Liu ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Small Cell Lung Cancer ◽  
Chinese Population ◽  
Case Control Study ◽  
Case Control ◽  
Small Cell ◽  
Small Cell Lung ◽  
Using Data ◽  
Accessible Chromatin ◽  
Control Study

BackgroundThe disease-associated non-coding variants identified by genome-wide association studies (GWASs) were enriched in open chromatin regions (OCRs) and implicated in gene regulation. Genetic variants in OCRs thus may exert regulatory functions and contribute to non-small cell lung cancer (NSCLC) susceptibility.ObjectiveTo fine map potential functional variants in GWAS loci that contribute to NSCLC predisposition using chromatin accessibility and histone modification data and explore their functions by population study and biochemical experimental analyses.MethodsWe mapped the chromatin accessible regions of lung tissues using data of assay for transposase-accessible chromatin using sequencing (ATAC-seq) in The Cancer Genome Atlas (TCGA) and prioritized potential regulatory variants within lung cancer GWAS loci by aligning with histone signatures using data of chromatin immunoprecipitation assays followed by sequencing (ChIP-seq) in the Encyclopedia of DNA Elements (ENCODE). A two-stage case–control study with 1,830 cases and 2,001 controls was conducted to explore the associations between candidate variants and NSCLC risk in Chinese population. Bioinformatic annotations and biochemical experiments were performed to further reveal the potential functions of significant variants.ResultsSixteen potential functional single-nucleotide polymorphisms (SNPs) were selected as candidates from bioinformatics analyses. Three variants out of the 16 candidate SNPs survived after genotyping in stage 1 case–control study, and only the results of SNP rs13064999 were successfully validated in the analyses of stage 2 case–control study. In combined analyses, rs13064999 was significantly associated with NSCLC risk [additive model; odds ratio (OR) = 1.17; 95%CI, 1.07–1.29; p = 0.001]. Functional annotations indicated its potential enhancer bioactivity, and dual-luciferase reporter assays revealed a significant increase in luciferase activity for the reconstructed plasmid with rs13064999 A allele, when compared to the one with wild-type G allele (pA549 < 0.001, pSK-MES-1 = 0.004). Further electrophoretic mobility shift assays (EMSA) and super-shift assays confirmed a stronger affinity of HP1γ for the binding motif containing SNP rs13064999 A allele.ConclusionThese findings suggested that the functional variant rs13064999, identified by the integration of ATAC-seq and ChIP-seq data, contributes to the susceptibility of NSCLC by affecting HP1γ binding, while the exact biological mechanism awaits further exploration.

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