Polymorphisms in the PRTOR gene in relation to gastric adenocarcinoma susceptibility in an Eastern Chinese population.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e15552-e15552
Author(s):  
Meng-Yun Wang ◽  
Ming Jia ◽  
Jing He ◽  
Qing-Yi Wei
Keyword(s):  
Gastric Cancer ◽  
Odds Ratio ◽  
Chinese Population ◽  
Adjusted Odds Ratio ◽  
Mrna Level ◽  
Nucleotide Polymorphisms ◽  
Gastric Cancer Risk ◽  
Single Nucleotide ◽  
Variant Genotype ◽  
Never Smokers

e15552 Background: RPTOR is an essential scaffold for MTOR complex which is necessary for the MTOR-catalyzed phosphorylation. Methods: In this study of 1,100 gastric cancer (GCa) cases and 1,137 matched cancer-free controls, we investigated associations between eight potentially functional single nucleotide polymorphisms (SNPs) (rs3751934 C > A, rs1062935 T > C, rs12602885 G > A, rs1468032 T > A, rs1468033 A > G, rs2271610 C > G, rs2271612 C > T, and rs2878052 G > A) in RPTOR and gastric cancer risk in an Eastern Chinese Population. Results: In logistic regression analysis, a significantly increased GCa risk was associated with the rs1468032 AA variant genotype (adjusted odds ratio [OR] = 1.32, 95% confidence interval [CI] = 1.09-1.60) under a dominant model, which remained significant after correction by the false-positive reporting probability. This risk was more evident in subgroups of younger subjects, females, never smokers, never drinkers, cancers of non-cardia and stage of Ⅲ+Ⅳ. We then performed SNP-mRNA expression correlation analysis in GTEx database as well as using real-time PCR in adjacent noncancerous tissues. We found that the AA variant genotype was associated with non-significantly decreased expression of RPTOR mRNA level. Conclusions: Our results suggest that the RPTOR rs1468032 A variant may be markers for GCa susceptibility. Larger, independent studies are warranted to validate our findings.

Association of β-defensin 1 gene Polymorphism and dental caries susceptibility in Tamil Ethnicity

2021 ◽  
pp. 4731-4735
Author(s):  
Harini Venkata Subbiah ◽  
Usha Subbiah ◽  
Athira Ajith
Keyword(s):  
Dental Caries ◽  
Odds Ratio ◽  
Regulatory Elements ◽  
Microbial Colonization ◽  
Nucleotide Polymorphisms ◽  
First Line ◽  
Single Nucleotide ◽  
Variant Genotype ◽  
Dental Caries Susceptibility ◽  
Genetic And Environmental Factors

Dental caries is a multifactorial disease that affects a large proportion of the population with both genetic and environmental factors contributing to the disease. Even in healthy oral environmental conditions, some individuals are susceptible to dental caries due to potential genetic contribution. Antimicrobial peptides are expressed in oral cavity and play an important role against microbial colonization and form an important first line defense against cariogenic bacteria. In the present study, we attempt to identify genetic variants that would cause significant functional impact towards susceptibility to dental caries. We investigated single nucleotide polymorphisms (SNPs) of beta-defensin 1 (DEFB1) as predictors of dental caries in tamil ethnic population. A total of 120 subjects were recruited for this study, which included 60 dental caries patients (DMFT>5) and 60 healthy controls (DMFT=0). Three SNPs of 5’UTR regulatory elements of DEFB1 were genotyped by PCR followed by Sanger sequencing. The genotypes associated with susceptibility to caries were found to be significant between rs11362 (p=.025, odds ratio = 3.72, 95% confidence interval (CI) = 1.289-10.742), rs1799946 (p=.023, odds ratio=4.32, 95% CI = 1.33-14.028) gene polymorphisms and risk of dental caries (DMFT>5) in tamil ethnicity. The variant genotype GG of rs1800972 polymorphism was found to be high in cases than controls but was not significant (p=0.136). Our data suggested that β-defensin 1 polymorphisms play a role in the susceptibility to dental caries.

scholarly journals Association of Single-Nucleotide Polymorphisms in DC-SIGN with Nasopharyngeal Carcinoma Susceptibility

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Sisi Li ◽  
Zhifang Lu ◽  
Mengwei Yao ◽  
Sisi Ning ◽  
Yuan Wu ◽  
...  
Keyword(s):  
Dendritic Cell ◽  
Nasopharyngeal Carcinoma ◽  
Single Nucleotide Polymorphisms ◽  
Odds Ratio ◽  
Chinese Population ◽  
Smoking History ◽  
Intercellular Adhesion Molecule ◽  
Nucleotide Polymorphisms ◽  
Gene Encoding ◽  
Single Nucleotide

The aim of this study was to explore potential relationships of four single-nucleotide polymorphisms (SNPs) in the gene encoding dendritic cell-specific intercellular adhesion molecule 3-grabbing nonintegrin (DC-SIGN) with risk of nasopharyngeal carcinoma (NPC). The DC-SIGN SNPs rs7252229, rs4804803, rs2287886, and rs735240 were genotyped in 477 unrelated NPC patients and 561 cancer-free controls. At rs7252229, risk of NPC was significantly lower in individuals with GC (odds ratio [OR] 0.076, 95% confidence interval [CI] 0.008–0.690), GG (OR 0.056, 95%CI 0.006–0.487), or GC + GG (OR 0.059, 95%CI 0.007–0.515) than in individuals with the CC genotype, after adjusting for age, gender, smoking history, and EBV-VCA-IgA status. At rs4804803, risk of NPC was significantly higher in individuals with the genotype GG than in those with the genotype AA (adjusted OR 9.038, 95%CI 1.708–47.822). At rs735240, risk of NPC did not change significantly with genotypes AG, GG, or AG + GG after adjusting for age, gender, and smoking history. However, when data were also adjusted for EBV-VCA-IgA status, three genotypes emerged as associated with significantly higher risk of NPC than the AA genotype: AG (OR 2.976, 95%CI 1.123–7.888), GG (OR 3.314, 95%CI 1.274–8.622), or GG + AG (OR 3.191, 95%CI 1.237–8.230). Our results suggest that DC-SIGN SNPs rs7252229, rs4804803, and rs735240 may influence NPC risk in the Chinese population. The mechanisms mediating this risk require a further study.

IL1R2 Polymorphisms are Associated with Increased Risk of Esophageal Cancer

2020 ◽  
Vol 20 (5) ◽  
pp. 379-387
Author(s):  
Jianfeng Liu ◽  
Yonghui Yang ◽  
Haiyue Li ◽  
Yuanwei Liu ◽  
Yao Sun ◽  
...  
Keyword(s):  
Esophageal Cancer ◽  
Odds Ratio ◽  
Chinese Population ◽  
Additive Models ◽  
Nucleotide Polymorphisms ◽  
Chinese Han ◽  
Single Nucleotide ◽  
Han Population ◽  
Increased Risk ◽  
Prevention And Treatment

Background: Esophageal cancer (EC) is the sixth leading cause of cancer death worldwide, and the overall incidence is increasing. Objective: The aim of this study was to evaluate the association between single nucleotide polymorphisms in IL1R2 and EC risk in the Chinese population. Methods: Genotyping of six SNPs of IL1R2 was performed with the Agena MassARRAY platform from 384 EC and 499 controls. The association between polymorphisms and EC risk was assessed by performing genetics models and haplotype analyses. Results: Overall analysis results showed that the allele C of rs11674595 (odds ratio [OR] = 1.42, 95% confidence interval [CI]: 1.14-1.77, p = 0.002) and allele G of rs2072472 (allele: OR = 1.35, 95% CI: 1.08-1.69, p = 0.008) were associated with an increased EC risk. The rs11674595 and rs2072472 were found to be correlated with EC risk under the codominant, dominant, and additive models. Stratification analysis found that rs11674595 and rs2072472 were associated with increased EC risk in male and in age > 55 years old subgroup. In addition, Crs11674595Grs4851527 haplotype was significantly associated with 1.44-fold increased risk of EC (95% CI: 1.12-1.84, p = 0.004). Conclusions : Our results reveal the significant association between SNPs (rs11674595 and rs2072472) in the IL1R2 and EC risk in the Chinese Han population. The findings may provide meaningful reference for the prevention and treatment of EC.

Antioxidant-rich diet, GSTP1 rs1871042 polymorphism, and gastric cancer risk in a hospital-based case-control study

2020 ◽  
Author(s):  
Jimi Kim ◽  
Hyejin Kim ◽  
Jeonghee Lee ◽  
Il Ju Choi ◽  
Young-Il Kim ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Case Control Study ◽  
Total Phenolics ◽  
Nucleotide Polymorphisms ◽  
Gastric Cancer Risk ◽  
Glutathione S Transferase ◽  
Single Nucleotide ◽  
Dietary Antioxidant ◽  
H Pylori ◽  
Control Study

Abstract Background Chronic gastritis along with Helicobacter pylori (H. pylori) infection has been implicated in inflammatory response-related genes linked to the causation of gastric cancer (GC). Glutathione S-transferase Pi (GSTP1) plays a role in regulating oxidative stress and detoxification against carcinogenesis. In this study, we aimed to determine whether an antioxidant-rich diet was associated with GC risk and to identify how the association could be altered by GSTP1 genetic variants. Methods The study was conducted with 1,245 participants (415 cases and 830 controls) matched for age and sex. Dietary antioxidant capacity was estimated based on oxygen radical absorbance capacity (ORAC) incorporated with a semiquantitative food frequency questionnaire. Five single nucleotide polymorphisms (SNPs) of GSTP1 (rs1695, rs749174, rs1871042, rs4891, and rs947895) were selected among the exome array genotype data. Results High dietary ORAC showed inverse associations with GC (hydrophilic ORAC OR T3 vs. T1, 95% CI = 0.57, 0.39–0.82, P = 0.004; lipophilic ORAC = 0.66, 0.45–0.95, P = 0.021; total phenolics = 0.57, 0.39–0.83, P = 0.005). The polymorphism of rs1871042 increased GC risk (OR, 95% CI = 1.55, 1.10–2.16, P = 0.01, CT + TT vs. CC). A remarkably reduced risk of GC was observed among those who had a high dietary ORAC according to rs1871042 polymorphism (hydrophilic ORAC OR T3 vs. T1, 95% CI = 0.36, 0.17–0.78, P for trend = 0.013; lipophilic ORAC = 0.58, 0.37–0.93, P for trend = 0.021; total phenolics = 0.38, 0.17–0.83, P for trend = 0.019). Conclusions Our findings indicate that the association between dietary ORAC intake and GSTP1 polymorphisms as they pertain to the risk of GC may present new intervention strategies for GC patients.

scholarly journals ABCC4 Variants Modify Susceptibility to Kawasaki Disease in a Southern Chinese Population

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Di Che ◽  
Lei Pi ◽  
Zhenzhen Fang ◽  
Yufen Xu ◽  
Minmin Cai ◽  
...  
Keyword(s):  
Kawasaki Disease ◽  
Chinese Population ◽  
Linkage Study ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Ethnic Populations ◽  
Southern Chinese ◽  
Increased Risk ◽  
Variant Genotype ◽  
Family Based

A previous family-based linkage study revealed that Kawasaki disease (KD) was associated with variations of the ATP-binding cassette subfamily C member 4 (ABCC4) gene in most European populations. However, significant differences exist among ethnic populations in European and Chinese subjects; therefore, whether ABCC4 variants indicate susceptibility to KD in Chinese children is unclear. The purpose of this research was to evaluate correlations between ABCC4 gene polymorphisms and susceptibility to KD in a Southern Chinese population. We genotyped six polymorphisms (rs7986087, rs868853, rs3765534, rs1751034, rs3742106, and rs9561778) in 775 KD patients and 774 healthy controls. Ninety-five percent confidence intervals (95% CIs) and odds ratios (ORs) were used to assess the strength of each association. We found that the rs7986087 T variant genotype was associated with significantly higher susceptibility to KD (adjusted OR = 1.30, 95% CI = 1.05–1.60 for rs7986087 CT/TT). However, the rs868853 T variant genotype was associated with significantly lower susceptibility to KD (adjusted OR = 0.74, 95% CI = 0.59–0.92 for rs868853 CT/CC). Compared with the patients with 0–4 ABCC4 risk genotypes, the patients with 5-6 ABCC4 risk genotypes had a significantly increased risk of KD (adjusted OR = 1.63, 95% CI = 1.07–2.47), and this risk was more significant in the subgroups of females, subjects aged 12–60 months, and individuals with coronary artery lesions. These results indicate that specific single-nucleotide polymorphisms in the ABCC4 gene may increase susceptibility to KD in a Southern Chinese population.

scholarly journals Correlation between SNPs in CDH1 and gastric cancer in Chinese population

Open Medicine ◽  
2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Yijin Lin ◽  
Jintao Yuan ◽  
Lihui Wang ◽  
Lan Wang ◽  
Yunjia Ma ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Single Nucleotide Polymorphisms ◽  
Cancer Patients ◽  
Chinese Population ◽  
Sequencing Analysis ◽  
Healthy Controls ◽  
Nucleotide Polymorphisms ◽  
Cdh1 Gene ◽  
Single Nucleotide ◽  
Gastric Cancer Patients

AbstractBackground. Many recent studies revealed that the single nucleotide polymorphisms have considerable effects on the susceptibility of cancer, such as prostate cancer, lung cancer and gastric cancer. The E-cadherin, a calcium-dependent transmembrane glycoprotein encoded by CDH1 gene, is critical for epithelial construction, intercellular adhesion and cell migration. Some associations have been reported between single nucleotide polymorphisms and gastric cancer in the Chinese population. Objective. To investigate whether the single nucleotide polymorphism in CDH1 gene is associated with the susceptibility of gastric cancer in the Chinese population. Material and methods. The genotypes of 5 known single nucleotide polymorphisms (rs33935154, rs121964871, rs121964874, rs121964875, rs121964876) were determined in 359 gastric cancer patients and 368 healthy controls. High resolution melting curve detection and sequencing analysis were used in the present study. Results. There is a statistical significance in the rs121964871 C>G polymorphism between gastric cancer patients and healthy controls (OR=1.769, 95%CI: 1.051-2.976). Elderly male individuals (>50 years of age) carrying this risk factor may be more susceptible to gastric cancer. Conclusions. The results indicated that the rs121964871 C>G polymorphism is associated with the susceptibility of gastric cancer in the Chinese population, with some age and sex-dependent tendencies observed.

Association of Gem-associated protein 4 gene polymorphisms with the risk of colorectal cancer in the Polish population

2021 ◽  
Vol 93 (SUPLEMENT) ◽  
pp. 1-5
Author(s):  
Adrianna Cieslak ◽  
Grzegorz Galita ◽  
Michał Mik ◽  
Łukasz Dziki ◽  
Adam Dziki ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Confidence Interval ◽  
Odds Ratio ◽  
Haplotype Analysis ◽  
Mirna Biogenesis ◽  
Gene Variants ◽  
Ratio Analysis ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Variant Genotype

Aim: Gem-associated protein 4 (GEMIN4), a member of the GEMIN gene family, is a key compound of the regulating factors responsible for miRNA biogenesis. Genetic variability within this gene can alter the risk for development of colorectal cancer (CRC) as was shown for other genes involved in miRNA biogenesis. Therefore, presented study was intended to identify genetic variants of three single nucleotide polymorphisms (SNPs) in the GEMIN4 gene (rs1062923, rs2740348 and rs910925) and their relationship with CRC. Methods: The study comprised 203 patients and 179 age and sex matched controls. Genotyping of GEMIN4 gene variants was done using Taqman® assay. The association of GEMIN4 variants with CRC was done by odds ratio analysis. Haplotype analysis was done to see the combined effect of studied variants on CRC. Results: Patients carrying all variant genotypes for GEMIN4 rs1062923 (odds ratio [OR]= 0.205; 95% confidence interval [CI]= 0.1034-0.4065 for CC variant and [OR] = 0.1436; [CI] = 0.0869-0.2373 for CT variant, respectively) and GEMIN4 rs2740348 (odds ratio [OR]= 0.4498; 95% confidence interval [CI]= 0.2342-0.8637for CC variant and [OR] = 0.3986; [CI] = 0.2043-0.7776 for CG variant, respectively) showed significant association in lower occurrence of cancer, whereas in case of GEMIN4 G/C rs910925 variant genotype, no significance correlation was found. Conclusions: Our study gives a substantive support for the association between the GEMIN4 gene variants/miRNA biogenesis and CRC risk.

scholarly journals Polygenic Risk Score for Coronary Heart Disease Modifies the Elevated Risk by Cigarette Smoking for Disease Incidence

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
George Hindy ◽  
Frans Wiberg ◽  
Peter Almgren ◽  
Olle Melander ◽  
Marju Orho-Melander
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Confidence Interval ◽  
Odds Ratio ◽  
Risk Category ◽  
Polygenic Risk Score ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Polygenic Risk ◽  
Never Smokers

Background: Coronary heart disease (CHD) is a multifactorial disease with both genetic and environmental components. Smoking is the most important modifiable risk factor for CHD. Our aim was to test whether the increased CHD incidence by smoking is modified by genetic predisposition to CHD. Methods and Results: Our study included 24 443 individuals from the MDCS (Malmö Diet and Cancer Study). A weighted polygenic risk score (PRS) was created by summing the number of risk alleles for 50 single-nucleotide polymorphisms associated with CHD. Individuals were classified as current, former, or never smokers. Interactions were primarily tested between smoking status and PRS and secondarily with individual single-nucleotide polymorphisms. Then, the predictive use of PRS for CHD incidence was tested among different smoking categories. During a median follow-up time of 19.4 years, 3217 incident CHD cases were recorded. The association between smoking and CHD was modified by the PRS ( P interaction =0.005). The magnitude of increased incidence of CHD by smoking was highest among individuals in the lowest tertile of PRS (odds ratio, 1.42; 95% confidence interval, 1.29–1.56 per smoking risk category) compared with the highest tertile (odds ratio, 1.20; 95% confidence interval, 1.11–1.30 per smoking risk category). This interaction was stronger among men ( P interaction =0.001) compared with women ( P interaction =0.44). The PRS provided a significantly better net reclassification and discrimination on top of traditional risk factors among never smokers compared with current smokers ( P <0.001). Conclusions: Genetic predisposition to CHD modifies the associated increased CHD risk by smoking. The PRS has a better predictive use among never smokers compared with smokers.

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