scholarly journals Strong association of tissue inhibitor of metalloproteinase (TIMP)-2 and -3 promoter single nucleotide polymorphisms with risk of colorectal cancer in ethnic Kashmiri population – a case control study

2019 ◽  
Vol 39 (5) ◽  
Author(s):  
Mujeeb Zafar Banday ◽  
Aga Syed Sameer
Keyword(s):  
Colorectal Cancer ◽  
Risk Factors ◽  
Single Nucleotide Polymorphisms ◽  
Tumor Invasion ◽  
Case Control ◽  
Nucleotide Polymorphisms ◽  
Heterozygous Genotype ◽  
Single Nucleotide ◽  
Promoter Snps ◽  
Kashmiri Population

Abstract Background: The tissue inhibitors of metalloproteinases (TIMPs) including TIMP2 and TIMP3 are the key physiological inhibitors of matrix metalloproteinases (MMPs) and along with MMPs, TIMPs play a vital role in the coordinated proteolytic breakdown and remodeling of the extracellular matrix (ECM) and the basement membrane that represent the barriers to any malignant tumor invasion and progression. These enzymes are vital for tumor invasion and metastasis and also play a critical role in several other stages of tumor development and progression. The studies on the association of various polymorphisms in human TIMP2 and TIMP3 genes including TIMP2-418G/C and TIMP3-1296T/C single nucleotide polymorphisms (SNPs) and CRC risk are limited, mixed, and inconclusive. Materials and methods: The aim of the present study was to analyze the association of TIMP2-418G/C and TIMP3-1296T/C promoter SNPs with colorectal cancer (CRC) susceptibility and development risk and also to evaluate the modifying effects of possible TIMP2-418G/C and TIMP3-1296T/C SNPs’ genotypes on different risk factors of CRC or the reciprocal effect in ethnic population of Kashmir, India through a case–control setup. The genotype frequencies of TIMP2-418G/C and TIMP3-1296T/C promoter SNPs were compared between 142 CRC patients and 184 individually matched healthy controls by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. The associations between the TIMP2-418G/C and TIMP3-1296T/C SNPs and CRC risk were examined through conditional logistic regression models adjusted for multiple possible confounding (third) variables. The possible effect measure modification of the association between the relevant SNP genotypes and CRC risk by various CRC risk factors including age, gender, and smoking status was also analyzed. Further, the associations between these SNPs and various clinico-pathological parameters, demographic variables, and environmental factors within the case group subjects with regard to CRC risk were also evaluated. Results: The overall association between the TIMP2-418G/C and TIMP3-1296T/C SNPs and the modulation of CRC risk was found to be highly significant (P=0.019 and P=0.000 for TIMP2 and TIMP3 SNPs, respectively). The heterozygous genotype (GC) of TIMP2-418G/C was significantly associated with an increased risk of colorectal cancer [OR, 1.87 (95%CI, 1.07–3.27); P=0.027] whereas the heterozygous genotype (TC) of TIMP3-1296T/C SNP was significantly associated with a decreased risk of colorectal cancer [OR, 0.53 (95%CI, 0.32–0.86); P=0.011]. The variant genotype (CC) of TIMP3-1296T/C SNP was also significantly associated with a decreased risk of colorectal cancer [OR, 0.18 (95%CI, 0.05–0.65); P=0.009]. Conclusion: The present study demonstrates that there is a strong and highly significant association between the TIMP2-418G/C and TIMP3-1296T/C promoter SNPs and the risk of developing CRC in ethnic Kashmiri population. However, in order to substantiate our findings, the present study needs to be replicated with bigger sample size and should involve other ethnically defined populations with high CRC risk.

Investigation of Leptin and its receptor (LEPR) for single nucleotide polymorphisms in colorectal cancer: A case-control study involving 2,306 subjects.

2020 ◽  
Vol 38 (15_suppl) ◽  
pp. e16100-e16100
Author(s):  
Jing Lin ◽  
Yu Chen ◽  
Bin Lan ◽  
Zeng-qing Guo ◽  
Wei-feng Tang ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Single Nucleotide Polymorphisms ◽  
Case Control Study ◽  
Case Control ◽  
Nucleotide Polymorphisms ◽  
Case Control Studies ◽  
Chinese Han ◽  
Single Nucleotide ◽  
Subgroup Analyses ◽  
Control Study

e16100 Background: Colorectal cancer is a leading cause of cancer deaths, with poor prognosis. Some studies have reported that obesity and overweight are risk factor for the development of CRC. Leptin ( LEP) and its receptor ( LEPR) single nucleotide polymorphisms (SNPs) might regulate energy balance and be implicated in the development of CRC. The aim of this case-control study was to assess the association of LEP rs2167270 G > A, rs7799039 A > G, LEPR rs6588147 G > A, rs1137100 G > A and rs1137101 G > A SNPs with susceptibility to CRC in Eastern Chinese Han population. Methods: 1,003 CRC cases and 1,303 matched controls was compared. Five functional SNPs in LEP and LEPR genes were chosen to evaluate the correlation of these chosen SNPs with CRC susceptibility. We used the SNPscan genotyping assay to genotype LEP and LEPR SNPs. Results: A significantly decreased risk of CRC was found to be associated with the LEPR rs6588147 polymorphism (GA vs. GG: crude P= 0.007 and GA/AA vs. GG: crude P= 0.018). With adjustments for risk factors (e.g. age, gender, drinking, BMI and smoking), these associations were not changed. In subgroup analyses, the association of LEP rs2167270 with a decreased risk of CRC was found in the ≥61 years old subgroup. For LEPR rs1137100, the association of this SNP with an increased susceptibility of CRC was found in the BMI < 24 kg/m2 subgroup. In subgroup analyses for LEPR rs6588147, we identified that this locus also decreased the susceptibility of CRC in the male subgroup, < 61 years old subgroup, never smoking subgroup and never drinking subgroup. For LEPR rs1137101, the relationship of this polymorphism with a decreased susceptibility to CRC was found in the never drinking subgroup. Conclusions: The present study highlights that LEPR rs6588147, rs1137101 and LEP rs2167270 may decrease the risk of CRC. However, LEPR rs1137100 is associated with susceptibility to CRC. Further case-control studies with larger sample sizes should be conducted to validate our findings.

The association between candidate migraine susceptibility loci and severe migraine phenotype in a clinical sample

Cephalalgia ◽  
2015 ◽  
Vol 36 (7) ◽  
pp. 615-623 ◽  
Author(s):  
Ann-Louise Esserlind ◽  
Anne Francke Christensen ◽  
Stacy Steinberg ◽  
Niels Grarup ◽  
Oluf Pedersen ◽  
...  
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Single Nucleotide Polymorphisms ◽  
Case Control ◽  
Control Group ◽  
Control Analysis ◽  
Nucleotide Polymorphisms ◽  
Susceptibility Loci ◽  
Single Nucleotide ◽  
Severe Migraine

Introduction The objective of the study was to follow up and to test whether 12 previously identified migraine-associated single nucleotide polymorphisms were associated as risk factors and/or modifying factors for severe migraine traits in a Danish clinic-based population. Methods Semi-structured migraine interviews, blood sampling and genotyping were performed on 1806 unrelated migraineurs recruited from the Danish Headache Center. Genotyping was also performed on a control group of 6415 people with no history of migraine. Association analyses were carried out using logistic regression and odds ratios were calculated assuming an additive model for risk. The proxies for severe migraine traits (early onset of migraine; many lifetime attacks, prolonged migraine and tendency to chronification of migraine) were tested against the 12 single nucleotide polymorphisms and a combined genetic score in both a case-control and case-only logistic regression model. Results We successfully replicated five out of the 12 previously reported loci and confirmed the same direction of effects for all the 12 single nucleotide polymorphisms. In line with the recently published genome-wide association meta-analysis, the associations were significant for all migraine and migraine without aura but not for migraine with typical aura. Two single nucleotide polymorphisms (rs2274316 and rs11172113) conferred risk of many lifetime attacks inthe case-control analysis. In the case-only analysis, only three single nucleotide polymorphisms showed nominal association with many lifetime attacks and prolonged migraine attacks. Conclusion Our study supports previously reported findings on the association of several single nucleotide polymorphisms with migraine. It also suggests that the migraine susceptibility loci may be risk factors for severe migraine traits.

scholarly journals Single nucleotide polymorphisms associated with susceptibility for development of colorectal cancer: Case-control study in a Basque population

PLoS ONE ◽  
2019 ◽  
Vol 14 (12) ◽  
pp. e0225779 ◽  
Author(s):  
Iker Alegria-Lertxundi ◽  
Carmelo Aguirre ◽  
Luis Bujanda ◽  
Francisco Javier Fernández ◽  
Francisco Polo ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Single Nucleotide Polymorphisms ◽  
Case Control Study ◽  
Case Control ◽  
Cancer Case ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Colorectal Cancer Case ◽  
Control Study

Statin-induced adverse effects – facts and genes

2013 ◽  
Vol 154 (3) ◽  
pp. 83-92
Author(s):  
Mariann Harangi ◽  
Noémi Zsíros ◽  
Lilla Juhász ◽  
György Paragh
Keyword(s):  
Risk Factors ◽  
Single Nucleotide Polymorphisms ◽  
Adverse Effects ◽  
Adverse Events ◽  
Statin Therapy ◽  
Significant Proportion ◽  
Gene Mutations ◽  
Nucleotide Polymorphisms ◽  
Serious Adverse Events ◽  
Single Nucleotide

Statin therapy is considered to be safe and rarely associated with serious adverse events. However, a significant proportion of patients on statin therapy show some degree of intolerance which can lead to decreased adherence to statin therapy. The authors summarize the symptoms, signs and frequencies of the most common statin-induced adverse effects and their most important risk factors including some single nucleotide polymorphisms and gene mutations. Also, they review the available approaches to detect and manage the statin-intolerant patients. Orv. Hetil., 2013, 154, 83–92.

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