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PIK3CA polymorphisms associated with susceptibility to hepatocellular carcinoma.

ABSTRACT: Our study was carried out to explore the relationship of PIK3CA rs17849071 and rs17849079 polymorphisms with the susceptibility to hepatocellular carcinoma (HCC) in Chinese Han population.150 HCC patients and 152 healthy individuals were recruited in the case and control groups respectively. The genotypes of PIK3CA rs17849071 and rs17849079 polymorphisms were detected with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. The linkage disequilibrium and haplotypes were analyzed with Haploview software. Differences in frequencies of genotypes, alleles, and haplotypes between the case and control groups were checked with ?(2) test. The controls were matched with the cases in age and gender. The relative risk of HCC was represented by odds ratio (OR) and 95% confidence interval (95% CI).Significant difference in frequencies of GG genotype and G allele in PIK3CA rs17849071 polymorphism existed between the two groups (P=0.040; P=0.028), indicating that rs17849071 was closely related to the increased risk of HCC (OR=2.919, 95% CI=1.007-8.460; OR=1.642, 95% CI=1.051-2.564). Furthermore, TT genotype also significantly increased the susceptibility to HCC (OR=3.438, 95% CI=1.050-11.250) and so was T allele (OR=1.521, 95% CI=1.052-2.199). The haplotype analysisshowed that G-T haplotypes were higher in cases than that of controls (P=0.030), which suggested that G-T might be a susceptible haplotype to HCC.The PIK3CA rs17849071 and rs17849079 polymorphisms may increase the risk of HCC either independently or synergistically.

SUBMITTER: Li HG

PROVIDER: S-EPMC4713662 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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PIK3CA polymorphisms associated with susceptibility to hepatocellular carcinoma.

Li Hong-Guang HG Liu Fang-Feng FF Zhu Hua-Qiang HQ Zhou Xu X Lu Jun J Chang Hong H Hu Jin-Hua JH

International journal of clinical and experimental pathology 20151101 11

<h4>Purpose</h4>Our study was carried out to explore the relationship of PIK3CA rs17849071 and rs17849079 polymorphisms with the susceptibility to hepatocellular carcinoma (HCC) in Chinese Han population.<h4>Methods</h4>150 HCC patients and 152 healthy individuals were recruited in the case and control groups respectively. The genotypes of PIK3CA rs17849071 and rs17849079 polymorphisms were detected with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. The li ...[more]

PMID: 26823876

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Project description:BackgroundHepatocellular carcinoma (HCC) is an intractable public health threat worldwide, representing the second leading cause of cancer-related mortality, with limited early detection and therapeutic options. Recent findings have revealed that the susceptibility of HCC is closely related to microRNA (miRNA). We performed this systematic review with a network meta-analysis to investigated four single nucleotide polymorphisms (SNPs) that most regularly reported in miRNAs, exploring their involvement in HCC susceptibility and interaction with hepatitis B virus (HBV).MethodsDatabases were reviewed for related studies published up to May 2019 to identify all studies that compared genotypes of miR-146a rs2910164, miR-149 rs2292832, miR-196a2 rs11614913, and miR-499 rs3746444 with no language and date restrictions. A pairwise meta-analysis was performed to estimate pooled odds ratios and 95% confidence intervals incorporating heterogeneity to assess the relationship between four miRNA polymorphisms and HCC. To further clarify the effect of polymorphisms on HCC, a Bayesian network meta-analysis was conducted to combine the effective sizes of direct and indirect comparisons. Calculations were performed by R version 3.6.1 and STATA 14.0. All steps were performed according to PRISMA guidelines.ResultsA total of 20 studies were enrolled in this network meta-analysis, providing 5,337 hepatocellular carcinoma cases and 6,585 controls. All included studies had an acceptable quality. Pairwise meta-analysis demonstrated that miR-196a2 rs11614913 was significantly associated with the susceptibility of HCC, while the other three SNPs were not found to have a significant association. In the analysis of HCC patients under different HBV infection status, only miR-196a2 revealed correlation of threefold risk. The network results showed no significant difference in the distribution of genotype frequencies except for miR-196a2, which appeared to have the highest superiority index when comparing and ranking four SNPs.ConclusionMiR-196a2 rs11614913 was significantly associated with the susceptibility of HCC, especially for HBV- related HCC, and that individuals with TC/CC were more susceptible. No significant association was found in the other three miRNA genes. MiR-196a2 could serve as the best predictor of susceptibility in HCC.

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PIK3CA polymorphisms associated with susceptibility to hepatocellular carcinoma.

Publications

PIK3CA polymorphisms associated with susceptibility to hepatocellular carcinoma.

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