The relationship between gene polymorphism of telomerase reverse transcriptase and susceptibility to hepatocellular carcinoma

Abstract

To explore the correlation between single-nucleotide polymorphisms (SNPs) of telomerase reverse transcriptase (TERT) rs2736098 and rs2736100 and the susceptibility to hepatocellular carcinoma (HCC). This case-control study design included 1300 diagnosed HCC patients with HBsAg positive and 1344 HBsAg positive people as control-group.rs2736098 and rs2736100 on TERT were selected as research sites, whose polymorphisms were detected by TaqMan allelic discrimination assay. The OR values (95%CI) were calculated by logistic regression to compare the correlation between different genotype and susceptibility to HCC. The distribution frequencies of three genotypes as GG, AG and AA on rs2736098 were separately 39.3% (500/1273), 44.2% (563/1273) and 16.5% (210/1273) in case group; while respectively 39.6% (526/1328), 45.5% (604/1328) and 14.9% (198/1328) in control group. The distribution frequencies of three genotypes as AA, AC and CC on rs2736100 were separately 33.7% (428/1269), 49.9% (633/1269) and 16.4% (208/1269) in case group; while respectively 34.0% (449/1322), 49.2% (651/1322) and 16.8% (222/1322) in control group. The multi-variates logistic regression analysis showed that there was no significant difference between rs2736098 mutated A carriers and genotype GG carriers in the susceptibility to HCC after adjusting by age, sex, smoking and drinking factors (rs2736098, AA + AG vs GG: adjusted OR = 1.00 (95%CI: 0.86 - 1.18)); and there was no significant different between rs2736100 mutated C carriers and genotype AA carriers in the susceptibility to HCC either (AC + CC vs AA: adjusted OR = 1.03 (95%CI: 0.87 - 1.22)). The polymorphisms of rs2736098 and rs2736100 on TERT may not play a landmark role in susceptibility to HCC among Chinese population.