Association of RTN4 indel polymorphisms with the risk of tumorigenesis in the Chinese Han population.

Although studies have reported the association of two insertion/deletion (indel) polymorphisms in the 3'-untranslated region (UTR) of the RTN4 gene with the risk of tumorigenesis, the findings are inconsistent and require further explanation. Comprehensive literature searches were undertaken in Pubmed, Embase, Web of Science, China National Knowledge Infrastructure, and WangFang database. The risk of tumorigenesis was determined using odds ratios (ORs) and 95% confidence intervals (CIs) based on STATA 12.0 software. A total of four case-control studies with 1214 patients and 1850 controls focused on the RTN4 gene TATC/- polymorphism and five case-control studies with 1625 patients and 2321 controls on the RTN4 gene CAA/- polymorphism. Pooled analysis showed that the TATC/- polymorphism was not associated with the risk of tumorigenesis under all genetic models and the CAA/- polymorphism was significantly associated with the risk of tumorigenesis under the homozygote genetic model (Del/Del vs. Ins/Ins: OR=1.32, 95%CI=1.04-1.68, P=0.02). In conclusion, the current findings suggested that the CAA/- polymorphism in the 3'-UTR of the RTN4 gene was significantly associated with the risk of tumorigenesis in the Chinese population and may serve as a valuable marker for predicting tumor risk.

Clinical significance of LIN28A gene polymorphisms and expression in pan-cancer: a meta-analysis and bioinformatic analysis.

Several studies have reported the relationship between LIN28A gene polymorphisms (rs3811463 T > C and rs34787247 G > A) and cancer susceptibility, but the results are inconsistent and need further clarification. The current study aimed to evaluate their relationship and also to explore the relationship between LIN28A gene expression and immune infiltration, tumor stage, survival prognosis, and drug sensitivity in pan-cancer. The meta-analysis and data mining were completed by STATA software and the GSCA platform, respectively. The meta-analysis showed that the rs3811463 polymorphism was not associated with cancer susceptibility, while the rs34787247 polymorphism was associated with cancer susceptibility in the Chinese population [AA vs. GG: Odd Ratio (OR)=1.98, 95% Confidence Interval (CI)=1.35-2.89, PZ<0.001; GA vs. GG: OR = 1.17, 95%CI= 1.01-1.36, PZ=0.04; (AA + GA) vs. GG: OR = 1.24, 95%CI = 1.07-1.43, PZ=0.004; AA vs. (GA + GG): OR = 1.90, 95%CI = 1.30- 2.78, PZ=0.001; A vs. G: OR = 1.27, 95%CI = 1.12-1.44, PZ<0.001]. LIN28A gene expression was associated not only with immune infiltration, pathological stage, and survival prognosis of certain cancers, but also with sensitivity to multiple anticancer drugs, such as cisplatin, pazopanib, olaparib, and selumetinib. In conclusion, the current study suggested that the rs34787247 G > A polymorphism might be used as a cancer risk marker in the Chinese population, and LIN28A might serve as a prognostic marker and therapeutic target for certain cancers.