Abstract
The Hippo signalling pathway plays a crucial role in carcinogenesis. Therefore, we hypothesized that genetic variants in genes related to this pathway are associated with the colorectal cancer risk. A case–control study including 1150 patients and 1342 controls was performed to assess the association of genetic variants of genes involved in the Hippo signalling pathway with the risk of colorectal cancer. The results were corrected for multiple comparisons using the false discovery rate (FDR). We used a regression model to determine the effects of single-nucleotide polymorphisms (SNPs) on the survival of patients with colorectal cancer in The Cancer Genome Atlas (TCGA) datasets. An expression quantitative trait loci (eQTL) analysis was performed using TCGA datasets and the Genotype-Tissue Expression (GTEx) project. Gene Expression Omnibus (GEO) datasets were used to provide additional data on the expression of genes in colorectal cancer. The SCRIB rs13251492 G allele was associated with a significantly decreased risk of colorectal cancer (odds ratio (OR) = 0.79, 95% confidence interval (CI) = 0.70–0.89, P = 7.76 × 10–5, P(FDR) = 6.98 × 10–4). Patients with the rs13251492 AG/GG allele experienced a longer recurrence-free survival (RFS) time (hazard ratio (HR) = 0.64, 95% CI = 0.42–0.99, P = 0.049) than patients with the rs13251492 A allele. The eQTL analysis revealed a significant association between rs13251492 and the expression of the SCRIB mRNA in colorectal tumors. Dual-luciferase reporter assays in DLD-1 and HCT116 cells revealed a lower enhancer activity of the rs13251492 G allele than the A allele. In addition, the SCRIB mRNA was expressed at markedly higher levels in colorectal cancer tissues than in normal tissues. Therefore, we identified the SCRIB rs13251492 variant as a novel colorectal cancer susceptibility locus and provided evidence of its functional relevance.
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Abbreviations
- CI:
-
Confidence interval
- eQTL:
-
Expression quantitative trait loci
- FDR:
-
False discovery rate
- HR:
-
Hazards ratio
- HWE:
-
Hardy–Weinberg equilibrium
- LD:
-
Linkage disequilibrium
- MAF:
-
Minor allele frequency
- OR:
-
Odds ratio
- OS:
-
Overall survival
- RFS:
-
Recurrence-free survival
- SNPs:
-
Single-nucleotide polymorphisms
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Acknowledgements
This study was supported in part by the Priority Academic Program Development of Jiangsu Higher Education Institutions (Public Health and Preventive Medicine).
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ZF and MW conceived and designed the experiments. HS and YM wrote the paper. TH and SL contributed reagents/materials/analytical tools. MD, JX, DG, and YW revised the paper. All authors read and approved the final manuscript.
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Shen, H., Meng, Y., Hu, T. et al. Genetic variants in Hippo signalling pathway-related genes affect the risk of colorectal cancer. Arch Toxicol 95, 271–281 (2021). https://doi.org/10.1007/s00204-020-02910-3
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DOI: https://doi.org/10.1007/s00204-020-02910-3