Objective To explore the causal relationship between systemic inflammatory factors and the risk of hepatocellular carcinoma.
Methods This study was based on the published genome-wide association study (GWAS) database. The exposure factor was 41 systemic inflammatory regulators. The data were derived from a Finland study with a sample size of 8 293 people. The outcome variable was hepatocellular carcinoma, which was derived from the Finnish database (FINNGen). Two-sample Mendelian randomization analysis was performed using inverse variance weighted (IVW), MR-Egger, weighted median estimator (WME), and weighted mode (WM) MR-Egger was carried out for pleiotropy analysis, Cochran's Q test was used for heterogeneity analysis, and leave-one-out method was used for sensitivity analysis.
Results IVW results of two-sample Mendelian randomization analysis showed that TNF-related apoptosis-inducing ligand (TRAIL) level (OR=0.77, 95%CI=0.61-0.97, P=0.025), macrophage-stimulating factor (MCSF) level (OR=0.69, 95%CI=0.50-0.95, P=0.024) and interleukin-18 (IL-18) level (OR=0.77, 95%CI=0.61-0.97, P=0.026) were negatively correlated with the risk of hepatocellular carcinoma.
Conclusion TRAIL, IL-18 and MCSF had potential negative causal association with hepatocellular carcinoma, which migh be protective factors for hepatocellular carcinoma.
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