Statin use and risk of HCC in patients with MASLD and T2DM: an umbrella review and meta-analysis.

Background: The effect of statin use on hepatocellular carcinoma (HCC) in patients with metabolic dysfunction-associated steatotic liver disease (MASLD) or type two diabetes mellitus (T2DM) is still unclear. In this umbrella review, we aimed to assess the available evidence for the association of statin use and HCC risk in the target population.

Methods: We carried out an umbrella review of previous systematic reviews/meta-analyses indexed in Cochrane, Embase, Scopus, and PubMed databases and published between Jan 1st, 2013, and Oct 22, 2024. We used random effects models to recalculate summary risk estimates for HCC incidence. Using A Measurement Tool to Assess methodological quality of systematic Review (AMSTAR2) tool, two independent reviewers evaluated each article for eligibility and methodologic quality and gathered data from the included studies.

Results: Of the initially identified 1,038 systematic reviews/meta-analyses, three non-overlapping studies with medium/high quality were included for qualitative synthesis. Statin use in people with T2DM was reported in six studies belonging to two meta-analyses. The results showed that statins were associated with a decreased risk of HCC (RR: 0.16, 95% CI: [0.03, 0.98]). However, the association was nonsignificant in patients with MASLD comprising five studies from one meta-analysis (RR: 0.89, 95% CI: [0.56, 1.40]).

Conclusion: Statin use is associated with a decreased incidence of HCC in people with T2DM. In patients with MASLD, the association is not significant. However, the effects of other variables including the stage of inflammation and/or liver fibrosis on the outcome need to be explored in future studies.