Global burden of liver cancer from 1990 to 2021 and 20-year projections: findings from the global burden of disease study 2021.

BACKGROUND: Liver cancer poses a significant global health burden, characterized by substantial regional disparities. We analyzed liver cancer incidence and mortality across 204 countries and territories from 1990 to 2021 and projected trends from 2021 to 2041. MATERIALS AND METHODS: Data from the Global Burden of Disease (GBD) Study 2021 were used to calculate age-standardized rate (ASR), average annual percentage change (AAPC), and estimated annual percentage change (EAPC). Risk factors, human development index (HDI), and sociodemographic index (SDI) were evaluated. The Nordpred and Bayesian Age-Period-Cohort (BAPC) models projected future trends. RESULTS: Globally, according to the analysis of AAPC, the ASR of liver cancer incidence rose by 0.115% (95% CI: 0.07-0.159) annually, while the mortality ASR trend remains stable (-0.113%, 95% CI: -0.35-0.124). Viral hepatitis B and C remained primary causes, but non-alcoholic steatohepatitis (NASH) contributions increased. The summary exposure value (SEV) for drug use increased by 12% globally, with a dramatic increase of 308% in North America. High-HDI/SDI countries exhibited higher ASR than expected, which may be attributed to aging populations and the rising incidence of metabolic diseases. Projections indicated a rising number of cases but declining ASR for both males and females by 2041. CONCLUSIONS: Tailored prevention strategies are needed to address region-specific risk factors and mitigate the growing burden of liver cancer.