APOB and hepatocellular carcinoma: The findings indicated that decreased APOB levels in patients with HCC were linked to unfavorable prognostic results, such as OS (HR = 0.50, 95% CI 0.35–0.70, P = 5.9e-5; Fig. 4A), PFS (HR = 0.69, 95% CI 0.51–0.93, P = 0.014; Fig. 4B), RFS (HR = 0.62, 95% CI 0.44–0.89, P = 0.0076; Fig. 4C), DSS (HR = 0.52, 95% CI 0.33–0.82, P = 0.004; Fig. 4D).