Drug-eluting beads versus conventional transarterial chemoembolization for the treatment of unresectable hepatocellular carcinoma: A meta-analysis

Background: Transarterial chemoembolization (TACE) consists of conventional TACE (cTACE) and drug-eluting beads TACE (DEB-TACE). The benefits of the 2 treatments remain controversial. We conduct this meta-analysis to assess the efficacy and safety of the 2 methods for the patients with unresectable hepatocellular carcinoma.Methods: In order to get a sound conclusion, we did thorough search all relevant studies with clear and stringent keyword criteria on the main databases. Objective tumor response rate, overall survival (OS) rate and adverse events were calculated and analyzed by RevMan 5.3 software. The random-effects or fixed-effects model was applied to pool the estimates according to Cochran Q test and I-2 statistics.Results: Twenty-four studies involving 2987 patients were eligible. DEB-TACE significantly improved objective tumor response rate (OR) (risk ratio [RR] = 1.27, 95% confidence interval [CI] [1.08, 1.48]; P = .003). While as for 1-year, 2-year, 3-year, 5-year OS rates, there were no evidences to indicate that DEB-TACE was significantly better than cTACE (RR = 1.05, 95% CI [0.99, 1.11]; P = .08), (RR = 1.02, 95% CI [0.93, 1.11]; P = .68), (RR = 0.92, 95% CI [0.77, 1.10]; P = .37), (RR = 0.92, 95% CI [0.47, 1.80]; P = .81), respectively. Adverse events rate (AE) was also similar in both groups (RR = 1.11, 95% CI [0.99,1.26]; P = .08).Conclusion: This meta-analysis demonstrates that DEB-TACE is not superior than cTACE regarding to OS and AE. However, DEB-TACE still be considered to provide a better objective tumor response rate for patients with unresectable hepatocellular carcinoma.