The feasibility of combined transcatheter arterial chemoembolization and radiotherapy for advanced hepatocellular carcinoma

Background & Aims Sorafenib is regarded as the standard treatment of care in Barcelona Clinic Liver Cancer (BCLC) stage C patients. However, the modest overall survival (OS) and disease control rate warrants for a better treatment modality. This study aimed to investigate the feasibility of combined transarterial chemoembolization and radiotherapy (TACE+RT) in comparison with sorafenib for advanced hepatocellular carcinoma (HCC). Methods and Materials From 2007 to 2011, a total of 116 patients with locally advanced HCC were retrospectively enrolled. Sixty-seven patients treated with TACE+RT were compared with 49 patients treated with sorafenib. Propensity score matching generated a matched cohort composed of 27 patients from each group. OS was the primary endpoint for the analysis. Results At baseline, the sorafenib group had a tendency for a tumour size >= 10cm, presence of lymph node metastasis and main portal vein tumour thrombosis compared to the TACE+RT group. The OS in the TACE+RT group was significantly longer compared to the sorafenib group (14.1months vs. 3.3months, P<0.001). In the propensity score-matched cohort, baseline characteristics did not differ between the two groups. The TACE+RT group showed prolonged OS compared to the sorafenib group (6.7months vs. 3.1months, P<0.001). Multivariate analysis revealed that TACE+RT was the only independent prognostic factor associated with survival in the propensity score-matched cohort (HR=0.172, P<0.001). Conclusions The OS of TACE+RT was longer compared to sorafenib treatment in locally advanced HCC patients without distant metastasis. Further prospective studies are warranted to confirm these findings.