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Ricke, Jens; Klumpen, Heinz Josef; Amthauer, Holger; Bargellini, Irene; Bartenstein, Peter; de Toni, Enrico N.; Gasbarrini, Antonio; Pech, Maciej; Peck-Radosavljevic, Markus; Popovic, Peter; Rosmorduc, Olivier; Schott, Eckart; Seidensticker, Max; Verslype, Chris; Sangro, Bruno; Malfertheiner, Peter (2019): Impact of combined selective internal radiation therapy and sorafenib on survival in advanced hepatocellular carcinoma. In: Journal of Hepatology, Vol. 71, No. 6: pp. 1164-1174
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Background & Aims: Sorafenib is the recommended treatment for patients with advanced hepatocellular carcinoma (HCC). We aimed to compare the efficacy and safety of a combination of sorafenib and selective internal radiation therapy (SIRT) - with yttrium-90 ( Y-90) resin microspheres - to sorafenib alone in patients with advanced HCC. Methods: SORAMIC is a randomised controlled trial comprising diagnostic, local ablation and palliative cohorts. Based on diagnostic study results, patients were assigned to local ablation or palliative cohorts. In the palliative cohort, patients not eligible for TACE were randomised 11:10 to SIRT plus sorafenib (SIRT + sorafenib) or sorafenib alone. The primary endpoint was overall survival (OS;Kaplan-Meier analysis) in the intention-to-treat (ITT) population. Results: In the ITT cohort, 216 patients were randomised to SIRT + sorafenib and 208 to sorafenib alone. Median OS was 12.1 months in the SIRT + sorafenib arm, and 11.4 months in the sorafenib arm (hazard ratio [HR] 1.01;95% CI 0.81-1.25;p = 0.9529). Median OS in the per protocol population was 14.0 months in the SIRT + sorafenib arm (n = 114), and 11.1 months in the sorafenib arm (n = 174;HR 0.86;p = 0.2515). Subgroup analyses of the per protocol population indicated a survival benefit of SIRT + sorafenib for patients without cirrhosis (HR 0.46;0.25-0.86;p = 0.02);cirrhosis of non-alcoholic aetiology (HR 0.63;p = 0.012);or patients 65 years old (HR 0.65;p = 0.05). Adverse events (AEs) of Common Terminology Criteria for AE Grades 3-4 were reported in 103/159 (64.8%) patients who received SIRT + sorafenib, 106/197 (53.8%) patients who received sorafenib alone (p = 0.04), and 8/24 (33.3%) patients who only received SIRT. Conclusion: Addition of SIRT to sorafenib did not result in a significant improvement in OS compared with sorafenib alone. Subgroup analyses led to hypothesis-generating results that will support the design of future studies. Lay summary: Sorafenib given orally is the recommended treatment for patients with advanced hepatocellular carcinoma (HCC). In selective internal radiation therapy (SIRT), also known as radioembolisation, microscopic, radioactive resin or glass spheres are introduced into the blood vessels that feed the tumours in the liver. This study found that the addition of SIRT with m yttrium-loaded resin microspheres to sorafenib treatment in people with advanced HCC did not significantly improve overall survival compared with sorafenib treatment alone. However, the results give an indication of how future studies using this combination therapy in people with advanced HCC could be designed. (C) 2019 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.