253 Background: Transarterial chemoembolization (TACE) is the palliative treatment for patients with unresectable HCC. TACE-induced ischemic injury is known to increase circulating VEGF and related with poor prognosis.The aim of this study is to evaluate efficacy and safety of combined TACE with sorafenib, VEGFR inhibitor in unresectable HCC patients. Methods: This study is a non-randomized, open-labeld, single-arm, phase II investigator-initiated clinical study. Estimated number of subjects was 50 under the assumption of 3.2 months of median time to progression (TTP) with TACE alone. All patients are Child-Pugh class A or superb B. Sorafenib begins to be administered on 3 days after the first session of TACE and will be subsequently administered up to 24 weeks. Efficacy of TACE was evaluated after 4 weeks from TACE by dynamic CT. Repeated TACE is performed “on demand” in case of PR or SD according to CT/MRI evaluation. Results: A total of 50 patients were enrolled for this interim analysis. Male was 84% and mean age was 61.5years. Causes of underlying chronic liver disease were HBV in 28 patients (65.1%). Patients were categorized into modified UICC stage II (15, 30.0%), III (24, 48.0%) and IVA (11, 22.0%). Median follow-up period was 5.3 months (range, 1.0–13.1). The size of index lesions was ranged from 1.0 cm to 13.1 cm, and number of lesions was between 1 and 5. Number of TACE sessions was 1.0 (range, 1–4). Common adverse events (AE) during sorafenib therapy were elevation of serum AST/ALT (96.8%), hypocalcemia (90.0%), thrombocytopenia (84.0%), and hyperbilirubinemia (76.0%). Hand-foot skin reaction was most frequently observed among AE of NCI CTCAE grade 3 or higher (40.0%), followed by elevation of serum ALT (38.0%). Dose reduction of sorafenib was needed most commonly due to hand-food skin reaction (n=29). Median TTP was 5.1 months (range, 3.8–6.3). Conclusions: Adverse events were approved as acceptable by independent monitoring system. Preliminary evidence of antitumor activity was also observed. This trial can be safely performed with close monitoring in inoperable and/or unresectable HCC patients. No significant financial relationships to disclose.
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