Second interim analysis of GIDEON (Global Investigation of Therapeutic Decisions in Unresectable HCC and of Its Treatment with Sorafenib): U.S. versus global perspective on patient and disease characteristics, treatment history, and sorafenib use.

Abstract

278 Background: GIDEON is a global, prospective, noninterventional study of patients (pts) treated with sorafenib (SOR) for unresectable hepatocellular carcinoma (uHCC). Regions evaluated included US, Europe, Japan, Asia Pacific, and Latin America. Detailed regional data were presented by Kudo et al (ILCA 2011, abstr 0-030). Data from the second US interim analysis are compared to global results. Methods: Eligible pts had uHCC and were treated with SOR. Demographics, disease etiology, treatment history, and SOR dosing were compared in a descriptive, preplanned subgroup analysis. Results: Global and US safety populations comprised 1571 and 313 pts, respectively. In the US, hepatitis B was less common (18% vs 37% global) whereas hepatitis C was more frequent (53% vs 32% global). Alcoholic liver disease etiology was higher in US pts (41% vs 29% global). US pts were diagnosed with later-stage disease, but fewer US pts had documented BCLC and Child-Pugh status. Fewer US pts had an ECOG PS 0 at start of SOR (28% vs 40% global). Rates of prior surgery and locoregional treatment were similar in US (11% and 49%, respectively) and global pts (19% and 55%, respectively). US pts treated with TACE (n = 116) underwent fewer TACE procedures (≥3: 13.8% vs 38.9% global); most (59%) TACE-treated pts in the US received 1 treatment. In US vs global pts, median time from prior surgery to start of SOR was 10 months (range 1-61) vs 14 months (range 1-181) and median time from last TACE to start of SOR was 3.2 months vs 3.1 months. Conclusions: Disease characteristics and treatment patterns for pts with uHCC in the US differ from those in the global population. US pts enrolled in GIDEON (ie, receiving SOR) have differing etiologies of liver disease and have a greater proportion of hepatic dysfunction, likely accounting for worse performance status. [Table: see text]