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      • Sustained Viral Response Following Treatment with Direct Acting Antiviral Agents for Chronic Hepatitis C and the Risk of Hepatocellular Carcinoma

        ( K Rajender Reddy ),( Marc Bourliere ),( Kosh Agarwal ),( Eric Lawitz ),( Leia Kim ),( Anu Osinusi ),( Kathryn Kersey ),( Gerald Crans ),( Stephanie Moody ),( Liyun Ni ),( Diana M. Brainard ),( John 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1

        Aims: Sustained virologic response (SVR) after interferon (IFN)-based treatment for HCV infection is associated with reduced risk of hepatocellular cancer (HCC), although the risk is not eliminated. Less is known regarding the risk of de novo HCC following SVR with IFN-free direct acting antiviral (DAA) therapy. In this analysis, a review of incident HCC in patients treated with SOF-containing regimens was performed. Methods: Data from Gilead HCV clinical trials (from treatment start to 24 weeks post-treatment) and registry studies (3 to 5 year follow-up observation) were analyzed to evaluate the incidence of de novo HCC. The clinical database was searched to identify adverse events of liver tumors; the occurrence of HCC is recorded at each visit in the registry studies. Incidence rates and exposure-adjusted incidence rates, time to development, and risk factors for development of HCC were assessed in patients with and without cirrhosis (compensated and decompensated) who received IFN- containing (Peg- IFN+RBV±SOF) vs IFN-free treatment (SOF, ledipasvir/SOF, SOF/velpatasvir ± RBV), and SVR vs no SVR. Results: In the clinical trial database, 0.3% (36 of 13,525) patients had AEs of HCC or suspected HCC while in the registry study database, 0.5% (33 of 6675) were reported to have HCC. The rate was similar in non-cirrhotic patients who achieved SVR with an IFN-containing vs IFN-free regimen (0.09 vs 0.03 per 100 patient years of follow-up, respectively); few patients with compensated cirrhosis and none with decompensated cirrhosis received IFN-containing regimens. Among subjects treated with IFN-free regimens, higher rates were observed with advanced liver disease and non SVR (see table). Conclusions: Data from the Gilead clinical trial and registry study databases show incidence of HCC in subjects treated with IFN-free regimens is similar to that reported in the IFN-era in similar populations. While SVR significantly reduces the risk of HCC, the risk is not completely eliminated, particularly among patients with decompensated cirrhosis.

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