Effect of achieving sustained virological response before hepatitis C virus-related hepatocellular carcinoma occurrence on survival and recurrence after curative surgical microwave ablation
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Background and aim
The effects of achieving sustained virological response (SVR) on recurrence and survival after curative treatment in patients with hepatitis virus C (HCV)-related hepatocellular carcinoma (HCC) is unclear. This study examined the influence of SVR achievement by interferon therapy before HCC occurrence on recurrence and survival.
This retrospective study included 518 patients who underwent surgical microwave ablation for initial HCV-related HCC between January 2001 and December 2015. Thirty-four patients had achieved SVR (SVR group) and 484 patients had not (control group). Clinical characteristics and long-term outcomes were compared between the two groups.
Overall survival rates at 5 and 10 years after curative ablation were 95.8 and 80.4% in the SVR group, and 50.7 and 23.4% in the control, respectively (p < 0.0001). Recurrence-free survival rates at 5 and 10 years were 68.7 and 26.4% in the SVR group, and 24.5 and 7.8% in the control group, respectively (p < 0.0001). Multivariate analyses revealed that achieving SVR as an independent prognostic factor for both overall and recurrence-free survival. In the SVR group, the 5-year recurrence-free survival rates for patients with an interval of 5 years or fewer (n = 24) vs. more than 5 years (n = 10) between achieving SVR and curative ablation were 58.7 and 88.9%, respectively (p = 0.03).
Achieving SVR before HCC occurrence allowed a favorable clinical outcome after curative ablation in HCV-related HCC patients. Patients with HCC that occurred more than 5 years after achieving SVR had longer recurrence-free survival.
KeywordsHepatitis C Sustained virological response Microwave ablation Hepatocellular carcinoma Interferon
Study conception and design: TR, YT, and HS. Acquisition of data: TR, YW, MT, HM, MY, and KM. Analysis and interpretation of data: TR, YT, and HS. Drafting of manuscript: TR. Critical revision: YT, and HS.
No funding was received for this study.
Compliance with ethical standards
Conflict of interest
Tomoki Ryu, Yuko Takami, Yoshiyuki Wada, Masaki Tateishi, Hajime Matsushima, Munehiro Yoshitomi, Kazuhiro Mikagi, and Hideki Saitsu declare that they have no conflicts of interest.
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