Norio Akuta, Fumitaka Suzuki, Yuya Seko, Yusuke Kawamura, Hitomi Sezaki, Yoshiyuki Suzuki, Tetsuya Hosaka, Masahiro Kobayashi, Tasuku Hara, Mariko Kobayashi, Satoshi Saitoh, Yasuji Arase, Kenji Ikeda, Hiromitsu Kumada – 14 July 2012 – The impact of amino acid (aa) 70 substitution in the core region on hepatocarcinogenesis and survival for liver‐related death in patients of hepatitis C virus (HCV) genotype 1b (HCV‐1b), who had not received antiviral therapy, is unknown. The relationships among aa 70 substitution, IL28B genotype, and hepatocarcinogenesis are also not clear.