Comment on

• Dual therapy with the nonstructural protein 5A inhibitor, daclatasvir, and the nonstructural protein 3 protease inhibitor, asunaprevir, in hepatitis C virus genotype 1b-infected null responders.

  Chayama K, Takahashi S, Toyota J, Karino Y, Ikeda K, Ishikawa H, Watanabe H, McPhee F, Hughes E, Kumada H. Chayama K, et al. Hepatology. 2012 Mar;55(3):742-8. doi: 10.1002/hep.24724. Epub 2012 Jan 30. Hepatology. 2012. PMID: 21987462 Clinical Trial.
• The protease inhibitor, GS-9256, and non-nucleoside polymerase inhibitor tegobuvir alone, with ribavirin, or pegylated interferon plus ribavirin in hepatitis C.

  Zeuzem S, Buggisch P, Agarwal K, Marcellin P, Sereni D, Klinker H, Moreno C, Zarski JP, Horsmans Y, Mo H, Arterburn S, Knox S, Oldach D, McHutchison JG, Manns MP, Foster GR. Zeuzem S, et al. Hepatology. 2012 Mar;55(3):749-58. doi: 10.1002/hep.24744. Hepatology. 2012. PMID: 22006408 Clinical Trial.