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Clinical data
  • N/A
Legal status
Legal status
  • Development terminated
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass653.568 g/mol g·mol−1
3D model (JSmol)

Deleobuvir (formerly BI 207127) was an experimental drug for the treatment of hepatitis C. It was being developed by Boehringer Ingelheim. It is a non-nucleoside hepatitis C virus NS5B polymerase inhibitor. Deleobuvir was tested in combination regimens with pegylated interferon and ribavirin, and in interferon-free regimens with other direct-acting antiviral agents including faldaprevir.

Data from the SOUND-C2 study, presented at the 2012 AASLD Liver Meeting, showed that a triple combination of deleobuvir, faldaprevir, and ribavirin performed well in HCV genotype 1b patients.[1] Efficacy fell below 50%, however, for dual regimens without ribavirin and for genotype 1a patients.

These results were confirmed in the SOUND-C3 study, presented at the 2013 APASL Liver Conference, which found that 16-week triple therapy with deleobuvir + faldaprevir + ribavirin gave 95% SVR12 in HCV genotype 1b patients but poor virological response in genotype 1a.[2]

In December 2013, Boehringer Ingelheim announced that the development of deleobuvir would not be continued since recent findings from phase III trials did not suggest sufficient efficacy.


  1. ^ Interferon-free hepatitis C treatment with faldaprevir proves safe and effective in people with cirrhosis. Alcorn, K. 20 November 2012.
  2. ^ S Zeuzem; J-F Dufour; M Buti; V Soriano; R Buynak; P Mantry; J Taunk; JO Stern; R Vinisko; J-P Gallivan; WO Bocher & FJ Mensa. Interferon-free treatment with faldaprevir, deleobuvir (BI 207127) and ribavirin in SOUND-C3: 95% SVR12 in HCV GT-1b. 23rd Conference of the Asian Pacific Association for the Study of the Liver (APASL) 6–9 June 2013. Retrieved 12 Sep 2013.