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| Formula | C34H33BrN6O3 |
| Molar mass | 653.581 g·mol−1 |
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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.[ citation needed ]
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.[ citation needed ]
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.[ citation needed ]