RESEARCH TRIANGLE PARK, N.C.--(BUSINESS WIRE)--Drug discovery company SCYNEXIS, Inc. today presented positive data from an in vitro study evaluating the antiviral activity of SCY-635 in combination with approved and investigational non-nucleoside polymerase inhibitors, nucleoside polymerase inhibitors, protease inhibitors, ribavirin and interferon alpha 2b. SCY-635 exhibited additive to synergistic antiviral activity when combined with each of the six compounds tested and all combinations exhibited greater-than-anticipated antiviral activity. SCY-635, a novel cyclophilin inhibitor, represents a new pharmacological class of inhibitors of hepatitis C virus (HCV) replication. The results were presented in a poster session at the 60th Annual Meeting of the American Association for the Study of Liver Diseases (AASLD) in Boston on November 3, 2009.