WATERTOWN, Mass., April. 4, 2012 /PRNewswire/ --Enanta Pharmaceuticals, Inc., a research and development company dedicated to creating best-in-class small molecule drugs in the infectious disease field, announced today that key data from two of its hepatitis C (HCV) programs will be presented at the International Liver Congress™ 2012 (ILC2012), the annual meeting of the European Association for the Study of the Liver (EASL), April 18-22 in Barcelona, Spain. Oral presentations will discuss Phase 2 results from "Pilot" and "Co-Pilot", which investigated two different interferon-free combination regimens containing ABT-450, the lead candidate from Enanta's collaborative HCV protease inhibitor program with Abbott. ABT-450 will be included in two additional poster presentations and a third poster presentation will report in vitro data from Enanta's proprietary nucleotide HCV polymerase inhibitor program. Abstracts are available at www.easl.eu.
Phase 2 Data Highlights
In the study known as "Co-Pilot," different doses of ABT-450/r, plus ABT-333 and ribavirin administered for 12 weeks showed sustained virological response at 12 weeks post treatment (SVR12) in 93 percent and 95 percent of treatment-naive genotype 1 (GT1) patients. In these patients, response was independent of HCV subtype, host IL28B genotype or dose of ABT-450/r. In addition, SVR12 was achieved in 47 percent of patients who were previous non-responders to past HCV treatment.
In a separate study, known as "Pilot", 91 percent of genotype 1 infected, treatment-naive patients taking ABT-450/r and ABT-072 combined with ribavirin administered for 12 weeks, achieved sustained viral response at 24 weeks (SVR24).
"The results from Pilot and Co-Pilot showed very encouraging levels of sustained response and suggest that ABT-450 could be an important component in new