PRINCETON, New Jersey and MILAN, Italy, April 24 /PRNewswire/ --
-- Two 4-week cohorts will be enrolled to evaluate R7128 1500mg BID in HCV genotypes 2 and 3 prior non-responders and R7128 1000mg BID in HCV genotype 1 treatment-naive patients --
-- Conference call scheduled for Friday, April 25, 2008 at 1:00 PM ET (US) and 7:00 PM CEST (Milan) --
Pharmasset, Inc. (Nasdaq: VRUS) will enroll two additional cohorts in the on-going Phase 1 study protocol to evaluate 4 weeks of combination therapy with R7128. R7128, a prodrug of PSI-6130, is a nucleoside analogue polymerase inhibitor of hepatitis c virus (HCV) that is being developed through Pharmasset's collaboration with Roche.