The randomized, double-blind, placebo-controlled Phase 1a/b study is designed to evaluate first the safety, tolerability and pharmacokinetics (PK) of single ascending doses (SAD) and multiple ascending doses (MAD) of EDP-514 in healthy subjects (Part 1), and then the antiviral activity of EDP-514 in nucleos(t)ide-reverse-transcriptase (NUC)-suppressed patients with chronic HBV infection (Part 2).
The study plans to enroll approximately 98 subjects and to evaluate up to 6 dose cohorts, with EDP-514 administered orally, once daily.
EDP-514 is an HBV core inhibitor (a/k/a capsid-assembly modulator or CpAM); ENTA’s main competition in this arena is ASMB (#msg-148672065, #msg-148259315).
ENTA now has drug candidates in the clinic for NASH/PBC (EDP-305); RSV (EDP-938); and HBV (EDP-514). The R&D costs for these programs are easily covered by ENTA’s royalty income from Mavyret, the world’s largest-selling drug for HCV.