Study 204, which is fully enrolled and conducted in collaboration with Arbutus Biopharma, is an open-label Phase 2 triple combination study evaluating VBR + NrtI + Arbutus' investigational RNAi (AB-729) versus VBR + NrtI and NrtI + AB-729. In consultation with Arbutus, the companies intend to continue the study and evaluate the primary endpoints of safety and tolerability of the combination regimen.