• Vir Biotechnology's MARCH Phase 2 trial shows that tobevibart and elebsiran, alone or with PEG-IFNα, led to HBsAg loss in chronic hepatitis B patients.
• In patients with low baseline HBsAg, 39% achieved HBsAg loss with tobevibart and elebsiran, while 46% achieved it with the triplet regimen.
• The safety and tolerability profiles of both regimens were consistent with prior studies, with mostly mild to moderate treatment-emergent adverse events.
• Functional cure data from the 24-week follow-up are expected in Q2 2025, which will determine the next steps in clinical development.