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Vir Biotechnology Announces Expanded Phase 2 SOLSTICE Data for Elebsiran and Tobevibart in Chronic Hepatitis Delta, Showing Deep and Sustained Viral Suppression, and Exploratory Finite Treatment Data

$VIRPress releaseNov 8, 2026, 4:45 PM ETRead the release

Vir Biotechnology presented expanded Phase 2 SOLSTICE data showing 100% (28/28) of patients completing 96 weeks of elebsiran/tobevibart combination therapy achieved undetectable HDV RNA, with 89% showing improved or stable liver stiffness. In an exploratory finite-treatment analysis, all 10 patients who discontinued therapy after at least 96 weeks of undetectable virus achieved SVR12, with no viral rebound or ALT flares, suggesting potential curative intent for the regimen. The data accompany same-day topline Phase 3 ECLIPSE 1 results that met all study endpoints, supporting a planned mid-2027 U.S. FDA filing.

Key figures

Drug Name
elebsiran + tobevibart
Phase Of Trial
Phase 2 (SOLSTICE); Phase 3 ECLIPSE program
Svr24
7
Svr48
1
Fda filing target
mid-2027
Week96 undetectable
28/28 (100%)
Finite treatment patients
10/10 achieved SVR12
Liver stiffness improved or stable
24/27 (89%)
Cirrhotic patients in finite analysis
7

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