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Assembly Biosciences Doses First Two Participants in Phase 2 Study of Oral NTCP Inhibitor ABI-6250 for Chronic Hepatitis Delta Virus

$ASMBPress releaseOct 29, 2026, 4:00 PM ETRead the release

Assembly Biosciences dosed the first two participants in a Phase 2 study of ABI-6250, its investigational oral NTCP inhibitor for chronic hepatitis delta virus infection. The multicenter, open-label study (NCT07762027) will enroll approximately 80 participants across two once-daily oral dose levels, evaluating safety, PK, and antiviral activity, with initial data expected in the fourth quarter of 2027. Under Assembly Bio's 12-year collaboration with Gilead Sciences, Gilead can license ABI-6250 through Phase 2 completion for a $90 million opt-in fee, providing a clear strategic and financial path for the asset.

Key figures

Drug Name
ABI-6250
Phase Of Trial
Phase 2
Gilead opt in fee
$90 million
Phase1a half life
~4 days
Expected enrollment
~80 participants with chronic HDV
Initial data timing
Q4 2027

AI analysis

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