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New potent HBV replication inhibitors for the management of chronic hepatitis B are needed

With several drugs in use that inhibit the hepatitis B virus polymerases (nucleos(t)ide analogues (or NUCs)), some argue that new direct-acting antiviral drugs, and new NUCs in particular, are not necessary. Here, we make the counter-argument that additional direct-acting antiviral drugs that can potently suppress hepatitis B virus replication, ideally via distinct mechanisms, are still needed and can provide additional therapeutic benefits.

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Fig. 1: Clinical phase investigational HBV drugs and drug programmes that have been discontinued since 2017.

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Acknowledgements

The authors thank J. Marchand for help in manuscript preparation. The authors also thank X. Hong and C. Freije for helpful feedback.

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Correspondence to Timothy M. Block.

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Competing interests

T.M.B. is co-founder and Chair of the Hepatitis B Foundation and is on the board of Hepion, Harlingene Life Sciences, Cirna Diagnostics and SAB: Excision. C.A.C. is President of the Hepatitis B Foundation, which has received grants from Gilead Sciences, GSK, Roche, Dynavax and Moderna, all outside of the submitted work. J.J.F. declares competing interests with Abbott, Abbvie, Bluejay, Gilead, GSK, Pfizer, Roche and Vir. R.G.G. is the Medical Director at the Hepatitis B Foundation, and has consulted for or received honoraria from Abacus, Aligos, Altimunne, Antios, Dynavax, Enyo, Gilead Sciences, GlaxoSmithKline, Janssen, Precision BioSciences, Tune Therapeutics, Venatorx and Virion. J.-T.G. is co-founder of RimmSting Life Sciences, is a member of the scientific advisory board for GeneLancet Biosciences, and is a scientific consultant for Brii BioSciences, Argo Pharmaceuticals and ARV Technologies. I.M.J. has acted as a consultant or advisor for Aligos Therapeutics, Altimmune, Arbutus Biopharma, Arrowhead Pharmaceuticals, Assembly Biosciences, Biomarin Pharmaceuticals, Bristol Myers Squibb, Gilead Sciences, GSK, Intercept Pharmaceuticals, Janssen Pharmaceuticals, Madrigal Pharmaceuticals, Merck, Moderna, NeuroBo Pharmaceuticals, Novo Nordisk, Precision Biosciences and RedHill Biopharma, and has received grants or research support from Astrazeneca, Assembly Biosciences, AusperBio, Bristol Myers Squibb, Cymabay Therapeutics, Eiger Biopharmaceuticals, Eli Lilly, Enanta Pharmaceuticals, Genfit, Genkyotex, Gilead, GSK, Inventiva, Intercept Pharmaceuticals, Ipsen, Janssen Pharmaceuticals, Madrigal, Merck, Mirum Pharmaceuticals, Novo Nordisk and the Rockefeller Institute (NIH supported). M.S. has received grants from Grifols, GSK, Vir and the National Institutes of Health, and has received personal fees from AbbVie, Aligos, Immunocore, Gilead Sciences, GSK, Pfizer, Virion and Vir. F.Z. consults for Aligos, Antios, Arbutus, Assembly, Enanta, Enochian, Gilead, GSK, Roche, Viravaxx and Zhimeng, and has received research grants from Assembly, Beam, Janssen and Viravaxx. H.J.A., P.D.B., C.M.R., W.M.S. and C.LT. declare no competing interests.

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Block, T.M., Guo, JT., Zoulim, F. et al. New potent HBV replication inhibitors for the management of chronic hepatitis B are needed. Nat Rev Gastroenterol Hepatol 22, 150–151 (2025). https://doi.org/10.1038/s41575-025-01037-z

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