Brii Biosciences Ltd. has announced late-breaking data from its ongoing Phase 2 ENSURE study, evaluating a novel sequential combination treatment strategy for hepatitis B virus (HBV). The 24-week post end of treatment $(EOT)$ follow-up results from Cohort 4 were presented at the American Association for the Study of Liver Diseases (AASLD) The Liver Meeting®, held in Washington D.C. from November 7-11, 2025, and were simultaneously published in Nature Medicine. The study assesses the use of the company's therapeutic vaccine, BRII-179, in combination with elebsiran and PEG-IFNα. Additional Phase 2b trials, including the ENRICH and ENHANCE studies, are underway, with EOT data expected to be presented in 2026. Brii Biosciences noted that the combination treatment was generally safe and well-tolerated, but cautioned there is no assurance the therapies will ultimately be successfully developed or marketed.