Researchers report results from two international studies evaluating an experimental treatment for chronic hepatitis B. In the studies, participants receive the investigational drug for about six months. After stopping therapy, a subset of patients shows a marked reduction in hepatitis B virus levels to very low or undetectable levels, without signs of the virus rebounding. Sources describe this as a potential “functional cure,” meaning patients no longer require ongoing treatment to keep the virus suppressed, rather than fully eradicating the virus from the body. Across the trials, results are described as occurring in roughly one in five participants (about 20%). The studies are positioned as early evidence that some patients may achieve durable control of infection through immune-mediated suppression. The reporting also notes that the drug is experimental and that longer follow-up and further research are needed to determine durability, safety, and how broadly the approach applies to different patient groups.