Ionis Pharmaceuticals Inc.
Ionis Pharmaceuticals Announces Positive Pivotal Data for Bepirovirsen in Chronic Hepatitis B Treatment
Summary
On May 28, 2026, Ionis Pharmaceuticals, Inc. announced that its partner GSK reported positive pivotal data for bepirovirsen, an investigational antisense oligonucleotide for the treatment of chronic hepatitis B (CHB). The Phase 3 trials, B-Well 1 and B-Well 2, showed that six-month treatment with bepirovirsen achieved a statistically significant and clinically meaningful 19% functional cure response rate in the overall study population and 26% in participants with lower viral activity, compared to 0% with standard of care. The trials also demonstrated an acceptable safety and tolerability profile. Bepirovirsen is currently under priority review by the U.S. Food and Drug Administration (FDA) and regulatory authorities in Europe, Japan, and China.
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About Ionis Pharmaceuticals Inc.
Ionis Pharmaceuticals Inc. is a biotechnology company focused on discovering and developing RNA-targeted therapeutics. The primary mission of Ionis is to harness its expertise in antisense oligonucleotide technology to address complex genetic disorders. Ionis is pioneering in the field of RNA-targeted drug discovery, aiming to treat a wide range of diseases, including neurological, cardiovascular, metabolic, and cancer-related conditions. Notably, the company has a robust pipeline of drugs in various stages of development and partnerships with leading pharmaceutical companies to expand the reach and impact of its therapeutic discoveries. As an innovative entity in the biotechnology sector, Ionis Pharmaceuticals plays a significant role in advancing medical treatments that target the underlying genetic causes of diseases, thereby offering new hope and potential solutions to patients worldwide. Its advancements contribute substantially to the growth and evolution of personalized medicine, emphasizing the importance of genetic research in modern healthcare.
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