Brii Biosciences Limited engages in the research and development of therapies for the treatment of infectious and central nervous system diseases primarily in China and the United States. The company develops BRII-179, BRII-835, and BRII-877, which are in Phase 2 the development of a functional cure for HBV for Hepatitis B; BRII-179, a recombinant protein-based HBV immunotherapeutic candidate that is in Phase 2; and BRII-73