Biocytogen Pharmaceuticals (Beijing) Co., Ltd., a biotechnology company, engages in the research and development of antibody-based drugs in the People's Republic of China, the United States, and internationally. Its core products are YH001, a recombinant humanized anti-cytotoxic t-lymphocyte associated protein 4 immunoglobulin G1 (IgG1) monoclonal antibody, which has completed Phase I clinical trial for the treatment of pat