SinoMab BioScience Limited, a biopharmaceutical company, engages in the research, development, manufacture, and commercialization of therapeutics for the treatment of immunological diseases primarily monoclonal antibody (mAb)-based biologics. Its flagship product is SM03, a first-in-target anti-CD22 mAb, which is in Phase III clinical trial for the treatment of rheumatoid arthritis (RA), as well as in various clinical stages for other immunological diseases, such as systemic lupus erythematosus (SLE), Sjogren’s syndrome (SS), and non-Hodgkin's lymphoma (NHL). The company also focuses on developing SN1011, a Bruton’s tyrosine kinase inhibitor, which is in Phase II clinical trial for the treatment of pemphigus, as well as in phase 1 clinical trial to treat multiple sclerosis, SLE, and NMOSD. Its products under the preclinical stage comprise SM17 for the treatment of asthma, atopic dermatitis, and idiopathic pulmonary fibrosis; SM06 to treat RA, SLE, NMOSD, and SS; SM09 for the treatment of NHL and RA; and TNF2 for the treatment of autoimmune diseases. It operates in Mainland China, the Cayman Islands, and Hong Kong. SinoMab BioScience Limited was incorporated in 2001 and is headquartered in Tai Po, Hong Kong.