Xencor is a California-based biopharmaceutical company focused on developing engineered monoclonal antibodies and cytokine therapeutics to treat cancers and autoimmune diseases. The company's current product offerings include Sotrovimab, Ultomiris, and Monjuvi, and it is actively developing several other drugs in various stages of clinical trials. Xencor aims to reduce blood serum levels of IgE, treat autoimmune diseases, and develop treatments for Alzheimer's disease, mild cognitive impairment and depression.