The Utz lab focuses on the immune system of patients with immunodeficiency disorders, infections, and autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), systemic sclerosis (scleroderma), myositis, primary biliary cirrhosis (PBC), Sjögren's disease, insulin dependent diabetes (type I diabetes or IDDM), multiple sclerosis (MS), inflammatory bowel disease (IBD), Castleman’s disease, and mixed connective tissue disease (MCTD).