Book excerpt: This book provides a detailed overview of B-cell directed therapies in patients with rheumatic and systemic autoimmune diseases, including rheumatoid arthritis, systemic lupus erythematosus, Sjögren syndrome, ANCA-associated vasculitis and cryoglobulinemia. Organ-specific autoimmune diseases are discussed with respect to the use of B-cell directed therapies in neurological autoimmune diseases and autoimmune cytopenias. Situations in which B-cell targeted therapy may be indicated are identified, thereby offering comprehensive support for therapeutic decisions on the basis of the latest published evidence. The book also offers a valuable reference tool for rheumatologists, internists, nephrologists, immunologists, and all specialists involved in the multidisciplinary care of patients with rheumatic and systemic autoimmune diseases.