Primary immunodeficiency diseases, first recognized 60 years ago, are inherited disorders that affect human adaptive and innate immunity. In most cases, affected individuals experience recurrent infections, but they may also suffer from autoimmune diseases and malignancies. This third edition of Primary Immunodeficiency Diseases provides readers with the historic and scientific background, clinical presentations, immunologic characteristics, and the molecular/genetic underpinnings of this rapidly enlarging class of diseases. With up-to-date diagnostic tools and therapeutic options - from prophylactic anti-infective measures to hematopoietic stem cell transplantation and gene therapy - this volume will remain an authoritative resource on this increasingly important area.