The scope of this contributed volume is to provide an overview of the latest translational research in the field of lupus pathogenesis, with particular emphasis on how these discoveries progress in parallel with therapeutic drug development. Systemic lupus erythematosus (SLE) is a multifaceted disease with a number of well-defined immune pathways that are dysregulated, resulting in an immune-mediated chronic inflammatory injury at target organs. As knowledge of these pathways evolves to provide opportunities for targeted drug therapy and lays the foundation for personalized medicine, clinicians and researchers need to keep up with the ever-expanding medical literature. This book will critically appraise the current understanding of important immunological pathways that contribute to the pathogenesis of lupus. We will review the role of interferons as part of the innate immune defects that perpetuate the loss of self-tolerance in SLE.