The clinical applications of human gene therapy have been particularly fruitful in oncology, and in the last few decades there has been explosive growth in understanding of the genetic lesions leading to neoplasia. This volume in the series Cancer: Clinical Science in Practice reviews progress in the basic and clinical science of gene therapy in oncology, and looks forward to future developments. It considers what has worked and what has not in the fast-evolving field of gene therapy, drawing on laboratory studies and clinical trials, including the work of the contributors themselves. Topical and authoritative, volumes in this series are intended for a wide audience of clinicians and researchers with an interest in the applications of biomedical science to the understanding and management of cancer.