There has been an explosion of knowledge and enormous progress in the fundamental understanding of the biology of cancer in recent years. This has included the realisation that cancer occurs when normal cellular functions are disturbed leading to a malignant phenotype. Much research has focused on understanding the types of disturbances that can occur, the contribution that these abnormalities can make to the development and behavior of particular cancers and more recently, the recognition that these cellular and genetic abnormalities can provide rational targets for new therapeutic...