Extensive research into the molecular mechanisms of cancer has heralded a new age of targeted therapy. The field of precision cancer therapy is now growing rapidly, and the advances being made will mean significant changes in the treatment algorithms for cancer patients. Numerous novel targets that are crucial for the survival of cancer cells can be attacked by small molecules such as protein tyrosine kinase inhibitors. An accompanying volume addresses the use of small molecules in oncology, and the two volumes together represent the third edition of the book originally published under the same title.