Customized Cancer Treatment is the first book for the layperson on chemosensitivity testing. This is a laboratory procedure by which patients and their doctors can discover which drugs are mostly like to work for them and which to avoid. Chemosensitivity testing is very effective at finding the best drugs for each individual. It is a form of personalized treatment. According to Dr. Robert Nagourney, No cancer patient should begin treatment without first reading this book.