Cancer care is undergoing a shift from a 'one-size-fits all' approach to more personalised medicine. One way of personalising cancer treatments is through biomarkers: molecules or biochemical changes found in the patient's tissues and body fluids. This book reflects upon the promise of cancer biomarkers and asks questions such as: How may the complexity of cancer biology impede the robustness of biomarkers in the clinic? How should one draw the line between the various sub-groups of patients for personalised treatment? How can one evaluate the cost-effectiveness and fairness of personalised cancer treatments? By bringing together authors from the fields of science and technology studies, medical ethics and philosophy, health economics and oncology, the book aims to give a critical yet accessible overview of some of the key social, ethical and economic issues that surround cancer biomarkers. "The book should be required reading for oncologists, medical students, graduate students and especially for those who make policy decisions regarding the use and reimbursement of cancer biomarkers." - Bruce Zetter, Charles Nowiszewski Professor of Cancer Biology in the Department of Surgery, Harvard Medical School