The book provides an overview of current knowledge and discusses some of the unanswered questions at the forefront of research on the key concepts in DNA Repair. This book is a collection of several chapters divided into various distinct sections. Each chapter has been researched by leading experts in their respective fields. The range of the book varies from the DNA damage response and DNA repair methods to transformational characteristics of DNA repair, providing a picture of present perceptions of the DNA repair procedure to roles of DNA repair gene mutations in carcinogenesis and neurodegeneration. This book is a collection of contemporary works on DNA injury and the associated cellular response.