Breast cancer is the most common type of cancer amongst the women all over the world. This book aims to serve the interest, of understanding the genetics and epigenetics of breast cancer. Here we have surveyed the thoughtful and far-reaching consequences that have arisen from the significant approaches towards the understanding of the genetic and epigenetic basis of breast cancer. This book presents an unparalleled source of information and will be of immense value to all clinical geneticists, oncologists and healthcare professionals involved in screening and counselling programmes as well as the research oriented students.