This book discusses the contribution of genetics and epigenetics alterations in the initiation, development, and recurrence of breast cancer. It also reviews the potential of translating the epigenetic alterations into diagnosis, prognosis, and breast cancer therapy. The initial chapters explore the epigenetics, etiology, and conventional treatment strategies for breast cancer. The subsequent chapters discuss the genetic landscape and cover three main epigenetic modulation mechanisms; histone modification, DNA methylation, and miRNA silencing. Further, the book explores the potential of epigenetic drugs in treating breast cancer. Lastly, it covers the phytochemicals targeting epigenetic modulators in breast cancer treatment. This book is an essential source for researchers and practitioners