Cancer Genomics is the study of the genetic changes that occur in cancer cells. It involves analyzing the DNA, RNA, and proteins of tumors to identify mutations and alterations that drive cancer development and progression. This information helps researchers understand how cancer starts and evolves, leading to better diagnostic tools and targeted therapies. By examining the genomic profiles of different cancers, scientists can classify tumors more accurately and predict how they will respond to treatments. Personalized medicine is a key outcome of cancer genomics, allowing for tailored therapies based on an individual's unique genetic makeup, improving treatment effectiveness and reducing side effects.