This is a branch of genomics which deals with the genomic content of the host. How the genomes in the host affect the carcinogenesis and what will happen if simple changes occur in these, what can be done to prevent this from happening or to cure the same. Genomics is the investigation of grouping of the letters in your DNA and how each series of letters passes data to enable every cell in your body to work legitimately. In tumor cells, little changes in the hereditary letters can change what a genomic word or sentence implies. A changed letter can make the cell make a protein that doesn’t enable the cell to fill in as it should. These proteins can influence cells to develop rapidly and cause damage to the neighboring cells. By concentrating on the cancer genome, researchers can find what letter changes are making a cell turn into a disease. Understanding the malignancy genome may likewise enable a researcher to choose the best treatment for every patient.This session discusses many such changes in the genome that are eventually leading to cancer formation.