Oncogenomics is the study of cancer through the lens of genomics, focusing on the genetic mutations and alterations that drive tumor formation and progression. By analyzing the entire genome of cancer cells, researchers aim to identify oncogenes (genes that promote cancer when mutated or overexpressed) and tumor suppressor genes (genes that prevent cancer). This field plays a pivotal role in understanding cancer heterogeneity, enabling the development of targeted therapies, and advancing personalized medicine.