The Integrative Genomics Viewer (IGV) is a powerful, open-source tool designed for visualizing vast amounts of genomic data. Developed by the Broad Institute, IGV allows researchers and clinicians to explore complex datasets, including sequence alignments, mutations, copy number variations, and gene expression profiles. In the context of cancer research, IGV plays a crucial role in helping scientists understand the genomic alterations that drive cancer progression and tailor personalized therapeutic strategies.