The cBio Cancer Genomics Portal provides visualization and analysis for working with data from TCGA and other data sets and provides download of large-scale cancer genomics data sets. You can query this user-friendly portals maintained by the Computational Biology Center at Memorial Sloan-Kettering Cancer Center by entering the name of one or more genes. The output is a list of cancer studies of different tumor types; click on a study, and then on View Cancer Study Details, to call up a graphic—referred to as an “oncoprint”—that represents the frequency of genomic alterations. Registration not required.