This document summarizes a presentation on precision medicine in oncology from an informatics perspective. It discusses the goals of precision oncology to target cancer treatments based on a patient's individual tumor characteristics. Major initiatives are described, including the NCI-MATCH trial which assigns cancer therapies based on a tumor's molecular abnormalities. The presentation outlines efforts through the Precision Medicine Initiative to expand genomic cancer trials, understand and overcome resistance to therapies through additional tumor profiling and preclinical models, and establish an integrated national cancer database.