Cynthia X. Ma, MD, PhD, Washington University in St. Louis, St. Louis, MO, talks on the FLEX real-world data platform (NCT03053193), an ongoing multicenter, prospective observational trial of a large, real-world dataset, combining whole genome expression with clinically annotated data, to accelerate research and discovery of subgroups in breast cancer. The goal of FLEX is to discover and develop novel genomic profiles that bring precision oncology to the clinic, and ultimately improve treatment and outcomes of patients with breast cancer. This interview took place at the San Antonio Breast Cancer Symposium 2021 in San Antonio.