Over the past decade, CDK4/6 inhibitors have transformed the treatment landscape for HR+ breast cancer, but resistance remains a key clinical challenge. Hear from Dr. Seth Wander as he explores the latest translational insights into resistance mechanisms, including genomic alterations affecting cell cycle and signal transduction pathways, and discusses evolving therapeutic strategies. Dr. Wander is an Assistant Professor of Medicine at Harvard Medical School and the Director of Precision Medicine at the Termeer Center for Targeted Therapies at Mass General Brigham Cancer Institute. He also spoke about this topic at the 2025 San Antonio Breast Cancer Symposium.