Marta Vaz Batista, MD, Hospital Professor Doutor Fernando Fonseca, Amadora, Portugal, discusses the current standard of care for patients with breast cancer who develop brain metastases, which is a growing problem, especially in patients with triple negative or HER2-positive disease. Dr Vaz Batista also discusses how current research is building on research done on brain metastases in lung cancer, and what future research directions may be. This interview took place at the San Antonio Breast Cancer Symposium 2021 in San Antonio.