He also has secondary appointments in the Sidney Kimmel Comprehensive Cancer Center and Department of Oncology. He received his BS from Haverford College, his PhD from California Institute of Technology, and his postdoctoral training from the University of California San Francisco. Dr. Ewalds research interests include cellular mechanisms and molecular regulation of epithelial morphogenesis in development and cancer. His studies show how cells build organs and how these same cellular processes can contribute to breast cancer metastasis. Dr. Ewald’s research lab identified a unique class of breast cancer cells that lead the process of invasion into surrounding tissues—a first step in cancer metastasis.