Dr. Matsui attended medical school at the University of California, San Francisco. He completed his internship and residency in internal medicine at the University of Washington in Seattle and fellowship training in medical oncology at Johns Hopkins. Dr. Matsui’s current research is focused on normal and cancer stem cell biology. Clinically, Dr. Matsui specializes in caring for adults with hematologic malignancies and in bone marrow transplantation. In addition to his work on stem cell biology, his lab also focuses on translational research and the development of novel therapies that target cancer stem cells in hematologic malignancies.