Georgios Deftereos MD
Professor of Pathology at the University of California, San Francisco, a specialist in cytopathology and molecular pathology, and long-time expert on molecular immunohistochemistry implementation and interpretation.
Dr. Deftereos is a Professor of pathology at the University of California, San Francisco, where he also serves as an Associate Director of the Clinical Cancer Genomics Laboratory and as the Director of Molecular Cytopathology. He received his MD from the University of Bari Aldo Moro in Italy. Prior to his pathology training, Dr. Deftereos completed a research fellowship focusing on HPV and gynecological malignancies at the University of Washington in Seattle, Washington. He then completed a residency in Anatomic and Clinical pathology at Allegheny General Hospital in Pittsburgh, Pennsylvania, followed by consecutive clinical fellowships in Cytopathology and molecular genetic pathology at the University of Washington. Dr. Deftereos provides service in the areas of cytopathology and molecular pathology. Among other commitments, Dr. Deftereos serves as a Member for the College of American Pathologists Molecular Oncology Committee. His research interests include epigenetics of solid tumors and minimally invasive precision diagnostics, with emphasis on the use of molecular testing in cytopathology of solid tumors. Dr. Deftereos has long-time experience in the implementation and interpretation of molecular diagnostic assays, but also immunohistochemistry biomarkers, including PD-L1.