Lillian L. Siu

Professor Siu is a senior medical oncologist at Princess Margaret Cancer Centre, and is a Professor of Medicine at the University of Toronto. She is the Director of the Phase I Trials Program, co-leads the Tumor Immunotherapy Program and holds the BMO Chair in Precision Genomics. Professor Siu had served on the Board of Directors of both the American Society of Clinical Oncology (ASCO) and the American Association for Cancer Research (AACR). She is a fellow of ASCO, AACR and the Canadian Academy of Health Sciences (CAHS). Professor Siu is the 2024-2025 President-Elect of the AACR, and the 2025-2026 President of AACR. Professor Siu’s major research focus is in the area of new anticancer drug development, with respect to phase I trials and head and neck malignancies. Her translational research focus is in the area of liquid biopsies. Internationally, Professor Siu was the recipient of the US National Cancer Institute’s Michaele C. Christian Award in 2010, European Society of Medical Onco