Associate Professor Hao-Wen Sim is a medical oncologist based in Sydney, Australia specialising in neuro-oncology. He is affiliated with The Kinghorn Cancer Centre, Chris O'Brien Lifehouse, NHMRC Clinical Trials Centre and Garvan Institute of Medical Research. His work focuses on improving treatment approaches and clinical trial methodology for brain cancers. He completed a neuro-oncology fellowship at The Princess Margaret Cancer Centre, Toronto and holds a Master of Biostatistics from The University of Sydney, receiving the Biostatistics Collaboration of Australia Star Graduate Award, the Judy Simpson Biostatistics Scholarship, the Les Irwig General Epidemiology Award and the Australasian Epidemiological Association Top Student Prize. He serves as Clinical Lead for the Cooperative Trials Group for Neuro-Oncology (COGNO), Deputy Chair of the COGNO Scientific Advisory Committee, and chairs the Neuro-Oncology Multidisciplinary Team Meeting at The Kinghorn Cancer Centre.