John Cassidy completed his PhD at the University of Cambridge, where his research focused on understanding and modelling the causes of tumour heterogeneity and how tumour evolution could impact clinical practice. In 2015, he founded CCG.ai to continue this mission and to apply advances in machine learning to the discovery of tumour biomarkers. In 2017, he was included on the prestigious Forbes 30 Under 30, and in 2020 was elected a fellow of the Royal Society of Biology. Dr. Cassidy sits on multiple advisory councils and boards both in the United Kingdom and internationally. He has published papers in journals such as Cell and Cancer Research and has helped raise more than £20m in grant funding for cancer research projects.