I am a Visiting Scientist in the Garvan Institute of Medical Research where my research centres on the molecular evolution of human cancers, and a Conjoint Professor of the UNSW Clinical School, St Vincent's Hospital.

In my clinical work, since 2018 I have been the Medical Director and Department Chair of Oncology, New Hope Cancer Centre, Beijing United Hospital, China.  We have a close working relationship with Peking University Cancer Hospital, and are GCP-accredited for recruiting patient to clinical trials. 

Before returning in 2009 to Sydney, where I helped to set up The Kinghorn Cancer Centre, I had helped to set up major new Cancer Centres in Singapore and The University of Hong Kong.

In 1996 I patented the invention of phosphorylation-state-specific antibodies, which invention has since earned approximately US$20m royalties for Harvard University and Dana-Farber Cancer Institute, and led to development of a number of successful diagnostic reagent companies.