- President of the Hong Kong Lung Cancer Study Group, the President of Hong Kong Precision Oncology Society
- Co-founder of the Hong Kong Neuro-oncology Society
- Head and Consultant Clinical Oncologist in Hong Kong Adventist Hospital Oncology Centre
- Former Chairman of the Research Committee of Queen Elizabeth Hospital
- Former Coordinator of Research and Ethics Committee in Kowloon Central Cluster hospitals of Hospital Authority
- Member of the Steering Committee of Genomic Medicine of the Hong Kong Government
- Honorary professor in the Department of Clinical Oncology of University of Hong Kong
- Dr Au is the Head and Consultant Clinical Oncologist in Hong Kong Adventist Hospital Oncology Centre. He has special interest in the clinical management of lung, hepatobiliary, head and neck, gastrointestinal and breast cancers. He has been the principal investigator of many clinical trials involving new drugs and translational research
