Dr Butler completed his dual training in clinical and laboratory haematology in 2004 following a research posting at the Queensland Institute of Medical Research investigating the role of bcl-2 in primary resistance in chronic myeloid leukaemia. Following a fellowship year at the Bone Marrow Transplant Unit, RBWH, he has been a senior staff specialist with that unit. In addition, he has provided outreach clinic support to the Sunshine Coast region, and private clinics at South Brisbane, North Lakes, and Chermside. Dr Butler also completed a Masters in Medical Science (Clinical Epidemiology) to assist with development of investigator-initiator research studies. His major clinical interests are in all aspects of malignant haematology, particularly in leukaemia, myelodysplasia, lymphoma, and myeloma, as well as autologous and allogeneic stem cell transplantation. Dr Butler also undertakes other roles, including extensive educational support and clinical presentations for patients and health professionals, and advocacy roles as a board member for Lymphoma Australia.