Professor Gilles Guillemin has been working in the fields of neuroimmunology and tryptophan metabolism for more than 20 years. He is the co-founder of the MND and Neurodegenerative Diseases Research Centre, the co-founder of the Macquarie University MND Biobank, and the head of the Neuroinflammation group at Macquarie University. Prof Guillemin’s team is one of the world’s leading research groups working on the involvement of tryptophan catabolism (via the kynurenine pathway) in human neurodegenerative diseases. He has demonstrated the roles of this pathway in multiple sclerosis, Alzheimer's disease, amyotrophic lateral sclerosis, and suicide. He is the president of the International Society for Tryptophan Research and editor-in-chief of the International Journal for Tryptophan Research. He has published more than 250 peer-reviewed scientific articles. His current h-index is 66 and he has more than 15,000 citations.