He is former Director of the Malaghan Institute of Medical Research in Wellington, New Zealand and led its allergic and parasitic diseases programme.
In January 2025 he stepped down from the role of director and was appointed Deputy Chair of the Malaghan Insitute's trust board[1].
[2] After completing a PhD in 1987 under Jim Watson at the University of Auckland, titled Role of interleukin 2 and interleukin 3 in haemopoiesis,[3] Le Gros undertook a three-year Fogarty Fellowship at the National Institutes of Health in Washington DC before working for Ciba-Geigy in Switzerland.
[9] In 2005, Le Gros was elected a Fellow of the Royal Society of New Zealand in recognition of his research contributions to the fields of immunology and asthma.
Le Gros was awarded an Honorary Fellowship from the Royal College of Pathologists of Australasia in 2014 and the same year was made a Companion of the New Zealand Order of Merit[12] in the Queen's Birthday Honours.