Justin M. O’Sullivan, PhD, is a Professor and Director of the Liggins Institute at the University of Auckland in New Zealand. He has honorary appointments at the Garvan Institute of Medical Research, Australia, University of Southampton, UK, and A*STAR Singapore Institute for Clinical Sciences. Justin’s research group is currently focused on: establishing rapid genome sequencing for clinical care; understanding how disease-associated mutations in non-coding DNA affect gene regulatory networks and the pathways that underlie disease development; the role of the microbiome in brain and behaviour development; and the role of microbiome restoration in clinical care.