GHI is the first private research institute fully focussed on clinical and preclinical research in HD. GHI is actively involved in multiple international consortia and network activities in the HD community, including projects supported by the European Huntington Disease Network (EHDN), the Huntington Study Group (HSG), and the Movement Disorders Society (MDS). GHI has established one of the largest global cohorts of gene carriers (symptomatic and premanifest) for HD clinical research.