Biotechnology In what has been rare positive news in the search for an effective treatment for Alzheimer’s disease, mid-stage data were released today showing that donanemab, an investigational antibody that targets a modified form of beta amyloid called N3pG, showed significant slowing of decline in a composite measure of cognition and daily function in patients with early symptomatic Alzheimer's disease compared to placebo in the Phase II TRAILBLAZER-ALZ study. 11 January 2021