These results are crucial for the Danish group, which sees Alzheimer's disease as a major potential market for GLP-1-based treatments like semaglutide, following the commercial success in managing diabetes and obesity. To date, therapeutic options for patients with Alzheimer's remain limited.

The drug tested, Rybelsus, is a tablet version currently approved only for the treatment of type 2 diabetes. It shares the same active ingredient, semaglutide, as Novo Nordisk's blockbusters Ozempic and Wegovy.

The stock fell 10% to 275 DKK on this announcement.