Healthy people will take an experimental Alzheimer’s drug.

Participants feel fine but accept an unproven drug’s risks on a prediction.

Blood tests measuring p-tau217 predict decline decades early, turning risk into a measurable biomarker.

The phase III PrevenTRON trial will run four to six years.

How each outlet framed it
The Guardian
foregrounds p-tau217 biomarker's 78% predictive accuracy over 10 years and phase III PrevenTRON trial mechanism

Sources: The Guardian