Year in review: Alzheimer’s drug may clarify disease’s origins

Treatment shows early promise in sweeping away amyloid brain plaques

amyloid-beta

PLAQUE BUSTER A new Alzheimer’s drug shows early promise in clearing amyloid-beta plaques (illustrated) from the brain.

Selvanegra/iStockphoto

A quarter century after scientists proposed an idea that profoundly influenced the arc of Alzheimer’s research, they might finally find out whether they are correct.