07/27/2026
“The findings provide some of the clearest human evidence to date that anti-amyloid therapies may limit the accumulation of tau and slow the brain changes that lead to memory loss and cognitive decline,” says co-senior author David Wolk, MD, co-director of the IOA and Penn Memory Center, and director of the Penn Alzheimer’s Disease Research Center.
A rare look inside the human brain is offering new answers on Alzheimer’s disease.
In a ground-breaking study published in JAMA, Penn Medicine researchers analyzed the brain of a deceased clinical trial participant to see how clearing amyloid plaques impacts disease progression.
The findings were stark: areas where therapy successfully cleared amyloid had minimal damage and tau tangles, while neighboring regions with leftover amyloid showed significant inflammation and neurodegeneration.
This side-by-side evidence suggests that early, widespread amyloid clearance may help stop tau accumulation—offering a crucial blueprint for slowing memory loss and cognitive decline.