Alzheimer’s Drug Donanemab Helps Most When Taken Early in Disease
An experimental drug can slow progression of Alzheimer’s disease in those who start taking it when the disease is still in its early stages. The drug, a monoclonal antibody called donanemab, does not improve symptoms. But among people who started taking it at the earliest stages of Alzheimer’s, 47% had no disease progression on some measures after one year, compared with 29% who took a placebo.
The drug does not provide as much benefit to people at later stages or those with a common genetic variation that raises the…