In the Pipeline
A roundup of current drug trials for Alzheimer’s disease.
At least 160 Alzheimer’s disease drug trials are currently under way, according to the National Institutes of Health, which tracks all federally funded clinical research and some privately supported trials. Here is a sampling of trials in Phases II and III.
DRUG |
CURRENT USE |
WHY IT MIGHT WORK |
AC-1202 |
Developed specifically for Alzheimer’s disease |
The brains of people with Alzheimer’s cannot effectively metabolize glucose, a primary energy source. AC-1202 is being tested as an alternative energy source that will preserve glucose-starved brain cells required for memory tasks and cognition and restore their function. |
| TH9507 (growth-hormone-releasing hormone [GHRH]) | To treat short stature in children |
GHRH has been found to decline with age; its decrease may be linked to cognitive decline in both normal aging and Alzheimer’s. Preliminary research shows that GHRH improves cognitive function in healthy men and women and also those diagnosed with mild cognitive impairment. |
| DHA (docosahexaenoic acid) | None | People who frequently eat fish high in omega-3 fatty acids have a lower risk of Alzheimer’s. DHA, the most abundant of such acids in the brain, might have antiamyloid, antioxidant or other neuroprotective properties that slow the disease’s progress. |
| Vitamin E, selenium | Nutritional supplements |
Healthy men who are enrolled in a cancer prevention trial examining whether selenium and vitamin E can prevent prostate cancer are also being evaluated for their risk of developing Alzheimer’s. Researchers hypothesize that taking the supplements can protect neurons from damage caused by increased oxidative stress, which is linked to dementia. |
| Evista (raloxifene) | To treat and prevent osteoporosis |
This study is following postmenopausal women who have mild to moderate dementia. Selective-estrogen-receptor modulator Evista has been found in animal studies to protect neurons from oxidative stress and the ill effects of beta-amyloid. |
Not Fade Away
As the population ages and Alzheimer’s disease proliferates, millions of minds are being lost. A spate of new drugs could stem the damage.
A Window on the Alzheimer’s Brain
A special dye called Pittsburgh compound B reveals damage on PET scans.
E-mail the Editor to comment on a story—or offer suggestions for future topics.



