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Small study: Drug may help stabilize Alzheimer’s

  • ASSOCIATED PRESS
    This Sunday, July 8, 2012 photo shows Gammagard, a treatment that is being tested for Alzheimer's disease, at the home of a patient in New York. Three treatments, including Bapineuzumab and Solanezumab, being tested for the disease are antibodies - proteins made by the immune system that promote clearance of amyloid, the stuff that forms the plaque. (AP Photo/Seth Wenig)
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For the first time, researchers are reporting that a treatment might help stabilize Alzheimer’s disease for as much as three years, although the evidence is weak and in only four patients.

The drug is Gammagard, made by Baxter International Inc. Doctors say that four patients who have been receiving the highest dose for three years showed no decline on memory and cognition tests. A dozen others on different doses or shorter treatment times didn’t fare as well.

This study was far too small to prove the treatment works, but a more rigorous one involving 400 patients will give results within a year.

Still, the findings from the small study encouraged doctors at the Alzheimer’s Association International Conference in Vancouver, British Columbia, where they were presented on Tuesday.

“It’s tantalizing. If you were to pick out four people with Alzheimer’s disease, the likelihood that they would perform the same on standardized tests three years later is very, very tiny,” said William Thies, the association’s scientific director.

People typically go from diagnosis to death in about eight years, so to be stable for three years “is a long time,” he said. “We shouldn’t get euphoric and we shouldn’t get unreasonable enthusiasm, but this is a positive piece of data.”

The need for an effective treatment is huge: About 35 million people worldwide have dementia, and Alzheimer’s is the most common type. In the U.S., about 5 million have Alzheimer’s. Current medicines such as Aricept and Namenda just temporarily ease symptoms. There is no known cure.

Gammagard is intravenous immune globulin, or IVIG — multiple, natural antibodies culled from donated blood. Half a dozen companies already sell IVIG to treat immune system and blood disorders. These antibodies may help remove amyloid, the sticky plaque that clogs patients’ brains, sapping memory and ability to think.

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