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Alzheimer's disease drug shelved after trial failure
Two US drug firms say they will stop development of an Alzheimer's drug because it failed in two late-stage clinical trials.
Bapineuzumab, made by Pfizer and Johnson & Johnson, was designed to halt build-up of plaque in the brain.
But it failed to improve cognitive or functional performance compared with a placebo in certain patients.
http://www.bbc.co.uk/news/world-us-canada-19159167
