Study finds gene that may raise Alzheimer’s risk in blacks

By Julie Steenhuysen CHICAGO (Reuters) – The largest study to date looking for genetic causes of Alzheimer’s in African Americans may offer new clues about why blacks in the United States are twice as likely as whites to develop the deadly, brain-wasting disease. The findings, published in the Journal of the American Medical Association on Tuesday, show that mutations in two genes that play a role in whites also contribute to Alzheimer’s risk in blacks. One of those, known as ABCA7, may double the risk in blacks who have the mutation versus those who don’t. …