People with a gene variant that puts them at high risk for Alzheimer’s disease are protected from its debilitating effects if they also carry a variant of a completely different gene, Stanford University School of Medicine investigators report in a large new study.
Their findings, to be published Apr. 13 in JAMA Neurology, suggest that a substantial fraction of the estimated 15% of Americans carrying the high-risk gene variant are protected to some degree from Alzheimer’s disease by a variant of the other gene. (A gene will often come in a variety of versions, or variants, that can produce different…
