Investigators at Washington University School of Medicine in St. Louis have identified a genetic variation associated with an earlier age of onset in Alzheimer's disease. Unlike genetic mutations previously linked to rare, inherited forms of early-onset Alzheimer's disease — which can strike people as young as their 30s or 40s — these variants influence an earlier presentation of symptoms in people affected by the more common, late-onset form of the disease. "We focused on this gene for two reasons: First, it codes for the tau protein that we find in neurofibrillary tangles, and secondly, some studies in the scientific literature show an association between the gene and Alzheimer's disease, while others do not," says principal investigator Alison M. Goate |
