Loss-of-function variants in ABCA7 confer risk of Alzheimer’s disease

We conducted a search for rare, functional variants altering susceptibility to Alzheimer’s disease that exploited knowledge of common variants associated with the same disease. We found that loss-of-function variants in ABCA7 confer risk of Alzheimer’s disease in Icelanders (odds ratio (OR) = 2. 2, P = 2.2× 10- 3) and discovered that the association replicated in study groups from Europe and the United States (combined OR = 2.03, P = 6.8×10-5).