The CETP I405V polymorphism is associated with an increased risk of Alzheimer's disease.
Yu L, Shulman JM, Chibnik L, Leurgans S, Schneider JA, De Jager PL, Bennett DA. The CETP I405V polymorphism is associated with an increased risk of Alzheimer's disease. Aging Cell. 2012 Apr; 11(2):228-33.