Association between ApoE ε4 genotype and attentional function in non-demented, middle-aged, and older adults from rural India.

Although ApoE ε4 alone was not associated, it interacted with age, gender, and education to affect attention function in this rural Indian population. Longitudinal cognitive monitoring will yield insights into understanding whether the ApoE ε4 genotype influences the rate of cognitive decline in this rural, aging population.