rs744373 SNP and alleles specifically associate to common diseases.

ε4 and are the two main genetic risk factors for sporadic Alzheimer's Disease (AD). Among several variants, the rs744373 is frequently associated with AD risk by contributing to tau pathology and poor cognitive performance. This study addressed the association of and rs744373 to specific characteristics in a Portuguese primary care-based study group, denoted pcb-Cohort. The study included 590 participants from five primary care health centers in the Aveiro district of Portugal. Individuals were evaluated and scored for cognitive and clinical characteristics, and blood samples were collected from the volunteers meeting the inclusion and exclusion criteria ( = 505). and genotypes were determined, and their association with cognitive characteristics and other diseases that might contribute to cognitive deficits, namely depression, hypertension, type 2 diabetes, dyslipidemia, osteoarticular diseases, gastrointestinal diseases, cardiovascular and respiratory diseases, was assessed. The diseases attributed to the study group were those previously diagnosed and confirmed by specialists. The results generated through multivariate analysis show that ε4 carriers significantly associated with poorer cognitive performance (OR = 2.527; = 0.031). Additionally, there was a significant risk of dyslipidemia for ε4 carriers (OR = 1.804; = 0.036), whereas rs744373 risk-allele carriers were at a significantly lower risk of having dyslipidemia (OR = 0.558; = 0.006). Correlations were evident for respiratory diseases in which ε4 showed a protective tendency (OR = 0.515; = 0.088), and had a significative protective profile (OR = 0.556; = 0.026). Not of statistical significance, ε2 showed a trend to protect against type 2 diabetes (OR = 0.342; = 0.093), in contrast rs744373 risk-allele carriers were more likely to exhibit the disease (OR = 1.491; = 0.099). The data here presented clearly show, for the first time, that the two top genetic risk factors for sporadic AD impact a similar group of common diseases, namely dyslipidemia, respiratory diseases, and type 2 diabetes.