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The genes involved in the metabolic pathways of amyloid-β (Aβ) and tau proteins significantly influence the etiology of Alzheimer’s disease (AD). Various studies have explored the associations between some of these genes and AD in the Caucasian population; however, researches regarding these associations remain limited in the Chinese population. To systematically evaluate the associations of these genes with AD, we investigated 19 genes involved in the metabolism of Aβ and tau based on previous studies selected using the PubMed database. This study included 372 patients with sporadic late-onset AD (sLOAD) and 345 cognitively healthy individuals from southern China. The results were replicated in the International Genomics of Alzheimer’s Project (IGAP). Protein–protein interactions were determined using the STRING v11 database. We found that a single-nucleotide polymorphism, rs11682128, of  BIN1  conferred susceptibility to sLOAD after adjusting for age, sex, and  APOE  ε4 status and performing the Bonferroni correction {corrected  P  = 0.000153, odds ratio (OR) [95% confidence interval (CI)] = 1.403 (1.079–1.824)}, which was replicated in the IGAP. Protein–protein interactions indicated that BIN1 was correlated with MAPT. Moreover, rare variants of  NEP  and  FERMT2  (0.0026 < corrected  P  < 0.05), and the Aβ degradation, tau pathology, and tau phosphatase pathways (0.01 < corrected  P  < 0.05), were nominally significantly associated with sLOAD. This study suggested that the genes involved in the metabolic pathways of Aβ and tau contributed to the etiology of sLOAD in the southern Han Chinese population.

frontiers in aging neuroscience

Association of Genes Involved in the Metabolic Pathways of Amyloid-β and Tau Proteins With Sporadic Late-Onset Alzheimer’s Disease in the Southern Han Chinese Population