APOE4 increases the risk for developing AD by 2.5-4-fold in heterozygous and 12-15-fold in homozygous carriers (Corder et al., 1993; Grupe et al., 2007; Corneveaux et al., 2010), however the risk is affected by factors such as sex or population ancestry (Belloy et al., 2023). This evidence concerns the gene APOE and Alzheimer disease.