Moreno Grau, SoniaRodríguez Gómez, OctavioSanabria, ÁngelaPérez Cordón, AlbaSánchez Ruiz, DomingoAbdelnour, CarlaValero, SergiHernández, IsabelRosende-Roca, MaitéeMauleón, AnaVargas, LilianaLafuente, AsunciónGil, SilviaSantos Santos, Miguel A.Alegret, MontserratEspinosa, AnaOrtega, GemmaGuitart, MarinaGailhajanet, AnnaRojas, Itziar deSotolongo Grau, ÓscarRuiz, SusanaAguilera, NuriaPapasey, JudithMartín, ElviraPeleja, EstherLomeña Caballero, Francisco JuanCampos, FranciscoVivas, AssumptaGómez Chiari, MartaTejero, Miguel ÁngelGiménez, JoanSerrano Ríos, ManuelOrellana, AdelinaTárraga, LluísRuiz, AgustínBoada, MercèAlzheimer's Disease Neuroimaging InitiativeFACEHBI study group2021-04-122021-04-122017-11-20https://hdl.handle.net/2445/176163Introduction: Subjective cognitive decline (SCD) has been proposed as a potential preclinical stage of Alzheimer's disease (AD). Nevertheless, the genetic and biomarker profiles of SCD individuals remain mostly unexplored. Methods: We evaluated apolipoprotein E (APOE) ε4's effect in the risk of presenting SCD, using the Fundacio ACE Healthy Brain Initiative (FACEHBI) SCD cohort and Spanish controls, and performed a meta-analysis addressing the same question. We assessed the relationship between APOE dosage and brain amyloid burden in the FACEHBI SCD and Alzheimer's Disease Neuroimaging Initiative cohorts. Results: Analysis of the FACEHBI cohort and the meta-analysis demonstrated SCD individuals presented higher allelic frequencies of APOE ε4 with respect to controls. APOE dosage explained 9% (FACEHBI cohort) and 11% (FACEHBI and Alzheimer's Disease Neuroimaging Initiative cohorts) of the variance of cerebral amyloid levels. Discussion: The FACEHBI sample presents APOE ε4 enrichment, suggesting that a pool of AD patients is nested in our sample. Cerebral amyloid levels are partially explained by the APOE allele dosage, suggesting that other genetic or epigenetic factors are involved in this AD endophenotype.10 p.application/pdfengcc by-nc-nd (c) Moreno Grau, 2017http://creativecommons.org/licenses/by-nc-nd/3.0/es/Malaltia d'AlzheimerMalalties del sistema nerviósAlzheimer's diseaseNervous system Diseasesinfo:eu-repo/semantics/article2021-04-09info:eu-repo/semantics/openAccess29156223