[alzheimer*(Title/Abstract) OR dementia(Title/Abstract) AND AD(Title/Abstract)] AND [blood(Title/Abstract) OR plasma(Title/Abstract) OR serum(Title/Abstract)] AND [proteomic*(Title/Abstract) OR proteome(Title/Abstract) OR protein(Title/Abstract) OR proteins(Title/Abstract)] AND [biomarker*(Title/Abstract) OR marker*(Title/Abstract)] AND [beta-amyloid(Title/Abstract) OR amyloid beta(Title/Abstract) OR abeta(Title/Abstract) OR tau(Title/Abstract)]. Here, MAPT is linked to Alzheimer disease.