Sorry! You must be logged in to read this post. Please sign up for your FREE MY-DSC account here. Login Tags:agingalzheimer'sAlzheimer's Diseaseamyloid peptidesAPOEapolipoprotein EAPPblood biomarkersdementiaDown syndrome mental status examinationDS-ADDS-MSEearly-onset ADEOADGFAPglial fibrillary acidic proteinLIFE-DSRlongevitylongitudinal natural history studyneurofilament light chainNfLp-tauphosphorylated tau proteinplasma biomarkersplasma p-tau assayssevere impairment batterySIB