Apart from other Olink studies, many CSF proteins determined through our experiments have been previously reported in other proteomics studies of AD (e.g., NEFL, MMP-10, TREM2, EIF4EBP1, GFAP, SMOC1, SMOC2, MAPT, FABP3, CHI3L1, EZR) [8,11,26,42]. Here, CHI3L1 is linked to Alzheimer disease.