GCNT4 and Alzheimer disease: GSEA outcomes indicated that GALNT12 was primarily associated with glycan biosynthesis and propanoate metabolism, among other things (Figures 6A); GCNT4 was primarily associated with the functions of focal adhesion and Alzheimer’s disease (AD) (Figures 6B); and NPL was linked to with the pathway regulation of T cell receptor, chemokine signaling pathway, and other pathways (Figures 6C).