ST3GAL2 and early-onset autosomal dominant Alzheimer disease: Moreover, non-genetic derangement of glycosyltransferases was associated with Parkinson’s disease (reduced B3GALT4 and ST3GAL2, increased OGT, O-linked GlcNAc transferase), Huntington disease (reduced ST3GAL5, ST3GAL2, ST8SIA3, B4GALNT1), Alzheimer’s disease, and even amyotrophic lateral sclerosis (general ganglioside overexpression) [153,155].