CARNS1 and Alzheimer disease: Functional enrichment analysis showed that the complex interaction network of protein products of downregulated BCAS1, MOBP, MBP, and CARNS1 genes in the EC of female AD patients compared to female controls was mainly involved in biological processes related to carnosine metabolic process, histidine catabolic process, positive regulation of myelination, CNS myelination, positive regulation of gliogenesis, glial cell differentiation, and axon development (Appendix G) [53,54].