These new results can be relevant for schizophrenia, Parkinson’s disease and Alzheimer’s disease, as they provide a correlation between diminished BDNF-TrkB signaling and the observed declines in GluR1 and SAP97 proteins in these diseases [18]–[20], [56]–[58]. This evidence concerns the gene DLG1 and early-onset autosomal dominant Alzheimer disease.