The intersection of differentially expressed genes in AD, module genes in SCLC, and target genes of miR-375-3p yielded 14 common genes (Figure 3A): CDK5R1, SYP, ELAVL4, ASCL1, YAP1, UBE2E2, YWHAZ, AHR, NBEA, TBC1D9, SLC25A12, HSPH1, CHD7, and FKBP5. The gene discussed is TBC1D9; the disease is Alzheimer disease.