Persistent neurogenesis, which is shown by the presence of Nestin+/Sox2+/Ki67+ neural progenitors, DCX+/PCNA+ neuroblasts, and DCX+ immature neurons, was also reported in older adults and to a lesser extent, in Alzheimer disease patients (Tobin et al., 2019). The gene discussed is DCX; the disease is early-onset autosomal dominant Alzheimer disease.