Based on proteomic data and their possible relationship with astrocytes in the disease, BAG3, HSP90AA1, HSP90AB1, HSPA4L, and FKBP4 were selected for further immunofluorescence and Western blot (WB) analyses to assess the relevance of heat shock proteins (HSPs) in AD [46]. The gene discussed is HSPA4L; the disease is Alzheimer disease.