A significantly higher astrocytic load (GFAP-positive) was observed in pure AD cases than in mixed DLB + AD in the CA1, CA2, CA3, CA4 and subiculum (p < 0.001, p = 0.003, p = 0.01, p = 0.042, p = 0.006 respectively) and in pure DLB in the CA1 (p = 0.014). The gene discussed is GFAP; the disease is Lewy body dementia.