Patients with FTD who had a severe disease status had a higher level of the proinflammatory factors IL-17A (532.27 ± 303.87 vs. 821.53 ± 441.92 vs. 2277.41 ± 3518.86, p = 0.0324) and IL-2 (124.38 ± 40.37 vs. 121.60 ± 44.52 vs. 499.43 ± 827.64, p = 0.0340). The gene discussed is IL17A; the disease is frontotemporal dementia.