Under standard conditions, the proportion of IFN-γ-positive Th0 cells was nearly two-fold in PD patients in comparison to HS (on average, + 85% in PD-dn and + 87% in PD-dt patients), while there was no difference in either IL-4- or IL17A-positive cells (Fig. 4). The gene discussed is IL4; the disease is Parkinson disease.