Also when stratifying the material into two patient groups with LO PD (n = 8) or EO PD (n = 7) expression levels were similar in all three groups (p = 0.695) (Figure 1(b), supplementary table 4). NRF2 mRNA levels in these individuals were quite variable, displaying a few higher expressing individuals in all groups. The gene discussed is NFE2L2; the disease is Parkinson disease.