However, our list of SDEGs in all three Parkinson's disease datasets used in this study did not include all of the OMIM PD-related genes, missing such genes like LRRK2, PARK2, PARK7, PLA2G6, PINK1 and UCHL1, while PINK1 and UCHL1 were still both significantly expressed in medial Substantia nigra, and UCHL1 also in lateral Substantia nigra, but not in all three brain tissue types. The gene discussed is PLA2G6; the disease is Parkinson disease.