TNF and Parkinson disease: Expression of many of the genes involved in a number of innate immune signaling pathways (in particular, in the canonical NFκB, non-canonical NFκB, the TNFα/NFκB, IL6/STAT3, IL2/STAT5 pathways, as well as the IFNγ and IFNα response) in cells from PD patients was found to be reduced compared to that in the cells from healthy donors.