IL2 and Parkinson disease: In the CNS, the expression of IFNα, IL-2, and IL-12 is linked to experimental autoimmune encephalitis (EAE), multiple sclerosis (MS), Alzheimer’s disease (AD), and Parkinson’s disease (PD) (59, 84, 87, 117, 118, 120, –, 122) through amplified Th1 responses (51, 52, 55, 56, 87, 123).