IL2 and Tremor: Scores for the presence of dementia and resting tremor (Table 1) within the first year of diagnosis correlated with Luminex measurements of IL-2 protein levels (Spearman’s rho(ρ) = −0.881, p < 0.001, and ρ = 0.798, p = 0.006, respectively; Supplementary Fig. S3), with dementia scores showing a negative correlation whereas tremor scores showed a positive correlation.