dendritic.cells, T.follicular.helper.cells, CD56dim.natural.killer.cells, and Monocyte were higher in Parkinson’s disease FRHGcluster A than in FRHGcluster B. While Parkinson’s disease FRHGcluster A had higher proportions of Activated.CD4.T.cells, Activated.CD8.T.cells, Immature. Here, CD8A is linked to Parkinson disease.