CD8A and arrhythmogenic right ventricular cardiomyopathy: Spearman’s correlation analysis indicated that ARVC phenotype was significantly and positively correlated with the scores of type 2 T helper cell (Th2), type 1 T helper cell (Th1), regulatory T cell (Treg), plasmacytoid dendritic cell (PDC), neutrophil, mast cell, central memory CD4 T (TCM) cell, macrophage, CD56dim natural killer (NK) cell, myeloid-derived suppressor cell (MDSC), memory B cell (MBC), natural killer T (NKT) cell, and activated CD8 T cell (Figure 4B).