CD8A and myocarditis: Moreover, except the cases with active myocarditis (patients 1 and 2), giant cell myocarditis (patients 3 and 14), and one case of DCMi (patient 9), CD4+-T-cell-to-CD8+-T-cell ratio was ≥1, suggesting a predominantly autoimmunological origin of the observed inflammation (Figure 3, Table 2).