Significant disparities in the myocardial infiltration of activated CD4 T cell, activated dendritic cell, CD56dim natural killer cell, immature dendritic cell, MDSC, monocyte, natural killer T cell, neutrophil, and plasmacytoid dendritic cell between the DCM and CON groups (P < 0.05). The gene discussed is CD4; the disease is familial dilated cardiomyopathy.