The results showed that the mRNA levels of both RPL3L and SDHA significantly correlated with the infiltration scores of five (CD4-naive T cell, CD8-naive T cell, cytotoxic T cell, gamma delta T cell and CD8 T cell) out of the seven immune cell types that were different between DCM and normal heart, while no correlation was observed for MYL4. This evidence concerns the gene RPL3L and familial dilated cardiomyopathy.