PDK4 and familial dilated cardiomyopathy: The results showed that Pdk4 (AUC = 1.000 in merged data; 0.959 in GSE5606; 0.960 in GSE36875) and Lipe (AUC = 1.000 in merged data; 0.857 in GSE5606; 1.000 in GSE36875) have best diagnostic values for differentiating DCM from healthy control.