Further, to verify the correlation between telomere length and FOXC1/FOXC2, we performed TelC Q-FISH and immunohistochemistry staining on patient heart tissue chips consist of DCM (dilated cardiomyopathy), ICM (ischemic cardiomyopathy) and CHD (coronary atherosclerotic heart disease) biopsies (Figure 5D and F). Here, FOXC2 is linked to ischemic cardiomyopathy.