RAB7A and myocardial infarction: Echocardiographic assay revealed that cardiomyocyte RAB7 deletion exacerbated cardiac dysfunction in the mice under MI as indicated by further reduced left ventricular ejection fraction (LVEF) and fractional shortening (LVFS) (Figure 2A-C), alongside decreased anterior wall thickness (LVAW;s and LVAW;d) (Figure 2D-E), and elevated ventricular diameters (Figure S3 & Table S2).