Developmental Basis of Cardiac Inherited Diseases470Extracardiac endothelium patterns embryonic coronary arterio-venous connections471DCM-associated RBM20-mutations lead to aberrant splicing of titin and ryanodin receptor 2 in the human myocardium472The impact of missense versus nonsense mutations in arrhythmogenic cardiomyopathy phenotype

# 470 null null Extracardiac endothelium patterns embryonic coronary arterio-venous connections {#article-title-2} Recent reports suggest that mammalian embryonic coronary endothelium (CoE) develops from the sinus venosus and ventricular endocardium. Although several studies in non-mammalian vertebrates have proven that extracardiac endothelial cells also participate in CoE development, the contribution of such cells to mammalian CoE is...