A key finding in the present study is the increase in expression of several proteins (NADH dehydrogenase flavoprotein 1, flavoprotein 2, flavoprotein 3, 1 α subcomplex subunit 5, 1 β subcomplex subunit 6, 1 β subcomplex subunit 7) associated with mitochondrial complex I in the RV of CAD patients. The gene discussed is NDUFV1; the disease is coronary artery disorder.