Currently, diabetes management goes beyond glycated hemoglobin (HbA1C) test because it does not take into account fluctuations in blood glucose levels known as glycemic variability (GV) which has been shown to have deleterious effects associated with endothelial dysfunction, characterized by increased expression of adhesion (ICAM-1, VCAM-1) and proinflammatory molecules (IL-8, NF-κB) [153,154,159]. The gene discussed is NFKB1; the disease is endothelial dysfunction.