Neutrophil elastase and TNF-α levels were significantly elevated in aneurysm walls covered by thick layers of ILT, while neutrophil gelatinase-associated lipocalin, myeloperoxidase, and neutrophil elastase were positively correlated, and their mediators may infiltrate the thick AAA compartment and weaken the AAA wall (84). The gene discussed is ELANE; the disease is aneurysm.