Clinical studies haveshown that the levels of chemokines in patients with myocarditis aresignificantly elevated, with levels being closely related to the severity of thedisease, inflammatory cell infiltration, and impaired cardiac function.Expression of the C-X-C motif chemokine ligand (CXCL)8 increases in patients withmyocarditis and can efficiently attract neutrophils to migrate to the site ofmyocardial injury [14, 20]. The gene discussed is CXCL8; the disease is myocarditis.