We then examined the relationship between IP-10 tertiles at admission and left ventricular systolic function improvement by calculating the change (Δ) in LV ejection fraction (LVEF), a predictor of heart failure (31–33), as determined by CMR imaging at 12 weeks minus the LVEF obtained 2-7 days after STEMI (ΔLVEF= LVEF at 12 weeks – LVEF at 2-7 days). The gene discussed is CXCL10; the disease is heart failure.