Time-to-event curves after dividing the cohort corresponding to threshold determined in ROC analysis. (A) Patients with H3Cit-DNA plasma >219.3 μg/L (blue line) showed increased mortality compared with patients with plasma H3Cit-DNA <219.3 μg/L (red line). (B) Patients with H3Cit-DNA plasma >219.3 μg/L did also show an increased risk of MACE within 1 year after STEMI. (C-D) No difference was observed between the groups regarding reinfarction (C) and rehospitalization (D) due to heart failure. Numbers under y-axis indicate patients at risk against the days listed on x-axis.