Fu Z, et al. - In patients > 80 years old with acute myocardial infarction (AMI), authors assessed the prognostic value of the combination of cystatin C (Cys C) and homocysteine (Hcy) at forecasting adverse events. As per data, for long-term all-cause death and MACE in very old AMI patients, Cys C was found to be a strong independent predictor. The predictive accuracy was further improved by the combined use of Cys C and homocysteine (Hcy). Compared to the long-term survival and event-free survival rates of unstable angina pectoris patients, the long-term survival and event-free survival rates of AMI patients were significantly lower. These demonstrated a significant difference according to the tertile concentration of Cys C of AMI patients.