A nonlinear relationship between PNR and MACEs was found in the current study after adjusting for age, sex, anterior wall MI, MI history, apelin-12, apelin-12 change rate, LVEDD, peak cTnI, pathological Q wave, Killip classification grade, FBG, and albumin levels, GENSINI score, and eGFR (Figure 1). The gene discussed is TNNI3; the disease is myocardial infarction.