The occurrence of ISR in AMI patients after PCI was taken as the dependent variable (“1” = ISR group, “0” = no ISR group), and the variables with statistically significant differences in Tables 1 and 2 were taken as covariates (diabetes and smoking history were classified variables, “1” = yes, “0” = no; stent length, hs‐CRP, SFRP5, ApoA‐I, HDL3‐C were continuous variables) for logistic regression analysis. Here, APOA1 is linked to diabetes mellitus.