To further explore the mechanisms of APOBEC1/3A/3G/3H in the occurrence and development of PAAD, we first obtained 400 coexpressed genes (Supplementary Material S1) of APOBEC1/3A/3G/3H in pancreatic adenocarcinoma from the LinkedOmics database and generated the volcano map (Figure 5A). This evidence concerns the gene APOBEC1 and pancreatic adenocarcinoma.