GPC1 and familial pancreatic carcinoma: The GPC1 Exo‐mRNA/tMV‐mProtein expression demonstrated some differentiation between IPMN and the control group, with an AUC/ROC of 0.808 (Figure 4L), likely due to the presence of pancreatic cancer precursor lesions in some IPMN patients.[24] Conversely, a few BPD cases exhibited slightly elevated GPC1 Exo‐mRNA or tMV‐mProtein expression, yielding an AUC/ROC of 0.652 compared to the control group (Figure 4L).