The protein expression level of hub genes in PDAC tissues and normal tissues was analyzed using immunohistochemical staining from Human Protein Atlas database. (A) Expression levels of APOL1 in pancreatic cancer. (B) Expression levels of COL6A3 in pancreatic cancer. (C) Expression levels of COL8A1 in pancreatic cancer. (D) Expression levels of COL12A1 in pancreatic cancer. (E) Expression levels of FN1 in pancreatic cancer. (F) Expression levels of MMP14 in pancreatic cancer. (G) Expression levels of POSTN in pancreatic cancer. (H) Expression levels of THBS2 in pancreatic cancer. (I) Expression levels of VCAN in pancreatic cancer.