PDGFA and cancer: According to the database, the immunohistochemical staining data were based on the proteins APP (normal: Staining is low, Quantity < 25%; cancer: Staining is medium, Quantity 25–75%), PDGFA (normal: Staining is medium, Quantity 25–75%; cancer: Staining is high, Quantity > 75%), SERPINA5 (normal: Staining is not detected, Quantity < 25%; cancer: Staining is low, Quantity 25–75%), and STC1 (normal: Staining is low, Quantity < 25%; cancer: Staining is medium, Quantity 25–75%).