The molecular alterations most frequently associated with GIST are mutations in the KIT and PDGFRA genes. Many other genetic abnormalities have been described, such as amplification of C-MYC, MDM2, EGFR1 and CCND1. The objective of this study was to analyze by immunohistochemical method the prognostic value of C-MYC and EGFR overexpression in GIST. We retrospectively collected 25 cases of GIST diagnosed in our department over a period of 15 years...