Association of platelet-derived growth factor receptor alpha mutations with gastric primary site and epithelioid or mixed cell morphology in gastrointestinal stromal tumors.

Abstract excerpt

Most gastrointestinal stromal tumors (GISTs) carry activating mutations of the KIT gene encoding the receptor tyrosine kinase KIT. In a previous study we were able to show an association between the lack of KIT mutations (wild-type GISTs) and the presence of a significant epithelioid tumor component. A very recent study described the occurrence of PDGFRalpha mutations in KIT wt GISTS. Therefore, we studied a...

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