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| Profile Name | KIT V559_E561del KIT T670I |
| Gene Variant Detail | |
| Relevant Treatment Approaches |
| Molecular Profile | Indication/Tumor Type | Response Type | Relevant Treatment Approaches | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|---|
| KIT V559_E561del KIT T670I | gastrointestinal stromal tumor | predicted - resistant | Ripretinib | Case Reports/Case Series | Actionable | In a retrospective study, a patient with a gastrointestinal stromal tumor harboring KIT V559_E561del and KIT D820Y progressed on third-line treatment with Qinlock (ripretinib) after 2.5 months and was found to have lost KIT D820Y but acquired KIT T670I in the metastatic lesion (PMID: 38408285). | 38408285 |