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Profile Name | KIT N655K |
Gene Variant Detail | |
Relevant Treatment Approaches | KIT Inhibitor |
Molecular Profile | Indication/Tumor Type | Response Type | Relevant Treatment Approaches | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|---|
KIT N655K | Advanced Solid Tumor | predicted - sensitive | KIT Inhibitor | Imatinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing KIT N655K demonstrated some sensitivity to Gleevec (imatinib) treatment in culture, resulting in reduced cell viability at high treatment dosages (PMID: 33212994). | 33212994 |
KIT N655K | Advanced Solid Tumor | decreased response | KIT Inhibitor | Sunitinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing KIT N655K demonstrated a reduced response to Sutent (sunitinib) treatment compared to cells expressing KIT T670I in culture (PMID: 33212994). | 33212994 |
KIT N655K | Advanced Solid Tumor | decreased response | KIT Inhibitor | Regorafenib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing KIT N655K demonstrated a reduced response to Stivarga (regorafenib) treatment compared to cells expressing KIT T670I in culture (PMID: 33212994). | 33212994 |
KIT N655K | Advanced Solid Tumor | decreased response | KIT Inhibitor | Cabozantinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing KIT N655K demonstrated a reduced response to Cometriq (Cabometyx, cabozantinib) treatment compared to cells expressing KIT T670I in culture (PMID: 33212994). | 33212994 |
KIT N655K | Advanced Solid Tumor | predicted - sensitive | KIT Inhibitor | Avapritinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing KIT N655K demonstrated some sensitivity to Ayvakit (avapritinib) in culture, but were less sensitive than cells expressing KIT W557_K558del (PMID: 33212994). | 33212994 |
KIT N655K | Advanced Solid Tumor | predicted - sensitive | KIT Inhibitor | Ripretinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing KIT N655K demonstrated some sensitivity to Qinlock (ripretinib) treatment in culture, but were less sensitive than cells expressing KIT W557_K558del (PMID: 33212994). | 33212994 |
KIT N655K | gastrointestinal stromal tumor | predicted - sensitive | KIT Inhibitor | Imatinib | Case Reports/Case Series | Actionable | In a clinical case study, a patient with gastrointestinal stromal tumor (GIST) harboring a germline KIT N655K mutation, associated with hereditary GIST syndrome, demonstrated slow disease progression for 12 months while on treatment with Gleevec (imatinib) at 400mg/d, and upon disease progression following surgery and 15 months of Sutent (sunitinib) treatment, was rechallenged with Gleevec (imatinib) at 800mg/d and remained stable for a further 9 months (PMID: 33212994). | 33212994 |