Molecular Profile Detail

Profile Name KIT V559A
Gene Variant Detail

KIT V559A (gain of function)

Relevant Treatment Approaches KIT Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Relevant Treatment Approaches Therapy Name Approval Status Evidence Type Efficacy Evidence References
KIT V559A gastrointestinal stromal tumor predicted - resistant KIT Inhibitor Imatinib Case Reports/Case Series Actionable In a clinical study, KIT V559A was identified as a secondary mutation in a patient with gastrointestinal stromal tumor who developed resistance to Gleevec (imatinib) (PMID: 18488160). 18488160
KIT V559A melanoma sensitive KIT Inhibitor Nilotinib Case Reports/Case Series Actionable In a Phase II trial, Tasigna (nilotinib) resulted in an overall response rate of 26.2% (11/41), including a melanoma patient harboring KIT V559A demonstrating a partial response and progression-free survival of 19.4 months and overall survival of 32.9 months (PMID: 28327988). 28327988
KIT V559A melanoma predicted - sensitive KIT Inhibitor Imatinib Case Reports/Case Series Actionable In a clinical case study, Gleevec (imatinib) treatment in a patient with metastatic melanoma resulted in regression of the lung metastasis, which harbored KIT V559A; however, neither the primary tumor or lymph node metastasis responded, which had wild-type KIT (PMID: 19812602). 19812602
Clinical Trial Phase Therapies Title Recruitment Status